truffle: src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp annotate

annotate src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp @ 3927:f1b4e0e0bdad

7089625: G1: policy for how many old regions to add to the CSet (when young gen is fixed) is broken Summary: When refactoring the code for a previous fix, a condition was not correctly negated which prevents the G1 policy from adding the correct number of old regions to the CSet when the young gen size is fixed. The changeset also fixes a small syntactical issue in g1ErgoVerbose.hpp which is causing compiler warnings. Reviewed-by: brutisso, ysr

author	tonyp
date	Tue, 13 Sep 2011 12:40:14 -0400
parents	af2ab04e0038
children	d912b598c6c3

rev	line source
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1 /*
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 1991 diff changeset	2 * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	4 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	7 * published by the Free Software Foundation.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	8 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	13 * accompanied this code).
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	14 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1394 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1394 diff changeset	20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1394 diff changeset	21 * questions.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	22 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	23 */
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	24
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	25 #include "precompiled.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	26 #include "gc_implementation/g1/concurrentG1Refine.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	27 #include "gc_implementation/g1/concurrentMark.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	28 #include "gc_implementation/g1/concurrentMarkThread.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	29 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	30 #include "gc_implementation/g1/g1CollectorPolicy.hpp"
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	31 #include "gc_implementation/g1/g1ErgoVerbose.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	32 #include "gc_implementation/g1/heapRegionRemSet.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	33 #include "gc_implementation/shared/gcPolicyCounters.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	34 #include "runtime/arguments.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	35 #include "runtime/java.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	36 #include "runtime/mutexLocker.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	37 #include "utilities/debug.hpp"
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	38
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	39 #define PREDICTIONS_VERBOSE 0
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	40
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	41 // <NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	42
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	43 // Different defaults for different number of GC threads
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	44 // They were chosen by running GCOld and SPECjbb on debris with different
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	45 // numbers of GC threads and choosing them based on the results
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	46
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	47 // all the same
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	48 static double rs_length_diff_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	49 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	50 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	51
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	52 static double cost_per_card_ms_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	53 0.01, 0.005, 0.005, 0.003, 0.003, 0.002, 0.002, 0.0015
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	54 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	55
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	56 // all the same
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	57 static double fully_young_cards_per_entry_ratio_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	58 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	59 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	60
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	61 static double cost_per_entry_ms_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	62 0.015, 0.01, 0.01, 0.008, 0.008, 0.0055, 0.0055, 0.005
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	63 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	64
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	65 static double cost_per_byte_ms_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	66 0.00006, 0.00003, 0.00003, 0.000015, 0.000015, 0.00001, 0.00001, 0.000009
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	67 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	68
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	69 // these should be pretty consistent
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	70 static double constant_other_time_ms_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	71 5.0, 5.0, 5.0, 5.0, 5.0, 5.0, 5.0, 5.0
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	72 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	73
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	74
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	75 static double young_other_cost_per_region_ms_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	76 0.3, 0.2, 0.2, 0.15, 0.15, 0.12, 0.12, 0.1
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	77 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	78
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	79 static double non_young_other_cost_per_region_ms_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	80 1.0, 0.7, 0.7, 0.5, 0.5, 0.42, 0.42, 0.30
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	81 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	82
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	83 // </NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	84
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	85 // Help class for avoiding interleaved logging
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	86 class LineBuffer: public StackObj {
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	87
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	88 private:
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	89 static const int BUFFER_LEN = 1024;
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	90 static const int INDENT_CHARS = 3;
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	91 char _buffer[BUFFER_LEN];
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	92 int _indent_level;
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	93 int _cur;
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	94
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	95 void vappend(const char* format, va_list ap) {
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	96 int res = vsnprintf(&_buffer[_cur], BUFFER_LEN - _cur, format, ap);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	97 if (res != -1) {
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	98 _cur += res;
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	99 } else {
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	100 DEBUG_ONLY(warning("buffer too small in LineBuffer");)
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	101 _buffer[BUFFER_LEN -1] = 0;
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	102 _cur = BUFFER_LEN; // vsnprintf above should not add to _buffer if we are called again
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	103 }
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	104 }
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	105
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	106 public:
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	107 explicit LineBuffer(int indent_level): _indent_level(indent_level), _cur(0) {
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	108 for (; (_cur < BUFFER_LEN && _cur < (_indent_level * INDENT_CHARS)); _cur++) {
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	109 _buffer[_cur] = ' ';
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	110 }
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	111 }
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	112
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	113 #ifndef PRODUCT
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	114 ~LineBuffer() {
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	115 assert(_cur == _indent_level * INDENT_CHARS, "pending data in buffer - append_and_print_cr() not called?");
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	116 }
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	117 #endif
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	118
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	119 void append(const char* format, ...) {
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	120 va_list ap;
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	121 va_start(ap, format);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	122 vappend(format, ap);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	123 va_end(ap);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	124 }
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	125
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	126 void append_and_print_cr(const char* format, ...) {
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	127 va_list ap;
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	128 va_start(ap, format);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	129 vappend(format, ap);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	130 va_end(ap);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	131 gclog_or_tty->print_cr("%s", _buffer);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	132 _cur = _indent_level * INDENT_CHARS;
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	133 }
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	134 };
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	135
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	136 G1CollectorPolicy::G1CollectorPolicy() :
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	137 _parallel_gc_threads(G1CollectedHeap::use_parallel_gc_threads()
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	138 ? ParallelGCThreads : 1),
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	139
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	140 _n_pauses(0),
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	141 _recent_rs_scan_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	142 _recent_pause_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	143 _recent_rs_sizes(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	144 _recent_gc_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	145 _all_pause_times_ms(new NumberSeq()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	146 _stop_world_start(0.0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	147 _all_stop_world_times_ms(new NumberSeq()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	148 _all_yield_times_ms(new NumberSeq()),
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	149 _using_new_ratio_calculations(false),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	150
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	151 _all_mod_union_times_ms(new NumberSeq()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	152
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	153 _summary(new Summary()),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	154
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	155 #ifndef PRODUCT
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	156 _cur_clear_ct_time_ms(0.0),
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	157 _min_clear_cc_time_ms(-1.0),
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	158 _max_clear_cc_time_ms(-1.0),
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	159 _cur_clear_cc_time_ms(0.0),
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	160 _cum_clear_cc_time_ms(0.0),
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	161 _num_cc_clears(0L),
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	162 #endif
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	163
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	164 _region_num_young(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	165 _region_num_tenured(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	166 _prev_region_num_young(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	167 _prev_region_num_tenured(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	168
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	169 _aux_num(10),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	170 _all_aux_times_ms(new NumberSeq[_aux_num]),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	171 _cur_aux_start_times_ms(new double[_aux_num]),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	172 _cur_aux_times_ms(new double[_aux_num]),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	173 _cur_aux_times_set(new bool[_aux_num]),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	174
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	175 _concurrent_mark_remark_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	176 _concurrent_mark_cleanup_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	177
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	178 // <NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	179
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	180 _alloc_rate_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	181 _prev_collection_pause_end_ms(0.0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	182 _pending_card_diff_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	183 _rs_length_diff_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	184 _cost_per_card_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	185 _fully_young_cards_per_entry_ratio_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	186 _partially_young_cards_per_entry_ratio_seq(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	187 new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	188 _cost_per_entry_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	189 _partially_young_cost_per_entry_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	190 _cost_per_byte_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	191 _cost_per_byte_ms_during_cm_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	192 _constant_other_time_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	193 _young_other_cost_per_region_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	194 _non_young_other_cost_per_region_ms_seq(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	195 new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	196
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	197 _pending_cards_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	198 _scanned_cards_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	199 _rs_lengths_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	200
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	201 _pause_time_target_ms((double) MaxGCPauseMillis),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	202
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	203 // </NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	204
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	205 _full_young_gcs(true),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	206 _full_young_pause_num(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	207 _partial_young_pause_num(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	208
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	209 _during_marking(false),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	210 _in_marking_window(false),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	211 _in_marking_window_im(false),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	212
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	213 _known_garbage_ratio(0.0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	214 _known_garbage_bytes(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	215
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	216 _young_gc_eff_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	217
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	218 _recent_prev_end_times_for_all_gcs_sec(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	219
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	220 _recent_CS_bytes_used_before(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	221 _recent_CS_bytes_surviving(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	222
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	223 _recent_avg_pause_time_ratio(0.0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	224 _num_markings(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	225 _n_marks(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	226 _n_pauses_at_mark_end(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	227
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	228 _all_full_gc_times_ms(new NumberSeq()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	229
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	230 // G1PausesBtwnConcMark defaults to -1
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	231 // so the hack is to do the cast QQQ FIXME
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	232 _pauses_btwn_concurrent_mark((size_t)G1PausesBtwnConcMark),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	233 _n_marks_since_last_pause(0),
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	234 _initiate_conc_mark_if_possible(false),
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	235 _during_initial_mark_pause(false),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	236 _should_revert_to_full_young_gcs(false),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	237 _last_full_young_gc(false),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	238
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	239 _eden_bytes_before_gc(0),
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	240 _survivor_bytes_before_gc(0),
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	241 _capacity_before_gc(0),
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	242
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	243 _prev_collection_pause_used_at_end_bytes(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	244
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	245 _collection_set(NULL),
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	246 _collection_set_size(0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	247 _collection_set_bytes_used_before(0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	248
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	249 // Incremental CSet attributes
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	250 _inc_cset_build_state(Inactive),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	251 _inc_cset_head(NULL),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	252 _inc_cset_tail(NULL),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	253 _inc_cset_size(0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	254 _inc_cset_young_index(0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	255 _inc_cset_bytes_used_before(0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	256 _inc_cset_max_finger(NULL),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	257 _inc_cset_recorded_young_bytes(0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	258 _inc_cset_recorded_rs_lengths(0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	259 _inc_cset_predicted_elapsed_time_ms(0.0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	260 _inc_cset_predicted_bytes_to_copy(0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	261
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	262 #ifdef _MSC_VER // the use of 'this' below gets a warning, make it go away
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	263 #pragma warning( disable:4355 ) // 'this' : used in base member initializer list
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	264 #endif // _MSC_VER
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	265
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	266 _short_lived_surv_rate_group(new SurvRateGroup(this, "Short Lived",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	267 G1YoungSurvRateNumRegionsSummary)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	268 _survivor_surv_rate_group(new SurvRateGroup(this, "Survivor",
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	269 G1YoungSurvRateNumRegionsSummary)),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	270 // add here any more surv rate groups
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	271 _recorded_survivor_regions(0),
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	272 _recorded_survivor_head(NULL),
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	273 _recorded_survivor_tail(NULL),
1356 56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	274 _survivors_age_table(true),
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	275
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	276 _gc_overhead_perc(0.0) {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	277
942 2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 936 diff changeset	278 // Set up the region size and associated fields. Given that the
2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 936 diff changeset	279 // policy is created before the heap, we have to set this up here,
2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 936 diff changeset	280 // so it's done as soon as possible.
2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 936 diff changeset	281 HeapRegion::setup_heap_region_size(Arguments::min_heap_size());
1261 0414c1049f15 6923991: G1: improve scalability of RSet scanning iveresov parents: 1111 diff changeset	282 HeapRegionRemSet::setup_remset_size();
942 2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 936 diff changeset	283
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	284 G1ErgoVerbose::initialize();
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	285 if (PrintAdaptiveSizePolicy) {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	286 // Currently, we only use a single switch for all the heuristics.
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	287 G1ErgoVerbose::set_enabled(true);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	288 // Given that we don't currently have a verboseness level
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	289 // parameter, we'll hardcode this to high. This can be easily
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	290 // changed in the future.
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	291 G1ErgoVerbose::set_level(ErgoHigh);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	292 } else {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	293 G1ErgoVerbose::set_enabled(false);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	294 }
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	295
1391 79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	296 // Verify PLAB sizes
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	297 const uint region_size = HeapRegion::GrainWords;
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	298 if (YoungPLABSize > region_size \|\| OldPLABSize > region_size) {
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	299 char buffer[128];
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	300 jio_snprintf(buffer, sizeof(buffer), "%sPLABSize should be at most %u",
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	301 OldPLABSize > region_size ? "Old" : "Young", region_size);
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	302 vm_exit_during_initialization(buffer);
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	303 }
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	304
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	305 _recent_prev_end_times_for_all_gcs_sec->add(os::elapsedTime());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	306 _prev_collection_pause_end_ms = os::elapsedTime() * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	307
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	308 _par_last_gc_worker_start_times_ms = new double[_parallel_gc_threads];
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	309 _par_last_ext_root_scan_times_ms = new double[_parallel_gc_threads];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	310 _par_last_mark_stack_scan_times_ms = new double[_parallel_gc_threads];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	311
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	312 _par_last_update_rs_times_ms = new double[_parallel_gc_threads];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	313 _par_last_update_rs_processed_buffers = new double[_parallel_gc_threads];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	314
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	315 _par_last_scan_rs_times_ms = new double[_parallel_gc_threads];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	316
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	317 _par_last_obj_copy_times_ms = new double[_parallel_gc_threads];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	318
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	319 _par_last_termination_times_ms = new double[_parallel_gc_threads];
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	320 _par_last_termination_attempts = new double[_parallel_gc_threads];
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	321 _par_last_gc_worker_end_times_ms = new double[_parallel_gc_threads];
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	322 _par_last_gc_worker_times_ms = new double[_parallel_gc_threads];
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	323
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	324 // start conservatively
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	325 _expensive_region_limit_ms = 0.5 * (double) MaxGCPauseMillis;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	326
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	327 // <NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	328
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	329 int index;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	330 if (ParallelGCThreads == 0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	331 index = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	332 else if (ParallelGCThreads > 8)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	333 index = 7;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	334 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	335 index = ParallelGCThreads - 1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	336
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	337 _pending_card_diff_seq->add(0.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	338 _rs_length_diff_seq->add(rs_length_diff_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	339 _cost_per_card_ms_seq->add(cost_per_card_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	340 _fully_young_cards_per_entry_ratio_seq->add(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	341 fully_young_cards_per_entry_ratio_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	342 _cost_per_entry_ms_seq->add(cost_per_entry_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	343 _cost_per_byte_ms_seq->add(cost_per_byte_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	344 _constant_other_time_ms_seq->add(constant_other_time_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	345 _young_other_cost_per_region_ms_seq->add(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	346 young_other_cost_per_region_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	347 _non_young_other_cost_per_region_ms_seq->add(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	348 non_young_other_cost_per_region_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	349
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	350 // </NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	351
1610 79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	352 // Below, we might need to calculate the pause time target based on
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	353 // the pause interval. When we do so we are going to give G1 maximum
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	354 // flexibility and allow it to do pauses when it needs to. So, we'll
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	355 // arrange that the pause interval to be pause time target + 1 to
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	356 // ensure that a) the pause time target is maximized with respect to
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	357 // the pause interval and b) we maintain the invariant that pause
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	358 // time target < pause interval. If the user does not want this
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	359 // maximum flexibility, they will have to set the pause interval
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	360 // explicitly.
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	361
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	362 // First make sure that, if either parameter is set, its value is
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	363 // reasonable.
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	364 if (!FLAG_IS_DEFAULT(MaxGCPauseMillis)) {
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	365 if (MaxGCPauseMillis < 1) {
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	366 vm_exit_during_initialization("MaxGCPauseMillis should be "
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	367 "greater than 0");
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	368 }
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	369 }
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	370 if (!FLAG_IS_DEFAULT(GCPauseIntervalMillis)) {
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	371 if (GCPauseIntervalMillis < 1) {
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	372 vm_exit_during_initialization("GCPauseIntervalMillis should be "
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	373 "greater than 0");
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	374 }
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	375 }
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	376
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	377 // Then, if the pause time target parameter was not set, set it to
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	378 // the default value.
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	379 if (FLAG_IS_DEFAULT(MaxGCPauseMillis)) {
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	380 if (FLAG_IS_DEFAULT(GCPauseIntervalMillis)) {
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	381 // The default pause time target in G1 is 200ms
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	382 FLAG_SET_DEFAULT(MaxGCPauseMillis, 200);
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	383 } else {
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	384 // We do not allow the pause interval to be set without the
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	385 // pause time target
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	386 vm_exit_during_initialization("GCPauseIntervalMillis cannot be set "
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	387 "without setting MaxGCPauseMillis");
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	388 }
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	389 }
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	390
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	391 // Then, if the interval parameter was not set, set it according to
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	392 // the pause time target (this will also deal with the case when the
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	393 // pause time target is the default value).
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	394 if (FLAG_IS_DEFAULT(GCPauseIntervalMillis)) {
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	395 FLAG_SET_DEFAULT(GCPauseIntervalMillis, MaxGCPauseMillis + 1);
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	396 }
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	397
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	398 // Finally, make sure that the two parameters are consistent.
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	399 if (MaxGCPauseMillis >= GCPauseIntervalMillis) {
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	400 char buffer[256];
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	401 jio_snprintf(buffer, 256,
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	402 "MaxGCPauseMillis (%u) should be less than "
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	403 "GCPauseIntervalMillis (%u)",
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	404 MaxGCPauseMillis, GCPauseIntervalMillis);
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	405 vm_exit_during_initialization(buffer);
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	406 }
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	407
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	408 double max_gc_time = (double) MaxGCPauseMillis / 1000.0;
1610 79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	409 double time_slice = (double) GCPauseIntervalMillis / 1000.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	410 _mmu_tracker = new G1MMUTrackerQueue(time_slice, max_gc_time);
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	411 _sigma = (double) G1ConfidencePercent / 100.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	412
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	413 // start conservatively (around 50ms is about right)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	414 _concurrent_mark_remark_times_ms->add(0.05);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	415 _concurrent_mark_cleanup_times_ms->add(0.20);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	416 _tenuring_threshold = MaxTenuringThreshold;
3868 ae73da50be4b 7081064: G1: remove develop params G1FixedSurvivorSpaceSize, G1FixedTenuringThreshold, and G1FixedEdenSize tonyp parents: 3867 diff changeset	417 // _max_survivor_regions will be calculated by
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	418 // update_young_list_target_length() during initialization.
3868 ae73da50be4b 7081064: G1: remove develop params G1FixedSurvivorSpaceSize, G1FixedTenuringThreshold, and G1FixedEdenSize tonyp parents: 3867 diff changeset	419 _max_survivor_regions = 0;
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	420
1356 56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	421 assert(GCTimeRatio > 0,
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	422 "we should have set it to a default value set_g1_gc_flags() "
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	423 "if a user set it to 0");
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	424 _gc_overhead_perc = 100.0 * (1.0 / (1.0 + GCTimeRatio));
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	425
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	426 uintx reserve_perc = G1ReservePercent;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	427 // Put an artificial ceiling on this so that it's not set to a silly value.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	428 if (reserve_perc > 50) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	429 reserve_perc = 50;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	430 warning("G1ReservePercent is set to a value that is too large, "
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	431 "it's been updated to %u", reserve_perc);
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	432 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	433 _reserve_factor = (double) reserve_perc / 100.0;
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	434 // This will be set when the heap is expanded
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	435 // for the first time during initialization.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	436 _reserve_regions = 0;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	437
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	438 initialize_all();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	439 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	440
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	441 // Increment "i", mod "len"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	442 static void inc_mod(int& i, int len) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	443 i++; if (i == len) i = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	444 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	445
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	446 void G1CollectorPolicy::initialize_flags() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	447 set_min_alignment(HeapRegion::GrainBytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	448 set_max_alignment(GenRemSet::max_alignment_constraint(rem_set_name()));
547 1e458753107d 6802413: G1: G1FixedSurvivorSpaceSize should be converted into regions in calculate_survivors_policy() apetrusenko parents: 545 diff changeset	449 if (SurvivorRatio < 1) {
1e458753107d 6802413: G1: G1FixedSurvivorSpaceSize should be converted into regions in calculate_survivors_policy() apetrusenko parents: 545 diff changeset	450 vm_exit_during_initialization("Invalid survivor ratio specified");
1e458753107d 6802413: G1: G1FixedSurvivorSpaceSize should be converted into regions in calculate_survivors_policy() apetrusenko parents: 545 diff changeset	451 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	452 CollectorPolicy::initialize_flags();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	453 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	454
1285 a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	455 // The easiest way to deal with the parsing of the NewSize /
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	456 // MaxNewSize / etc. parameteres is to re-use the code in the
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	457 // TwoGenerationCollectorPolicy class. This is similar to what
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	458 // ParallelScavenge does with its GenerationSizer class (see
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	459 // ParallelScavengeHeap::initialize()). We might change this in the
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	460 // future, but it's a good start.
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	461 class G1YoungGenSizer : public TwoGenerationCollectorPolicy {
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	462
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	463 public:
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	464 G1YoungGenSizer() {
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	465 initialize_flags();
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	466 initialize_size_info();
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	467 }
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	468 size_t size_to_region_num(size_t byte_size) {
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	469 return MAX2((size_t) 1, byte_size / HeapRegion::GrainBytes);
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	470 }
1285 a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	471 size_t min_young_region_num() {
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	472 return size_to_region_num(_min_gen0_size);
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	473 }
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	474 size_t initial_young_region_num() {
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	475 return size_to_region_num(_initial_gen0_size);
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	476 }
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	477 size_t max_young_region_num() {
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	478 return size_to_region_num(_max_gen0_size);
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	479 }
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	480 };
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	481
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	482 void G1CollectorPolicy::update_young_list_size_using_newratio(size_t number_of_heap_regions) {
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	483 assert(number_of_heap_regions > 0, "Heap must be initialized");
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	484 size_t young_size = number_of_heap_regions / (NewRatio + 1);
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	485 _min_desired_young_length = young_size;
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	486 _max_desired_young_length = young_size;
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	487 }
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	488
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	489 void G1CollectorPolicy::init() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	490 // Set aside an initial future to_space.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	491 _g1 = G1CollectedHeap::heap();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	492
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	493 assert(Heap_lock->owned_by_self(), "Locking discipline.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	494
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	495 initialize_gc_policy_counters();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	496
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	497 G1YoungGenSizer sizer;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	498 size_t initial_region_num = sizer.initial_young_region_num();
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	499 _min_desired_young_length = sizer.min_young_region_num();
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	500 _max_desired_young_length = sizer.max_young_region_num();
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	501
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	502 if (FLAG_IS_CMDLINE(NewRatio)) {
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	503 if (FLAG_IS_CMDLINE(NewSize) \|\| FLAG_IS_CMDLINE(MaxNewSize)) {
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	504 gclog_or_tty->print_cr("-XX:NewSize and -XX:MaxNewSize overrides -XX:NewRatio");
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	505 } else {
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	506 // Treat NewRatio as a fixed size that is only recalculated when the heap size changes
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	507 size_t heap_regions = sizer.size_to_region_num(_g1->n_regions());
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	508 update_young_list_size_using_newratio(heap_regions);
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	509 _using_new_ratio_calculations = true;
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	510 }
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	511 }
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	512
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	513 // GenCollectorPolicy guarantees that min <= initial <= max.
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	514 // Asserting here just to state that we rely on this property.
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	515 assert(_min_desired_young_length <= _max_desired_young_length, "Invalid min/max young gen size values");
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	516 assert(initial_region_num <= _max_desired_young_length, "Initial young gen size too large");
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	517 assert(_min_desired_young_length <= initial_region_num, "Initial young gen size too small");
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	518
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	519 set_adaptive_young_list_length(_min_desired_young_length < _max_desired_young_length);
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	520 if (adaptive_young_list_length()) {
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	521 _young_list_fixed_length = 0;
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	522 } else {
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	523 _young_list_fixed_length = initial_region_num;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	524 }
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	525 _free_regions_at_end_of_collection = _g1->free_regions();
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	526 update_young_list_target_length();
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	527 _prev_eden_capacity = _young_list_target_length * HeapRegion::GrainBytes;
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	528
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	529 // We may immediately start allocating regions and placing them on the
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	530 // collection set list. Initialize the per-collection set info
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	531 start_incremental_cset_building();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	532 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	533
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	534 // Create the jstat counters for the policy.
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	535 void G1CollectorPolicy::initialize_gc_policy_counters() {
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	536 _gc_policy_counters = new GCPolicyCounters("GarbageFirst", 1, 3);
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	537 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	538
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	539 bool G1CollectorPolicy::predict_will_fit(size_t young_length,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	540 double base_time_ms,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	541 size_t base_free_regions,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	542 double target_pause_time_ms) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	543 if (young_length >= base_free_regions) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	544 // end condition 1: not enough space for the young regions
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	545 return false;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	546 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	547
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	548 double accum_surv_rate = accum_yg_surv_rate_pred((int)(young_length - 1));
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	549 size_t bytes_to_copy =
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	550 (size_t) (accum_surv_rate * (double) HeapRegion::GrainBytes);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	551 double copy_time_ms = predict_object_copy_time_ms(bytes_to_copy);
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	552 double young_other_time_ms = predict_young_other_time_ms(young_length);
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	553 double pause_time_ms = base_time_ms + copy_time_ms + young_other_time_ms;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	554 if (pause_time_ms > target_pause_time_ms) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	555 // end condition 2: prediction is over the target pause time
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	556 return false;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	557 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	558
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	559 size_t free_bytes =
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	560 (base_free_regions - young_length) * HeapRegion::GrainBytes;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	561 if ((2.0 * sigma()) * (double) bytes_to_copy > (double) free_bytes) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	562 // end condition 3: out-of-space (conservatively!)
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	563 return false;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	564 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	565
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	566 // success!
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	567 return true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	568 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	569
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	570 void G1CollectorPolicy::record_new_heap_size(size_t new_number_of_regions) {
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	571 // re-calculate the necessary reserve
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	572 double reserve_regions_d = (double) new_number_of_regions * _reserve_factor;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	573 // We use ceiling so that if reserve_regions_d is > 0.0 (but
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	574 // smaller than 1.0) we'll get 1.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	575 _reserve_regions = (size_t) ceil(reserve_regions_d);
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	576
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	577 if (_using_new_ratio_calculations) {
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	578 // -XX:NewRatio was specified so we need to update the
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	579 // young gen length when the heap size has changed.
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	580 update_young_list_size_using_newratio(new_number_of_regions);
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	581 }
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	582 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	583
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	584 size_t G1CollectorPolicy::calculate_young_list_desired_min_length(
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	585 size_t base_min_length) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	586 size_t desired_min_length = 0;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	587 if (adaptive_young_list_length()) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	588 if (_alloc_rate_ms_seq->num() > 3) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	589 double now_sec = os::elapsedTime();
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	590 double when_ms = _mmu_tracker->when_max_gc_sec(now_sec) * 1000.0;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	591 double alloc_rate_ms = predict_alloc_rate_ms();
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	592 desired_min_length = (size_t) ceil(alloc_rate_ms * when_ms);
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	593 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	594 // otherwise we don't have enough info to make the prediction
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	595 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	596 }
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	597 desired_min_length += base_min_length;
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	598 // make sure we don't go below any user-defined minimum bound
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	599 return MAX2(_min_desired_young_length, desired_min_length);
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	600 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	601
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	602 size_t G1CollectorPolicy::calculate_young_list_desired_max_length() {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	603 // Here, we might want to also take into account any additional
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	604 // constraints (i.e., user-defined minimum bound). Currently, we
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	605 // effectively don't set this bound.
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	606 return _max_desired_young_length;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	607 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	608
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	609 void G1CollectorPolicy::update_young_list_target_length(size_t rs_lengths) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	610 if (rs_lengths == (size_t) -1) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	611 // if it's set to the default value (-1), we should predict it;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	612 // otherwise, use the given value.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	613 rs_lengths = (size_t) get_new_prediction(_rs_lengths_seq);
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	614 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	615
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	616 // Calculate the absolute and desired min bounds.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	617
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	618 // This is how many young regions we already have (currently: the survivors).
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	619 size_t base_min_length = recorded_survivor_regions();
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	620 // This is the absolute minimum young length, which ensures that we
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	621 // can allocate one eden region in the worst-case.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	622 size_t absolute_min_length = base_min_length + 1;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	623 size_t desired_min_length =
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	624 calculate_young_list_desired_min_length(base_min_length);
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	625 if (desired_min_length < absolute_min_length) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	626 desired_min_length = absolute_min_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	627 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	628
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	629 // Calculate the absolute and desired max bounds.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	630
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	631 // We will try our best not to "eat" into the reserve.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	632 size_t absolute_max_length = 0;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	633 if (_free_regions_at_end_of_collection > _reserve_regions) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	634 absolute_max_length = _free_regions_at_end_of_collection - _reserve_regions;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	635 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	636 size_t desired_max_length = calculate_young_list_desired_max_length();
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	637 if (desired_max_length > absolute_max_length) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	638 desired_max_length = absolute_max_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	639 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	640
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	641 size_t young_list_target_length = 0;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	642 if (adaptive_young_list_length()) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	643 if (full_young_gcs()) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	644 young_list_target_length =
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	645 calculate_young_list_target_length(rs_lengths,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	646 base_min_length,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	647 desired_min_length,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	648 desired_max_length);
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	649 _rs_lengths_prediction = rs_lengths;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	650 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	651 // Don't calculate anything and let the code below bound it to
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	652 // the desired_min_length, i.e., do the next GC as soon as
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	653 // possible to maximize how many old regions we can add to it.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	654 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	655 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	656 if (full_young_gcs()) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	657 young_list_target_length = _young_list_fixed_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	658 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	659 // A bit arbitrary: during partially-young GCs we allocate half
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	660 // the young regions to try to add old regions to the CSet.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	661 young_list_target_length = _young_list_fixed_length / 2;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	662 // We choose to accept that we might go under the desired min
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	663 // length given that we intentionally ask for a smaller young gen.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	664 desired_min_length = absolute_min_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	665 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	666 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	667
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	668 // Make sure we don't go over the desired max length, nor under the
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	669 // desired min length. In case they clash, desired_min_length wins
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	670 // which is why that test is second.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	671 if (young_list_target_length > desired_max_length) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	672 young_list_target_length = desired_max_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	673 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	674 if (young_list_target_length < desired_min_length) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	675 young_list_target_length = desired_min_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	676 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	677
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	678 assert(young_list_target_length > recorded_survivor_regions(),
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	679 "we should be able to allocate at least one eden region");
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	680 assert(young_list_target_length >= absolute_min_length, "post-condition");
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	681 _young_list_target_length = young_list_target_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	682
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	683 update_max_gc_locker_expansion();
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	684 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	685
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	686 size_t
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	687 G1CollectorPolicy::calculate_young_list_target_length(size_t rs_lengths,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	688 size_t base_min_length,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	689 size_t desired_min_length,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	690 size_t desired_max_length) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	691 assert(adaptive_young_list_length(), "pre-condition");
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	692 assert(full_young_gcs(), "only call this for fully-young GCs");
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	693
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	694 // In case some edge-condition makes the desired max length too small...
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	695 if (desired_max_length <= desired_min_length) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	696 return desired_min_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	697 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	698
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	699 // We'll adjust min_young_length and max_young_length not to include
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	700 // the already allocated young regions (i.e., so they reflect the
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	701 // min and max eden regions we'll allocate). The base_min_length
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	702 // will be reflected in the predictions by the
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	703 // survivor_regions_evac_time prediction.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	704 assert(desired_min_length > base_min_length, "invariant");
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	705 size_t min_young_length = desired_min_length - base_min_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	706 assert(desired_max_length > base_min_length, "invariant");
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	707 size_t max_young_length = desired_max_length - base_min_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	708
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	709 double target_pause_time_ms = _mmu_tracker->max_gc_time() * 1000.0;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	710 double survivor_regions_evac_time = predict_survivor_regions_evac_time();
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	711 size_t pending_cards = (size_t) get_new_prediction(_pending_cards_seq);
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	712 size_t adj_rs_lengths = rs_lengths + predict_rs_length_diff();
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	713 size_t scanned_cards = predict_young_card_num(adj_rs_lengths);
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	714 double base_time_ms =
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	715 predict_base_elapsed_time_ms(pending_cards, scanned_cards) +
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	716 survivor_regions_evac_time;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	717 size_t available_free_regions = _free_regions_at_end_of_collection;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	718 size_t base_free_regions = 0;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	719 if (available_free_regions > _reserve_regions) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	720 base_free_regions = available_free_regions - _reserve_regions;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	721 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	722
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	723 // Here, we will make sure that the shortest young length that
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	724 // makes sense fits within the target pause time.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	725
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	726 if (predict_will_fit(min_young_length, base_time_ms,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	727 base_free_regions, target_pause_time_ms)) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	728 // The shortest young length will fit into the target pause time;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	729 // we'll now check whether the absolute maximum number of young
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	730 // regions will fit in the target pause time. If not, we'll do
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	731 // a binary search between min_young_length and max_young_length.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	732 if (predict_will_fit(max_young_length, base_time_ms,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	733 base_free_regions, target_pause_time_ms)) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	734 // The maximum young length will fit into the target pause time.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	735 // We are done so set min young length to the maximum length (as
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	736 // the result is assumed to be returned in min_young_length).
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	737 min_young_length = max_young_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	738 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	739 // The maximum possible number of young regions will not fit within
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	740 // the target pause time so we'll search for the optimal
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	741 // length. The loop invariants are:
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	742 //
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	743 // min_young_length < max_young_length
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	744 // min_young_length is known to fit into the target pause time
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	745 // max_young_length is known not to fit into the target pause time
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	746 //
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	747 // Going into the loop we know the above hold as we've just
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	748 // checked them. Every time around the loop we check whether
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	749 // the middle value between min_young_length and
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	750 // max_young_length fits into the target pause time. If it
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	751 // does, it becomes the new min. If it doesn't, it becomes
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	752 // the new max. This way we maintain the loop invariants.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	753
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	754 assert(min_young_length < max_young_length, "invariant");
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	755 size_t diff = (max_young_length - min_young_length) / 2;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	756 while (diff > 0) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	757 size_t young_length = min_young_length + diff;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	758 if (predict_will_fit(young_length, base_time_ms,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	759 base_free_regions, target_pause_time_ms)) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	760 min_young_length = young_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	761 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	762 max_young_length = young_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	763 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	764 assert(min_young_length < max_young_length, "invariant");
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	765 diff = (max_young_length - min_young_length) / 2;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	766 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	767 // The results is min_young_length which, according to the
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	768 // loop invariants, should fit within the target pause time.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	769
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	770 // These are the post-conditions of the binary search above:
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	771 assert(min_young_length < max_young_length,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	772 "otherwise we should have discovered that max_young_length "
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	773 "fits into the pause target and not done the binary search");
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	774 assert(predict_will_fit(min_young_length, base_time_ms,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	775 base_free_regions, target_pause_time_ms),
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	776 "min_young_length, the result of the binary search, should "
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	777 "fit into the pause target");
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	778 assert(!predict_will_fit(min_young_length + 1, base_time_ms,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	779 base_free_regions, target_pause_time_ms),
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	780 "min_young_length, the result of the binary search, should be "
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	781 "optimal, so no larger length should fit into the pause target");
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	782 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	783 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	784 // Even the minimum length doesn't fit into the pause time
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	785 // target, return it as the result nevertheless.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	786 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	787 return base_min_length + min_young_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	788 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	789
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	790 double G1CollectorPolicy::predict_survivor_regions_evac_time() {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	791 double survivor_regions_evac_time = 0.0;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	792 for (HeapRegion * r = _recorded_survivor_head;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	793 r != NULL && r != _recorded_survivor_tail->get_next_young_region();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	794 r = r->get_next_young_region()) {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	795 survivor_regions_evac_time += predict_region_elapsed_time_ms(r, true);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	796 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	797 return survivor_regions_evac_time;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	798 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	799
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	800 void G1CollectorPolicy::revise_young_list_target_length_if_necessary() {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	801 guarantee( adaptive_young_list_length(), "should not call this otherwise" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	802
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	803 size_t rs_lengths = _g1->young_list()->sampled_rs_lengths();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	804 if (rs_lengths > _rs_lengths_prediction) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	805 // add 10% to avoid having to recalculate often
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	806 size_t rs_lengths_prediction = rs_lengths * 1100 / 1000;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	807 update_young_list_target_length(rs_lengths_prediction);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	808 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	809 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	810
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	811
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	812
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	813 HeapWord* G1CollectorPolicy::mem_allocate_work(size_t size,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	814 bool is_tlab,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	815 bool* gc_overhead_limit_was_exceeded) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	816 guarantee(false, "Not using this policy feature yet.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	817 return NULL;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	818 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	819
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	820 // This method controls how a collector handles one or more
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	821 // of its generations being fully allocated.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	822 HeapWord* G1CollectorPolicy::satisfy_failed_allocation(size_t size,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	823 bool is_tlab) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	824 guarantee(false, "Not using this policy feature yet.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	825 return NULL;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	826 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	827
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	828
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	829 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	830 bool G1CollectorPolicy::verify_young_ages() {
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	831 HeapRegion* head = _g1->young_list()->first_region();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	832 return
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	833 verify_young_ages(head, _short_lived_surv_rate_group);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	834 // also call verify_young_ages on any additional surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	835 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	836
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	837 bool
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	838 G1CollectorPolicy::verify_young_ages(HeapRegion* head,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	839 SurvRateGroup *surv_rate_group) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	840 guarantee( surv_rate_group != NULL, "pre-condition" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	841
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	842 const char* name = surv_rate_group->name();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	843 bool ret = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	844 int prev_age = -1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	845
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	846 for (HeapRegion* curr = head;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	847 curr != NULL;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	848 curr = curr->get_next_young_region()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	849 SurvRateGroup* group = curr->surv_rate_group();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	850 if (group == NULL && !curr->is_survivor()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	851 gclog_or_tty->print_cr("## %s: encountered NULL surv_rate_group", name);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	852 ret = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	853 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	854
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	855 if (surv_rate_group == group) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	856 int age = curr->age_in_surv_rate_group();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	857
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	858 if (age < 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	859 gclog_or_tty->print_cr("## %s: encountered negative age", name);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	860 ret = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	861 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	862
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	863 if (age <= prev_age) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	864 gclog_or_tty->print_cr("## %s: region ages are not strictly increasing "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	865 "(%d, %d)", name, age, prev_age);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	866 ret = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	867 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	868 prev_age = age;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	869 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	870 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	871
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	872 return ret;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	873 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	874 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	875
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	876 void G1CollectorPolicy::record_full_collection_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	877 _cur_collection_start_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	878 // Release the future to-space so that it is available for compaction into.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	879 _g1->set_full_collection();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	880 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	881
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	882 void G1CollectorPolicy::record_full_collection_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	883 // Consider this like a collection pause for the purposes of allocation
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	884 // since last pause.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	885 double end_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	886 double full_gc_time_sec = end_sec - _cur_collection_start_sec;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	887 double full_gc_time_ms = full_gc_time_sec * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	888
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	889 _all_full_gc_times_ms->add(full_gc_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	890
595 3698e8f47799 6804746: G1: guarantee(variance() > -1.0,"variance should be >= 0") (due to evacuation failure) tonyp parents: 547 diff changeset	891 update_recent_gc_times(end_sec, full_gc_time_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	892
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	893 _g1->clear_full_collection();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	894
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	895 // "Nuke" the heuristics that control the fully/partially young GC
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	896 // transitions and make sure we start with fully young GCs after the
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	897 // Full GC.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	898 set_full_young_gcs(true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	899 _last_full_young_gc = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	900 _should_revert_to_full_young_gcs = false;
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	901 clear_initiate_conc_mark_if_possible();
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	902 clear_during_initial_mark_pause();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	903 _known_garbage_bytes = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	904 _known_garbage_ratio = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	905 _in_marking_window = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	906 _in_marking_window_im = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	907
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	908 _short_lived_surv_rate_group->start_adding_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	909 // also call this on any additional surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	910
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	911 record_survivor_regions(0, NULL, NULL);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	912
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	913 _prev_region_num_young = _region_num_young;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	914 _prev_region_num_tenured = _region_num_tenured;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	915
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	916 _free_regions_at_end_of_collection = _g1->free_regions();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	917 // Reset survivors SurvRateGroup.
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	918 _survivor_surv_rate_group->reset();
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	919 update_young_list_target_length();
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	920 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	921
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	922 void G1CollectorPolicy::record_stop_world_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	923 _stop_world_start = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	924 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	925
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	926 void G1CollectorPolicy::record_collection_pause_start(double start_time_sec,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	927 size_t start_used) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	928 if (PrintGCDetails) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	929 gclog_or_tty->stamp(PrintGCTimeStamps);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	930 gclog_or_tty->print("[GC pause");
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	931 gclog_or_tty->print(" (%s)", full_young_gcs() ? "young" : "partial");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	932 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	933
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	934 // We only need to do this here as the policy will only be applied
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	935 // to the GC we're about to start. so, no point is calculating this
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	936 // every time we calculate / recalculate the target young length.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	937 update_survivors_policy();
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	938
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	939 assert(_g1->used() == _g1->recalculate_used(),
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	940 err_msg("sanity, used: "SIZE_FORMAT" recalculate_used: "SIZE_FORMAT,
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	941 _g1->used(), _g1->recalculate_used()));
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	942
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	943 double s_w_t_ms = (start_time_sec - _stop_world_start) * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	944 _all_stop_world_times_ms->add(s_w_t_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	945 _stop_world_start = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	946
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	947 _cur_collection_start_sec = start_time_sec;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	948 _cur_collection_pause_used_at_start_bytes = start_used;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	949 _cur_collection_pause_used_regions_at_start = _g1->used_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	950 _pending_cards = _g1->pending_card_num();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	951 _max_pending_cards = _g1->max_pending_card_num();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	952
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	953 _bytes_in_collection_set_before_gc = 0;
3830 f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	954 _bytes_copied_during_gc = 0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	955
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	956 YoungList* young_list = _g1->young_list();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	957 _eden_bytes_before_gc = young_list->eden_used_bytes();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	958 _survivor_bytes_before_gc = young_list->survivor_used_bytes();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	959 _capacity_before_gc = _g1->capacity();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	960
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	961 #ifdef DEBUG
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	962 // initialise these to something well known so that we can spot
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	963 // if they are not set properly
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	964
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	965 for (int i = 0; i < _parallel_gc_threads; ++i) {
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	966 _par_last_gc_worker_start_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	967 _par_last_ext_root_scan_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	968 _par_last_mark_stack_scan_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	969 _par_last_update_rs_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	970 _par_last_update_rs_processed_buffers[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	971 _par_last_scan_rs_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	972 _par_last_obj_copy_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	973 _par_last_termination_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	974 _par_last_termination_attempts[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	975 _par_last_gc_worker_end_times_ms[i] = -1234.0;
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	976 _par_last_gc_worker_times_ms[i] = -1234.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	977 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	978 #endif
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	979
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	980 for (int i = 0; i < _aux_num; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	981 _cur_aux_times_ms[i] = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	982 _cur_aux_times_set[i] = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	983 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	984
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	985 _satb_drain_time_set = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	986 _last_satb_drain_processed_buffers = -1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	987
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	988 _last_young_gc_full = false;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	989
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	990 // do that for any other surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	991 _short_lived_surv_rate_group->stop_adding_regions();
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	992 _survivors_age_table.clear();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	993
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	994 assert( verify_young_ages(), "region age verification" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	995 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	996
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	997 void G1CollectorPolicy::record_mark_closure_time(double mark_closure_time_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	998 _mark_closure_time_ms = mark_closure_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	999 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1000
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1001 void G1CollectorPolicy::record_concurrent_mark_init_end(double
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1002 mark_init_elapsed_time_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1003 _during_marking = true;
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1004 assert(!initiate_conc_mark_if_possible(), "we should have cleared it by now");
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1005 clear_during_initial_mark_pause();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1006 _cur_mark_stop_world_time_ms = mark_init_elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1007 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1008
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1009 void G1CollectorPolicy::record_concurrent_mark_remark_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1010 _mark_remark_start_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1011 _during_marking = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1012 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1013
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1014 void G1CollectorPolicy::record_concurrent_mark_remark_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1015 double end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1016 double elapsed_time_ms = (end_time_sec - _mark_remark_start_sec)*1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1017 _concurrent_mark_remark_times_ms->add(elapsed_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1018 _cur_mark_stop_world_time_ms += elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1019 _prev_collection_pause_end_ms += elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1020
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1021 _mmu_tracker->add_pause(_mark_remark_start_sec, end_time_sec, true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1022 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1023
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1024 void G1CollectorPolicy::record_concurrent_mark_cleanup_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1025 _mark_cleanup_start_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1026 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1027
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1028 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1029 G1CollectorPolicy::record_concurrent_mark_cleanup_end(size_t freed_bytes,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1030 size_t max_live_bytes) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1031 record_concurrent_mark_cleanup_end_work1(freed_bytes, max_live_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1032 record_concurrent_mark_cleanup_end_work2();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1033 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1034
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1035 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1036 G1CollectorPolicy::
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1037 record_concurrent_mark_cleanup_end_work1(size_t freed_bytes,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1038 size_t max_live_bytes) {
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1039 if (_n_marks < 2) {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1040 _n_marks++;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1041 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1042 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1043
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1044 // The important thing about this is that it includes "os::elapsedTime".
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1045 void G1CollectorPolicy::record_concurrent_mark_cleanup_end_work2() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1046 double end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1047 double elapsed_time_ms = (end_time_sec - _mark_cleanup_start_sec)*1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1048 _concurrent_mark_cleanup_times_ms->add(elapsed_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1049 _cur_mark_stop_world_time_ms += elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1050 _prev_collection_pause_end_ms += elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1051
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1052 _mmu_tracker->add_pause(_mark_cleanup_start_sec, end_time_sec, true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1053
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1054 _num_markings++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1055 _n_pauses_at_mark_end = _n_pauses;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1056 _n_marks_since_last_pause++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1057 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1058
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1059 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1060 G1CollectorPolicy::record_concurrent_mark_cleanup_completed() {
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1061 _should_revert_to_full_young_gcs = false;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1062 _last_full_young_gc = true;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1063 _in_marking_window = false;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1064 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1065
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1066 void G1CollectorPolicy::record_concurrent_pause() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1067 if (_stop_world_start > 0.0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1068 double yield_ms = (os::elapsedTime() - _stop_world_start) * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1069 _all_yield_times_ms->add(yield_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1070 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1071 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1072
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1073 void G1CollectorPolicy::record_concurrent_pause_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1074 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1075
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1076 template<class T>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1077 T sum_of(T* sum_arr, int start, int n, int N) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1078 T sum = (T)0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1079 for (int i = 0; i < n; i++) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1080 int j = (start + i) % N;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1081 sum += sum_arr[j];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1082 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1083 return sum;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1084 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1085
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	1086 void G1CollectorPolicy::print_par_stats(int level,
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	1087 const char* str,
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1088 double* data) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1089 double min = data[0], max = data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1090 double total = 0.0;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1091 LineBuffer buf(level);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1092 buf.append("[%s (ms):", str);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1093 for (uint i = 0; i < ParallelGCThreads; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1094 double val = data[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1095 if (val < min)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1096 min = val;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1097 if (val > max)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1098 max = val;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1099 total += val;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1100 buf.append(" %3.1lf", val);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1101 }
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1102 buf.append_and_print_cr("");
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1103 double avg = total / (double) ParallelGCThreads;
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1104 buf.append_and_print_cr(" Avg: %5.1lf, Min: %5.1lf, Max: %5.1lf, Diff: %5.1lf]",
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1105 avg, min, max, max - min);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1106 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1107
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	1108 void G1CollectorPolicy::print_par_sizes(int level,
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	1109 const char* str,
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1110 double* data) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1111 double min = data[0], max = data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1112 double total = 0.0;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1113 LineBuffer buf(level);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1114 buf.append("[%s :", str);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1115 for (uint i = 0; i < ParallelGCThreads; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1116 double val = data[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1117 if (val < min)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1118 min = val;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1119 if (val > max)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1120 max = val;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1121 total += val;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1122 buf.append(" %d", (int) val);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1123 }
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1124 buf.append_and_print_cr("");
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1125 double avg = total / (double) ParallelGCThreads;
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1126 buf.append_and_print_cr(" Sum: %d, Avg: %d, Min: %d, Max: %d, Diff: %d]",
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1127 (int)total, (int)avg, (int)min, (int)max, (int)max - (int)min);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1128 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1129
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1130 void G1CollectorPolicy::print_stats (int level,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1131 const char* str,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1132 double value) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1133 LineBuffer(level).append_and_print_cr("[%s: %5.1lf ms]", str, value);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1134 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1135
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1136 void G1CollectorPolicy::print_stats (int level,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1137 const char* str,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1138 int value) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1139 LineBuffer(level).append_and_print_cr("[%s: %d]", str, value);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1140 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1141
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1142 double G1CollectorPolicy::avg_value (double* data) {
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1143 if (G1CollectedHeap::use_parallel_gc_threads()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1144 double ret = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1145 for (uint i = 0; i < ParallelGCThreads; ++i)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1146 ret += data[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1147 return ret / (double) ParallelGCThreads;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1148 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1149 return data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1150 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1151 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1152
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1153 double G1CollectorPolicy::max_value (double* data) {
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1154 if (G1CollectedHeap::use_parallel_gc_threads()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1155 double ret = data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1156 for (uint i = 1; i < ParallelGCThreads; ++i)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1157 if (data[i] > ret)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1158 ret = data[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1159 return ret;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1160 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1161 return data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1162 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1163 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1164
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1165 double G1CollectorPolicy::sum_of_values (double* data) {
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1166 if (G1CollectedHeap::use_parallel_gc_threads()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1167 double sum = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1168 for (uint i = 0; i < ParallelGCThreads; i++)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1169 sum += data[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1170 return sum;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1171 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1172 return data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1173 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1174 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1175
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1176 double G1CollectorPolicy::max_sum (double* data1,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1177 double* data2) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1178 double ret = data1[0] + data2[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1179
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1180 if (G1CollectedHeap::use_parallel_gc_threads()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1181 for (uint i = 1; i < ParallelGCThreads; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1182 double data = data1[i] + data2[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1183 if (data > ret)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1184 ret = data;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1185 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1186 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1187 return ret;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1188 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1189
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1190 // Anything below that is considered to be zero
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1191 #define MIN_TIMER_GRANULARITY 0.0000001
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1192
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1193 void G1CollectorPolicy::record_collection_pause_end() {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1194 double end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1195 double elapsed_ms = _last_pause_time_ms;
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1196 bool parallel = G1CollectedHeap::use_parallel_gc_threads();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1197 size_t rs_size =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1198 _cur_collection_pause_used_regions_at_start - collection_set_size();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1199 size_t cur_used_bytes = _g1->used();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1200 assert(cur_used_bytes == _g1->recalculate_used(), "It should!");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1201 bool last_pause_included_initial_mark = false;
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1202 bool update_stats = !_g1->evacuation_failed();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1203
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1204 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1205 if (G1YoungSurvRateVerbose) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1206 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1207 _short_lived_surv_rate_group->print();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1208 // do that for any other surv rate groups too
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1209 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1210 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1211
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1212 last_pause_included_initial_mark = during_initial_mark_pause();
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1213 if (last_pause_included_initial_mark)
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1214 record_concurrent_mark_init_end(0.0);
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1215
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1216 size_t marking_initiating_used_threshold =
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1217 (_g1->capacity() / 100) * InitiatingHeapOccupancyPercent;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1218
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1219 if (!_g1->mark_in_progress() && !_last_full_young_gc) {
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1220 assert(!last_pause_included_initial_mark, "invariant");
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1221 if (cur_used_bytes > marking_initiating_used_threshold) {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1222 if (cur_used_bytes > _prev_collection_pause_used_at_end_bytes) {
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1223 assert(!during_initial_mark_pause(), "we should not see this here");
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1224
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1225 ergo_verbose3(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1226 "request concurrent cycle initiation",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1227 ergo_format_reason("occupancy higher than threshold")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1228 ergo_format_byte("occupancy")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1229 ergo_format_byte_perc("threshold"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1230 cur_used_bytes,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1231 marking_initiating_used_threshold,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1232 (double) InitiatingHeapOccupancyPercent);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1233
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1234 // Note: this might have already been set, if during the last
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1235 // pause we decided to start a cycle but at the beginning of
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1236 // this pause we decided to postpone it. That's OK.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1237 set_initiate_conc_mark_if_possible();
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1238 } else {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1239 ergo_verbose2(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1240 "do not request concurrent cycle initiation",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1241 ergo_format_reason("occupancy lower than previous occupancy")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1242 ergo_format_byte("occupancy")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1243 ergo_format_byte("previous occupancy"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1244 cur_used_bytes,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1245 _prev_collection_pause_used_at_end_bytes);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1246 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1247 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1248 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1249
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1250 _prev_collection_pause_used_at_end_bytes = cur_used_bytes;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1251
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1252 _mmu_tracker->add_pause(end_time_sec - elapsed_ms/1000.0,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1253 end_time_sec, false);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1254
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1255 guarantee(_cur_collection_pause_used_regions_at_start >=
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1256 collection_set_size(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1257 "Negative RS size?");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1258
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1259 // This assert is exempted when we're doing parallel collection pauses,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1260 // because the fragmentation caused by the parallel GC allocation buffers
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1261 // can lead to more memory being used during collection than was used
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1262 // before. Best leave this out until the fragmentation problem is fixed.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1263 // Pauses in which evacuation failed can also lead to negative
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1264 // collections, since no space is reclaimed from a region containing an
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1265 // object whose evacuation failed.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1266 // Further, we're now always doing parallel collection. But I'm still
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1267 // leaving this here as a placeholder for a more precise assertion later.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1268 // (DLD, 10/05.)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1269 assert((true \|\| parallel) // Always using GC LABs now.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1270 \|\| _g1->evacuation_failed()
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1271 \|\| _cur_collection_pause_used_at_start_bytes >= cur_used_bytes,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1272 "Negative collection");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1273
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1274 size_t freed_bytes =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1275 _cur_collection_pause_used_at_start_bytes - cur_used_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1276 size_t surviving_bytes = _collection_set_bytes_used_before - freed_bytes;
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1277
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1278 double survival_fraction =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1279 (double)surviving_bytes/
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1280 (double)_collection_set_bytes_used_before;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1281
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1282 _n_pauses++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1283
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1284 double ext_root_scan_time = avg_value(_par_last_ext_root_scan_times_ms);
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1285 double mark_stack_scan_time = avg_value(_par_last_mark_stack_scan_times_ms);
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1286 double update_rs_time = avg_value(_par_last_update_rs_times_ms);
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1287 double update_rs_processed_buffers =
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1288 sum_of_values(_par_last_update_rs_processed_buffers);
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1289 double scan_rs_time = avg_value(_par_last_scan_rs_times_ms);
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1290 double obj_copy_time = avg_value(_par_last_obj_copy_times_ms);
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1291 double termination_time = avg_value(_par_last_termination_times_ms);
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1292
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1293 double parallel_known_time = update_rs_time +
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1294 ext_root_scan_time +
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1295 mark_stack_scan_time +
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1296 scan_rs_time +
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1297 obj_copy_time +
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1298 termination_time;
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1299
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1300 double parallel_other_time = _cur_collection_par_time_ms - parallel_known_time;
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1301
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1302 PauseSummary* summary = _summary;
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1303
595 3698e8f47799 6804746: G1: guarantee(variance() > -1.0,"variance should be >= 0") (due to evacuation failure) tonyp parents: 547 diff changeset	1304 if (update_stats) {
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1305 _recent_rs_scan_times_ms->add(scan_rs_time);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1306 _recent_pause_times_ms->add(elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1307 _recent_rs_sizes->add(rs_size);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1308
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1309 MainBodySummary* body_summary = summary->main_body_summary();
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1310 guarantee(body_summary != NULL, "should not be null!");
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1311
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1312 if (_satb_drain_time_set)
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1313 body_summary->record_satb_drain_time_ms(_cur_satb_drain_time_ms);
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1314 else
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1315 body_summary->record_satb_drain_time_ms(0.0);
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1316
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1317 body_summary->record_ext_root_scan_time_ms(ext_root_scan_time);
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1318 body_summary->record_mark_stack_scan_time_ms(mark_stack_scan_time);
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1319 body_summary->record_update_rs_time_ms(update_rs_time);
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1320 body_summary->record_scan_rs_time_ms(scan_rs_time);
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1321 body_summary->record_obj_copy_time_ms(obj_copy_time);
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1322 if (parallel) {
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1323 body_summary->record_parallel_time_ms(_cur_collection_par_time_ms);
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1324 body_summary->record_clear_ct_time_ms(_cur_clear_ct_time_ms);
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1325 body_summary->record_termination_time_ms(termination_time);
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1326 body_summary->record_parallel_other_time_ms(parallel_other_time);
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1327 }
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1328 body_summary->record_mark_closure_time_ms(_mark_closure_time_ms);
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1329
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1330 // We exempt parallel collection from this check because Alloc Buffer
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1331 // fragmentation can produce negative collections. Same with evac
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1332 // failure.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1333 // Further, we're now always doing parallel collection. But I'm still
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1334 // leaving this here as a placeholder for a more precise assertion later.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1335 // (DLD, 10/05.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1336 assert((true \|\| parallel)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1337 \|\| _g1->evacuation_failed()
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1338 \|\| surviving_bytes <= _collection_set_bytes_used_before,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1339 "Or else negative collection!");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1340 _recent_CS_bytes_used_before->add(_collection_set_bytes_used_before);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1341 _recent_CS_bytes_surviving->add(surviving_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1343 // this is where we update the allocation rate of the application
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1344 double app_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1345 (_cur_collection_start_sec * 1000.0 - _prev_collection_pause_end_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1346 if (app_time_ms < MIN_TIMER_GRANULARITY) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1347 // This usually happens due to the timer not having the required
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1348 // granularity. Some Linuxes are the usual culprits.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1349 // We'll just set it to something (arbitrarily) small.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1350 app_time_ms = 1.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1351 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1352 size_t regions_allocated =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1353 (_region_num_young - _prev_region_num_young) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1354 (_region_num_tenured - _prev_region_num_tenured);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1355 double alloc_rate_ms = (double) regions_allocated / app_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1356 _alloc_rate_ms_seq->add(alloc_rate_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1357 _prev_region_num_young = _region_num_young;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1358 _prev_region_num_tenured = _region_num_tenured;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1359
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1360 double interval_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1361 (end_time_sec - _recent_prev_end_times_for_all_gcs_sec->oldest()) * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1362 update_recent_gc_times(end_time_sec, elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1363 _recent_avg_pause_time_ratio = _recent_gc_times_ms->sum()/interval_ms;
1086 89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1364 if (recent_avg_pause_time_ratio() < 0.0 \|\|
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1365 (recent_avg_pause_time_ratio() - 1.0 > 0.0)) {
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1366 #ifndef PRODUCT
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1367 // Dump info to allow post-facto debugging
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1368 gclog_or_tty->print_cr("recent_avg_pause_time_ratio() out of bounds");
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1369 gclog_or_tty->print_cr("-------------------------------------------");
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1370 gclog_or_tty->print_cr("Recent GC Times (ms):");
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1371 _recent_gc_times_ms->dump();
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1372 gclog_or_tty->print_cr("(End Time=%3.3f) Recent GC End Times (s):", end_time_sec);
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1373 _recent_prev_end_times_for_all_gcs_sec->dump();
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1374 gclog_or_tty->print_cr("GC = %3.3f, Interval = %3.3f, Ratio = %3.3f",
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1375 _recent_gc_times_ms->sum(), interval_ms, recent_avg_pause_time_ratio());
1087 23b9a8d315fc 6902701: G1: protect debugging code related to 6898948 with a debug flag ysr parents: 1086 diff changeset	1376 // In debug mode, terminate the JVM if the user wants to debug at this point.
23b9a8d315fc 6902701: G1: protect debugging code related to 6898948 with a debug flag ysr parents: 1086 diff changeset	1377 assert(!G1FailOnFPError, "Debugging data for CR 6898948 has been dumped above");
23b9a8d315fc 6902701: G1: protect debugging code related to 6898948 with a debug flag ysr parents: 1086 diff changeset	1378 #endif // !PRODUCT
23b9a8d315fc 6902701: G1: protect debugging code related to 6898948 with a debug flag ysr parents: 1086 diff changeset	1379 // Clip ratio between 0.0 and 1.0, and continue. This will be fixed in
23b9a8d315fc 6902701: G1: protect debugging code related to 6898948 with a debug flag ysr parents: 1086 diff changeset	1380 // CR 6902692 by redoing the manner in which the ratio is incrementally computed.
1086 89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1381 if (_recent_avg_pause_time_ratio < 0.0) {
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1382 _recent_avg_pause_time_ratio = 0.0;
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1383 } else {
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1384 assert(_recent_avg_pause_time_ratio - 1.0 > 0.0, "Ctl-point invariant");
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1385 _recent_avg_pause_time_ratio = 1.0;
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1386 }
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1387 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1388 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1389
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1390 if (G1PolicyVerbose > 1) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1391 gclog_or_tty->print_cr(" Recording collection pause(%d)", _n_pauses);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1392 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1393
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1394 if (G1PolicyVerbose > 1) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1395 gclog_or_tty->print_cr(" ET: %10.6f ms (avg: %10.6f ms)\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1396 " ET-RS: %10.6f ms (avg: %10.6f ms)\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1397 " \|RS\|: " SIZE_FORMAT,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1398 elapsed_ms, recent_avg_time_for_pauses_ms(),
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1399 scan_rs_time, recent_avg_time_for_rs_scan_ms(),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1400 rs_size);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1401
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1402 gclog_or_tty->print_cr(" Used at start: " SIZE_FORMAT"K"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1403 " At end " SIZE_FORMAT "K\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1404 " garbage : " SIZE_FORMAT "K"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1405 " of " SIZE_FORMAT "K\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1406 " survival : %6.2f%% (%6.2f%% avg)",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1407 _cur_collection_pause_used_at_start_bytes/K,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1408 _g1->used()/K, freed_bytes/K,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1409 _collection_set_bytes_used_before/K,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1410 survival_fraction*100.0,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1411 recent_avg_survival_fraction()*100.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1412 gclog_or_tty->print_cr(" Recent %% gc pause time: %6.2f",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1413 recent_avg_pause_time_ratio() * 100.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1414 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1415
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1416 double other_time_ms = elapsed_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1417
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1418 if (_satb_drain_time_set) {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1419 other_time_ms -= _cur_satb_drain_time_ms;
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1420 }
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1421
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1422 if (parallel) {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1423 other_time_ms -= _cur_collection_par_time_ms + _cur_clear_ct_time_ms;
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1424 } else {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1425 other_time_ms -=
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1426 update_rs_time +
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1427 ext_root_scan_time + mark_stack_scan_time +
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1428 scan_rs_time + obj_copy_time;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1429 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1430
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1431 if (PrintGCDetails) {
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1432 gclog_or_tty->print_cr("%s, %1.8lf secs]",
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1433 (last_pause_included_initial_mark) ? " (initial-mark)" : "",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1434 elapsed_ms / 1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1435
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1436 if (_satb_drain_time_set) {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1437 print_stats(1, "SATB Drain Time", _cur_satb_drain_time_ms);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1438 }
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1439 if (_last_satb_drain_processed_buffers >= 0) {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1440 print_stats(2, "Processed Buffers", _last_satb_drain_processed_buffers);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1441 }
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1442 if (parallel) {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1443 print_stats(1, "Parallel Time", _cur_collection_par_time_ms);
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1444 print_par_stats(2, "GC Worker Start Time", _par_last_gc_worker_start_times_ms);
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1445 print_par_stats(2, "Update RS", _par_last_update_rs_times_ms);
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1446 print_par_sizes(3, "Processed Buffers", _par_last_update_rs_processed_buffers);
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1447 print_par_stats(2, "Ext Root Scanning", _par_last_ext_root_scan_times_ms);
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1448 print_par_stats(2, "Mark Stack Scanning", _par_last_mark_stack_scan_times_ms);
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1449 print_par_stats(2, "Scan RS", _par_last_scan_rs_times_ms);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1450 print_par_stats(2, "Object Copy", _par_last_obj_copy_times_ms);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1451 print_par_stats(2, "Termination", _par_last_termination_times_ms);
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1452 print_par_sizes(3, "Termination Attempts", _par_last_termination_attempts);
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1453 print_par_stats(2, "GC Worker End Time", _par_last_gc_worker_end_times_ms);
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1454
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1455 for (int i = 0; i < _parallel_gc_threads; i++) {
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1456 _par_last_gc_worker_times_ms[i] = _par_last_gc_worker_end_times_ms[i] - _par_last_gc_worker_start_times_ms[i];
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1457 }
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1458 print_par_stats(2, "GC Worker Times", _par_last_gc_worker_times_ms);
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1459
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1460 print_stats(2, "Parallel Other", parallel_other_time);
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1461 print_stats(1, "Clear CT", _cur_clear_ct_time_ms);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1462 } else {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1463 print_stats(1, "Update RS", update_rs_time);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1464 print_stats(2, "Processed Buffers",
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1465 (int)update_rs_processed_buffers);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1466 print_stats(1, "Ext Root Scanning", ext_root_scan_time);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1467 print_stats(1, "Mark Stack Scanning", mark_stack_scan_time);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1468 print_stats(1, "Scan RS", scan_rs_time);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1469 print_stats(1, "Object Copying", obj_copy_time);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1470 }
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1471 #ifndef PRODUCT
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1472 print_stats(1, "Cur Clear CC", _cur_clear_cc_time_ms);
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1473 print_stats(1, "Cum Clear CC", _cum_clear_cc_time_ms);
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1474 print_stats(1, "Min Clear CC", _min_clear_cc_time_ms);
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1475 print_stats(1, "Max Clear CC", _max_clear_cc_time_ms);
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1476 if (_num_cc_clears > 0) {
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1477 print_stats(1, "Avg Clear CC", _cum_clear_cc_time_ms / ((double)_num_cc_clears));
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1478 }
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1479 #endif
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1480 print_stats(1, "Other", other_time_ms);
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1481 print_stats(2, "Choose CSet", _recorded_young_cset_choice_time_ms);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1482
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1483 for (int i = 0; i < _aux_num; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1484 if (_cur_aux_times_set[i]) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1485 char buffer[96];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1486 sprintf(buffer, "Aux%d", i);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1487 print_stats(1, buffer, _cur_aux_times_ms[i]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1488 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1489 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1490 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1491
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1492 _all_pause_times_ms->add(elapsed_ms);
648 2314b7336582 6820321: G1: Error: guarantee(check_nums(total, n, parts), "all seq lengths should match") tonyp parents: 640 diff changeset	1493 if (update_stats) {
2314b7336582 6820321: G1: Error: guarantee(check_nums(total, n, parts), "all seq lengths should match") tonyp parents: 640 diff changeset	1494 summary->record_total_time_ms(elapsed_ms);
2314b7336582 6820321: G1: Error: guarantee(check_nums(total, n, parts), "all seq lengths should match") tonyp parents: 640 diff changeset	1495 summary->record_other_time_ms(other_time_ms);
2314b7336582 6820321: G1: Error: guarantee(check_nums(total, n, parts), "all seq lengths should match") tonyp parents: 640 diff changeset	1496 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1497 for (int i = 0; i < _aux_num; ++i)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1498 if (_cur_aux_times_set[i])
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1499 _all_aux_times_ms[i].add(_cur_aux_times_ms[i]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1500
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1501 // Reset marks-between-pauses counter.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1502 _n_marks_since_last_pause = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1503
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1504 // Update the efficiency-since-mark vars.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1505 double proc_ms = elapsed_ms * (double) _parallel_gc_threads;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1506 if (elapsed_ms < MIN_TIMER_GRANULARITY) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1507 // This usually happens due to the timer not having the required
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1508 // granularity. Some Linuxes are the usual culprits.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1509 // We'll just set it to something (arbitrarily) small.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1510 proc_ms = 1.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1511 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1512 double cur_efficiency = (double) freed_bytes / proc_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1513
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1514 bool new_in_marking_window = _in_marking_window;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1515 bool new_in_marking_window_im = false;
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1516 if (during_initial_mark_pause()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1517 new_in_marking_window = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1518 new_in_marking_window_im = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1519 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1520
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1521 if (_last_full_young_gc) {
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1522 ergo_verbose2(ErgoPartiallyYoungGCs,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1523 "start partially-young GCs",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1524 ergo_format_byte_perc("known garbage"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1525 _known_garbage_bytes, _known_garbage_ratio * 100.0);
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1526 set_full_young_gcs(false);
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1527 _last_full_young_gc = false;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1528 }
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1529
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1530 if ( !_last_young_gc_full ) {
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1531 if (_should_revert_to_full_young_gcs) {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1532 ergo_verbose2(ErgoPartiallyYoungGCs,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1533 "end partially-young GCs",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1534 ergo_format_reason("partially-young GCs end requested")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1535 ergo_format_byte_perc("known garbage"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1536 _known_garbage_bytes, _known_garbage_ratio * 100.0);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1537 set_full_young_gcs(true);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1538 } else if (_known_garbage_ratio < 0.05) {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1539 ergo_verbose3(ErgoPartiallyYoungGCs,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1540 "end partially-young GCs",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1541 ergo_format_reason("known garbage percent lower than threshold")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1542 ergo_format_byte_perc("known garbage")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1543 ergo_format_perc("threshold"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1544 _known_garbage_bytes, _known_garbage_ratio * 100.0,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1545 0.05 * 100.0);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1546 set_full_young_gcs(true);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1547 } else if (adaptive_young_list_length() &&
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1548 (get_gc_eff_factor() * cur_efficiency < predict_young_gc_eff())) {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1549 ergo_verbose5(ErgoPartiallyYoungGCs,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1550 "end partially-young GCs",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1551 ergo_format_reason("current GC efficiency lower than "
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1552 "predicted fully-young GC efficiency")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1553 ergo_format_double("GC efficiency factor")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1554 ergo_format_double("current GC efficiency")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1555 ergo_format_double("predicted fully-young GC efficiency")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1556 ergo_format_byte_perc("known garbage"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1557 get_gc_eff_factor(), cur_efficiency,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1558 predict_young_gc_eff(),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1559 _known_garbage_bytes, _known_garbage_ratio * 100.0);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1560 set_full_young_gcs(true);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1561 }
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1562 }
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1563 _should_revert_to_full_young_gcs = false;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1564
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1565 if (_last_young_gc_full && !_during_marking) {
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1566 _young_gc_eff_seq->add(cur_efficiency);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1567 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1568
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1569 _short_lived_surv_rate_group->start_adding_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1570 // do that for any other surv rate groupsx
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1571
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1572 // <NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1573
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	1574 if (update_stats) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1575 double pause_time_ms = elapsed_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1576
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1577 size_t diff = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1578 if (_max_pending_cards >= _pending_cards)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1579 diff = _max_pending_cards - _pending_cards;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1580 _pending_card_diff_seq->add((double) diff);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1581
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1582 double cost_per_card_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1583 if (_pending_cards > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1584 cost_per_card_ms = update_rs_time / (double) _pending_cards;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1585 _cost_per_card_ms_seq->add(cost_per_card_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1586 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1587
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1588 size_t cards_scanned = _g1->cards_scanned();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1589
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1590 double cost_per_entry_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1591 if (cards_scanned > 10) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1592 cost_per_entry_ms = scan_rs_time / (double) cards_scanned;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1593 if (_last_young_gc_full)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1594 _cost_per_entry_ms_seq->add(cost_per_entry_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1595 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1596 _partially_young_cost_per_entry_ms_seq->add(cost_per_entry_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1597 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1598
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1599 if (_max_rs_lengths > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1600 double cards_per_entry_ratio =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1601 (double) cards_scanned / (double) _max_rs_lengths;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1602 if (_last_young_gc_full)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1603 _fully_young_cards_per_entry_ratio_seq->add(cards_per_entry_ratio);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1604 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1605 _partially_young_cards_per_entry_ratio_seq->add(cards_per_entry_ratio);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1606 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1607
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1608 size_t rs_length_diff = _max_rs_lengths - _recorded_rs_lengths;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1609 if (rs_length_diff >= 0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1610 _rs_length_diff_seq->add((double) rs_length_diff);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1611
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1612 size_t copied_bytes = surviving_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1613 double cost_per_byte_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1614 if (copied_bytes > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1615 cost_per_byte_ms = obj_copy_time / (double) copied_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1616 if (_in_marking_window)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1617 _cost_per_byte_ms_during_cm_seq->add(cost_per_byte_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1618 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1619 _cost_per_byte_ms_seq->add(cost_per_byte_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1620 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1621
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1622 double all_other_time_ms = pause_time_ms -
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1623 (update_rs_time + scan_rs_time + obj_copy_time +
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1624 _mark_closure_time_ms + termination_time);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1625
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1626 double young_other_time_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1627 if (_recorded_young_regions > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1628 young_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1629 _recorded_young_cset_choice_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1630 _recorded_young_free_cset_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1631 _young_other_cost_per_region_ms_seq->add(young_other_time_ms /
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1632 (double) _recorded_young_regions);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1633 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1634 double non_young_other_time_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1635 if (_recorded_non_young_regions > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1636 non_young_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1637 _recorded_non_young_cset_choice_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1638 _recorded_non_young_free_cset_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1639
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1640 _non_young_other_cost_per_region_ms_seq->add(non_young_other_time_ms /
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1641 (double) _recorded_non_young_regions);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1642 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1643
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1644 double constant_other_time_ms = all_other_time_ms -
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1645 (young_other_time_ms + non_young_other_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1646 _constant_other_time_ms_seq->add(constant_other_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1647
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1648 double survival_ratio = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1649 if (_bytes_in_collection_set_before_gc > 0) {
3830 f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	1650 survival_ratio = (double) _bytes_copied_during_gc /
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	1651 (double) _bytes_in_collection_set_before_gc;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1652 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1653
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1654 _pending_cards_seq->add((double) _pending_cards);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1655 _scanned_cards_seq->add((double) cards_scanned);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1656 _rs_lengths_seq->add((double) _max_rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1657
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1658 double expensive_region_limit_ms =
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1659 (double) MaxGCPauseMillis - predict_constant_other_time_ms();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1660 if (expensive_region_limit_ms < 0.0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1661 // this means that the other time was predicted to be longer than
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1662 // than the max pause time
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1663 expensive_region_limit_ms = (double) MaxGCPauseMillis;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1664 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1665 _expensive_region_limit_ms = expensive_region_limit_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1666
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1667 if (PREDICTIONS_VERBOSE) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1668 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1669 gclog_or_tty->print_cr("PREDICTIONS %1.4lf %d "
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1670 "REGIONS %d %d %d "
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1671 "PENDING_CARDS %d %d "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1672 "CARDS_SCANNED %d %d "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1673 "RS_LENGTHS %d %d "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1674 "RS_UPDATE %1.6lf %1.6lf RS_SCAN %1.6lf %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1675 "SURVIVAL_RATIO %1.6lf %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1676 "OBJECT_COPY %1.6lf %1.6lf OTHER_CONSTANT %1.6lf %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1677 "OTHER_YOUNG %1.6lf %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1678 "OTHER_NON_YOUNG %1.6lf %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1679 "VTIME_DIFF %1.6lf TERMINATION %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1680 "ELAPSED %1.6lf %1.6lf ",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1681 _cur_collection_start_sec,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1682 (!_last_young_gc_full) ? 2 :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1683 (last_pause_included_initial_mark) ? 1 : 0,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1684 _recorded_region_num,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1685 _recorded_young_regions,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1686 _recorded_non_young_regions,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1687 _predicted_pending_cards, _pending_cards,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1688 _predicted_cards_scanned, cards_scanned,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1689 _predicted_rs_lengths, _max_rs_lengths,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1690 _predicted_rs_update_time_ms, update_rs_time,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1691 _predicted_rs_scan_time_ms, scan_rs_time,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1692 _predicted_survival_ratio, survival_ratio,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1693 _predicted_object_copy_time_ms, obj_copy_time,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1694 _predicted_constant_other_time_ms, constant_other_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1695 _predicted_young_other_time_ms, young_other_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1696 _predicted_non_young_other_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1697 non_young_other_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1698 _vtime_diff_ms, termination_time,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1699 _predicted_pause_time_ms, elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1700 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1701
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1702 if (G1PolicyVerbose > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1703 gclog_or_tty->print_cr("Pause Time, predicted: %1.4lfms (predicted %s), actual: %1.4lfms",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1704 _predicted_pause_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1705 (_within_target) ? "within" : "outside",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1706 elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1707 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1708
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1709 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1710
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1711 _in_marking_window = new_in_marking_window;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1712 _in_marking_window_im = new_in_marking_window_im;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1713 _free_regions_at_end_of_collection = _g1->free_regions();
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	1714 update_young_list_target_length();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1715
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1716 // Note that _mmu_tracker->max_gc_time() returns the time in seconds.
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	1717 double update_rs_time_goal_ms = _mmu_tracker->max_gc_time() * MILLIUNITS * G1RSetUpdatingPauseTimePercent / 100.0;
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1718 adjust_concurrent_refinement(update_rs_time, update_rs_processed_buffers, update_rs_time_goal_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1719 // </NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1720 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1721
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1722 #define EXT_SIZE_FORMAT "%d%s"
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1723 #define EXT_SIZE_PARAMS(bytes) \
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1724 byte_size_in_proper_unit((bytes)), \
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1725 proper_unit_for_byte_size((bytes))
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1726
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1727 void G1CollectorPolicy::print_heap_transition() {
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1728 if (PrintGCDetails) {
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1729 YoungList* young_list = _g1->young_list();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1730 size_t eden_bytes = young_list->eden_used_bytes();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1731 size_t survivor_bytes = young_list->survivor_used_bytes();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1732 size_t used_before_gc = _cur_collection_pause_used_at_start_bytes;
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1733 size_t used = _g1->used();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1734 size_t capacity = _g1->capacity();
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1735 size_t eden_capacity =
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1736 (_young_list_target_length * HeapRegion::GrainBytes) - survivor_bytes;
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1737
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1738 gclog_or_tty->print_cr(
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1739 " [Eden: "EXT_SIZE_FORMAT"("EXT_SIZE_FORMAT")->"EXT_SIZE_FORMAT"("EXT_SIZE_FORMAT") "
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1740 "Survivors: "EXT_SIZE_FORMAT"->"EXT_SIZE_FORMAT" "
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1741 "Heap: "EXT_SIZE_FORMAT"("EXT_SIZE_FORMAT")->"
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1742 EXT_SIZE_FORMAT"("EXT_SIZE_FORMAT")]",
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1743 EXT_SIZE_PARAMS(_eden_bytes_before_gc),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1744 EXT_SIZE_PARAMS(_prev_eden_capacity),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1745 EXT_SIZE_PARAMS(eden_bytes),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1746 EXT_SIZE_PARAMS(eden_capacity),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1747 EXT_SIZE_PARAMS(_survivor_bytes_before_gc),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1748 EXT_SIZE_PARAMS(survivor_bytes),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1749 EXT_SIZE_PARAMS(used_before_gc),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1750 EXT_SIZE_PARAMS(_capacity_before_gc),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1751 EXT_SIZE_PARAMS(used),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1752 EXT_SIZE_PARAMS(capacity));
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1753
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1754 _prev_eden_capacity = eden_capacity;
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1755 } else if (PrintGC) {
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1756 _g1->print_size_transition(gclog_or_tty,
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1757 _cur_collection_pause_used_at_start_bytes,
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1758 _g1->used(), _g1->capacity());
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1759 }
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1760 }
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1761
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1762 // <NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1763
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1764 void G1CollectorPolicy::adjust_concurrent_refinement(double update_rs_time,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1765 double update_rs_processed_buffers,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1766 double goal_ms) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1767 DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1768 ConcurrentG1Refine *cg1r = G1CollectedHeap::heap()->concurrent_g1_refine();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1769
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	1770 if (G1UseAdaptiveConcRefinement) {
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1771 const int k_gy = 3, k_gr = 6;
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1772 const double inc_k = 1.1, dec_k = 0.9;
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1773
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1774 int g = cg1r->green_zone();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1775 if (update_rs_time > goal_ms) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1776 g = (int)(g * dec_k); // Can become 0, that's OK. That would mean a mutator-only processing.
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1777 } else {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1778 if (update_rs_time < goal_ms && update_rs_processed_buffers > g) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1779 g = (int)MAX2(g * inc_k, g + 1.0);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1780 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1781 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1782 // Change the refinement threads params
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1783 cg1r->set_green_zone(g);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1784 cg1r->set_yellow_zone(g * k_gy);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1785 cg1r->set_red_zone(g * k_gr);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1786 cg1r->reinitialize_threads();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1787
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1788 int processing_threshold_delta = MAX2((int)(cg1r->green_zone() * sigma()), 1);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1789 int processing_threshold = MIN2(cg1r->green_zone() + processing_threshold_delta,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1790 cg1r->yellow_zone());
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1791 // Change the barrier params
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1792 dcqs.set_process_completed_threshold(processing_threshold);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1793 dcqs.set_max_completed_queue(cg1r->red_zone());
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1794 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1795
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1796 int curr_queue_size = dcqs.completed_buffers_num();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1797 if (curr_queue_size >= cg1r->yellow_zone()) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1798 dcqs.set_completed_queue_padding(curr_queue_size);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1799 } else {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1800 dcqs.set_completed_queue_padding(0);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1801 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1802 dcqs.notify_if_necessary();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1803 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1804
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1805 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1806 G1CollectorPolicy::
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1807 predict_young_collection_elapsed_time_ms(size_t adjustment) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1808 guarantee( adjustment == 0 \|\| adjustment == 1, "invariant" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1809
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1810 G1CollectedHeap* g1h = G1CollectedHeap::heap();
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1811 size_t young_num = g1h->young_list()->length();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1812 if (young_num == 0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1813 return 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1814
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1815 young_num += adjustment;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1816 size_t pending_cards = predict_pending_cards();
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1817 size_t rs_lengths = g1h->young_list()->sampled_rs_lengths() +
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1818 predict_rs_length_diff();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1819 size_t card_num;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1820 if (full_young_gcs())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1821 card_num = predict_young_card_num(rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1822 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1823 card_num = predict_non_young_card_num(rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1824 size_t young_byte_size = young_num * HeapRegion::GrainBytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1825 double accum_yg_surv_rate =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1826 _short_lived_surv_rate_group->accum_surv_rate(adjustment);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1827
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1828 size_t bytes_to_copy =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1829 (size_t) (accum_yg_surv_rate * (double) HeapRegion::GrainBytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1830
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1831 return
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1832 predict_rs_update_time_ms(pending_cards) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1833 predict_rs_scan_time_ms(card_num) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1834 predict_object_copy_time_ms(bytes_to_copy) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1835 predict_young_other_time_ms(young_num) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1836 predict_constant_other_time_ms();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1837 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1838
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1839 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1840 G1CollectorPolicy::predict_base_elapsed_time_ms(size_t pending_cards) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1841 size_t rs_length = predict_rs_length_diff();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1842 size_t card_num;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1843 if (full_young_gcs())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1844 card_num = predict_young_card_num(rs_length);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1845 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1846 card_num = predict_non_young_card_num(rs_length);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1847 return predict_base_elapsed_time_ms(pending_cards, card_num);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1848 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1849
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1850 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1851 G1CollectorPolicy::predict_base_elapsed_time_ms(size_t pending_cards,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1852 size_t scanned_cards) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1853 return
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1854 predict_rs_update_time_ms(pending_cards) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1855 predict_rs_scan_time_ms(scanned_cards) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1856 predict_constant_other_time_ms();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1857 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1858
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1859 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1860 G1CollectorPolicy::predict_region_elapsed_time_ms(HeapRegion* hr,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1861 bool young) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1862 size_t rs_length = hr->rem_set()->occupied();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1863 size_t card_num;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1864 if (full_young_gcs())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1865 card_num = predict_young_card_num(rs_length);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1866 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1867 card_num = predict_non_young_card_num(rs_length);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1868 size_t bytes_to_copy = predict_bytes_to_copy(hr);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1869
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1870 double region_elapsed_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1871 predict_rs_scan_time_ms(card_num) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1872 predict_object_copy_time_ms(bytes_to_copy);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1873
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1874 if (young)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1875 region_elapsed_time_ms += predict_young_other_time_ms(1);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1876 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1877 region_elapsed_time_ms += predict_non_young_other_time_ms(1);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1878
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1879 return region_elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1880 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1881
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1882 size_t
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1883 G1CollectorPolicy::predict_bytes_to_copy(HeapRegion* hr) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1884 size_t bytes_to_copy;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1885 if (hr->is_marked())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1886 bytes_to_copy = hr->max_live_bytes();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1887 else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1888 guarantee( hr->is_young() && hr->age_in_surv_rate_group() != -1,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1889 "invariant" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1890 int age = hr->age_in_surv_rate_group();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1891 double yg_surv_rate = predict_yg_surv_rate(age, hr->surv_rate_group());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1892 bytes_to_copy = (size_t) ((double) hr->used() * yg_surv_rate);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1893 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1894
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1895 return bytes_to_copy;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1896 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1897
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1898 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1899 G1CollectorPolicy::start_recording_regions() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1900 _recorded_rs_lengths = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1901 _recorded_young_regions = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1902 _recorded_non_young_regions = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1903
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1904 #if PREDICTIONS_VERBOSE
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1905 _recorded_marked_bytes = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1906 _recorded_young_bytes = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1907 _predicted_bytes_to_copy = 0;
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1908 _predicted_rs_lengths = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1909 _predicted_cards_scanned = 0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1910 #endif // PREDICTIONS_VERBOSE
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1911 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1912
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1913 void
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1914 G1CollectorPolicy::record_cset_region_info(HeapRegion* hr, bool young) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1915 #if PREDICTIONS_VERBOSE
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1916 if (!young) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1917 _recorded_marked_bytes += hr->max_live_bytes();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1918 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1919 _predicted_bytes_to_copy += predict_bytes_to_copy(hr);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1920 #endif // PREDICTIONS_VERBOSE
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1921
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1922 size_t rs_length = hr->rem_set()->occupied();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1923 _recorded_rs_lengths += rs_length;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1924 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1925
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1926 void
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1927 G1CollectorPolicy::record_non_young_cset_region(HeapRegion* hr) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1928 assert(!hr->is_young(), "should not call this");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1929 ++_recorded_non_young_regions;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1930 record_cset_region_info(hr, false);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1931 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1932
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1933 void
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1934 G1CollectorPolicy::set_recorded_young_regions(size_t n_regions) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1935 _recorded_young_regions = n_regions;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1936 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1937
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1938 void G1CollectorPolicy::set_recorded_young_bytes(size_t bytes) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1939 #if PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1940 _recorded_young_bytes = bytes;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1941 #endif // PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1942 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1943
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1944 void G1CollectorPolicy::set_recorded_rs_lengths(size_t rs_lengths) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1945 _recorded_rs_lengths = rs_lengths;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1946 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1947
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1948 void G1CollectorPolicy::set_predicted_bytes_to_copy(size_t bytes) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1949 _predicted_bytes_to_copy = bytes;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1950 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1951
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1952 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1953 G1CollectorPolicy::end_recording_regions() {
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1954 // The _predicted_pause_time_ms field is referenced in code
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1955 // not under PREDICTIONS_VERBOSE. Let's initialize it.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1956 _predicted_pause_time_ms = -1.0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1957
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1958 #if PREDICTIONS_VERBOSE
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1959 _predicted_pending_cards = predict_pending_cards();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1960 _predicted_rs_lengths = _recorded_rs_lengths + predict_rs_length_diff();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1961 if (full_young_gcs())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1962 _predicted_cards_scanned += predict_young_card_num(_predicted_rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1963 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1964 _predicted_cards_scanned +=
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1965 predict_non_young_card_num(_predicted_rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1966 _recorded_region_num = _recorded_young_regions + _recorded_non_young_regions;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1967
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1968 _predicted_rs_update_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1969 predict_rs_update_time_ms(_g1->pending_card_num());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1970 _predicted_rs_scan_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1971 predict_rs_scan_time_ms(_predicted_cards_scanned);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1972 _predicted_object_copy_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1973 predict_object_copy_time_ms(_predicted_bytes_to_copy);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1974 _predicted_constant_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1975 predict_constant_other_time_ms();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1976 _predicted_young_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1977 predict_young_other_time_ms(_recorded_young_regions);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1978 _predicted_non_young_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1979 predict_non_young_other_time_ms(_recorded_non_young_regions);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1980
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1981 _predicted_pause_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1982 _predicted_rs_update_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1983 _predicted_rs_scan_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1984 _predicted_object_copy_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1985 _predicted_constant_other_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1986 _predicted_young_other_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1987 _predicted_non_young_other_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1988 #endif // PREDICTIONS_VERBOSE
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1989 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1990
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1991 void G1CollectorPolicy::check_if_region_is_too_expensive(double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1992 predicted_time_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1993 // I don't think we need to do this when in young GC mode since
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1994 // marking will be initiated next time we hit the soft limit anyway...
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1995 if (predicted_time_ms > _expensive_region_limit_ms) {
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1996 ergo_verbose2(ErgoPartiallyYoungGCs,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1997 "request partially-young GCs end",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1998 ergo_format_reason("predicted region time higher than threshold")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1999 ergo_format_ms("predicted region time")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2000 ergo_format_ms("threshold"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2001 predicted_time_ms, _expensive_region_limit_ms);
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2002 // no point in doing another partial one
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2003 _should_revert_to_full_young_gcs = true;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2004 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2005 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2006
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2007 // </NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2008
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2009
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2010 void G1CollectorPolicy::update_recent_gc_times(double end_time_sec,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2011 double elapsed_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2012 _recent_gc_times_ms->add(elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2013 _recent_prev_end_times_for_all_gcs_sec->add(end_time_sec);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2014 _prev_collection_pause_end_ms = end_time_sec * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2015 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2016
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2017 double G1CollectorPolicy::recent_avg_time_for_pauses_ms() {
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	2018 if (_recent_pause_times_ms->num() == 0) {
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	2019 return (double) MaxGCPauseMillis;
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	2020 }
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	2021 return _recent_pause_times_ms->avg();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2022 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2023
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	2024 double G1CollectorPolicy::recent_avg_time_for_rs_scan_ms() {
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	2025 if (_recent_rs_scan_times_ms->num() == 0) {
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2026 return (double)MaxGCPauseMillis/3.0;
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	2027 }
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	2028 return _recent_rs_scan_times_ms->avg();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2029 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2030
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2031 int G1CollectorPolicy::number_of_recent_gcs() {
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	2032 assert(_recent_rs_scan_times_ms->num() ==
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2033 _recent_pause_times_ms->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2034 assert(_recent_pause_times_ms->num() ==
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2035 _recent_CS_bytes_used_before->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2036 assert(_recent_CS_bytes_used_before->num() ==
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2037 _recent_CS_bytes_surviving->num(), "Sequence out of sync");
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	2038
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2039 return _recent_pause_times_ms->num();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2040 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2041
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2042 double G1CollectorPolicy::recent_avg_survival_fraction() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2043 return recent_avg_survival_fraction_work(_recent_CS_bytes_surviving,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2044 _recent_CS_bytes_used_before);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2045 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2046
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2047 double G1CollectorPolicy::last_survival_fraction() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2048 return last_survival_fraction_work(_recent_CS_bytes_surviving,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2049 _recent_CS_bytes_used_before);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2050 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2051
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2052 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2053 G1CollectorPolicy::recent_avg_survival_fraction_work(TruncatedSeq* surviving,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2054 TruncatedSeq* before) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2055 assert(surviving->num() == before->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2056 if (before->sum() > 0.0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2057 double recent_survival_rate = surviving->sum() / before->sum();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2058 // We exempt parallel collection from this check because Alloc Buffer
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2059 // fragmentation can produce negative collections.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2060 // Further, we're now always doing parallel collection. But I'm still
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2061 // leaving this here as a placeholder for a more precise assertion later.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2062 // (DLD, 10/05.)
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	2063 assert((true \|\| G1CollectedHeap::use_parallel_gc_threads()) \|\|
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2064 _g1->evacuation_failed() \|\|
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2065 recent_survival_rate <= 1.0, "Or bad frac");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2066 return recent_survival_rate;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2067 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2068 return 1.0; // Be conservative.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2069 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2070 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2071
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2072 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2073 G1CollectorPolicy::last_survival_fraction_work(TruncatedSeq* surviving,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2074 TruncatedSeq* before) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2075 assert(surviving->num() == before->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2076 if (surviving->num() > 0 && before->last() > 0.0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2077 double last_survival_rate = surviving->last() / before->last();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2078 // We exempt parallel collection from this check because Alloc Buffer
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2079 // fragmentation can produce negative collections.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2080 // Further, we're now always doing parallel collection. But I'm still
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2081 // leaving this here as a placeholder for a more precise assertion later.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2082 // (DLD, 10/05.)
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	2083 assert((true \|\| G1CollectedHeap::use_parallel_gc_threads()) \|\|
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2084 last_survival_rate <= 1.0, "Or bad frac");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2085 return last_survival_rate;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2086 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2087 return 1.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2088 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2089 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2090
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2091 static const int survival_min_obs = 5;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2092 static double survival_min_obs_limits[] = { 0.9, 0.7, 0.5, 0.3, 0.1 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2093 static const double min_survival_rate = 0.1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2094
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2095 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2096 G1CollectorPolicy::conservative_avg_survival_fraction_work(double avg,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2097 double latest) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2098 double res = avg;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2099 if (number_of_recent_gcs() < survival_min_obs) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2100 res = MAX2(res, survival_min_obs_limits[number_of_recent_gcs()]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2101 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2102 res = MAX2(res, latest);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2103 res = MAX2(res, min_survival_rate);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2104 // In the parallel case, LAB fragmentation can produce "negative
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2105 // collections"; so can evac failure. Cap at 1.0
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2106 res = MIN2(res, 1.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2107 return res;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2108 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2109
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2110 size_t G1CollectorPolicy::expansion_amount() {
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2111 double recent_gc_overhead = recent_avg_pause_time_ratio() * 100.0;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2112 double threshold = _gc_overhead_perc;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2113 if (recent_gc_overhead > threshold) {
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2114 // We will double the existing space, or take
20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2115 // G1ExpandByPercentOfAvailable % of the available expansion
20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2116 // space, whichever is smaller, bounded below by a minimum
20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2117 // expansion (unless that's all that's left.)
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2118 const size_t min_expand_bytes = 1*M;
2188 c33825b68624 6923430: G1: assert(res != 0,"This should have worked.") johnc parents: 2152 diff changeset	2119 size_t reserved_bytes = _g1->max_capacity();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2120 size_t committed_bytes = _g1->capacity();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2121 size_t uncommitted_bytes = reserved_bytes - committed_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2122 size_t expand_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2123 size_t expand_bytes_via_pct =
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2124 uncommitted_bytes * G1ExpandByPercentOfAvailable / 100;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2125 expand_bytes = MIN2(expand_bytes_via_pct, committed_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2126 expand_bytes = MAX2(expand_bytes, min_expand_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2127 expand_bytes = MIN2(expand_bytes, uncommitted_bytes);
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2128
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2129 ergo_verbose5(ErgoHeapSizing,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2130 "attempt heap expansion",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2131 ergo_format_reason("recent GC overhead higher than "
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2132 "threshold after GC")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2133 ergo_format_perc("recent GC overhead")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2134 ergo_format_perc("threshold")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2135 ergo_format_byte("uncommitted")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2136 ergo_format_byte_perc("calculated expansion amount"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2137 recent_gc_overhead, threshold,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2138 uncommitted_bytes,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2139 expand_bytes_via_pct, (double) G1ExpandByPercentOfAvailable);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2140
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2141 return expand_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2142 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2143 return 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2144 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2145 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2146
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2147 void G1CollectorPolicy::note_start_of_mark_thread() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2148 _mark_thread_startup_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2149 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2150
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2151 class CountCSClosure: public HeapRegionClosure {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2152 G1CollectorPolicy* _g1_policy;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2153 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2154 CountCSClosure(G1CollectorPolicy* g1_policy) :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2155 _g1_policy(g1_policy) {}
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2156 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2157 _g1_policy->_bytes_in_collection_set_before_gc += r->used();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2158 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2159 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2160 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2161
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2162 void G1CollectorPolicy::count_CS_bytes_used() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2163 CountCSClosure cs_closure(this);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2164 _g1->collection_set_iterate(&cs_closure);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2165 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2166
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2167 void G1CollectorPolicy::print_summary (int level,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2168 const char* str,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2169 NumberSeq* seq) const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2170 double sum = seq->sum();
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2171 LineBuffer(level + 1).append_and_print_cr("%-24s = %8.2lf s (avg = %8.2lf ms)",
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2172 str, sum / 1000.0, seq->avg());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2173 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2174
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2175 void G1CollectorPolicy::print_summary_sd (int level,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2176 const char* str,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2177 NumberSeq* seq) const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2178 print_summary(level, str, seq);
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2179 LineBuffer(level + 6).append_and_print_cr("(num = %5d, std dev = %8.2lf ms, max = %8.2lf ms)",
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2180 seq->num(), seq->sd(), seq->maximum());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2181 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2182
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2183 void G1CollectorPolicy::check_other_times(int level,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2184 NumberSeq* other_times_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2185 NumberSeq* calc_other_times_ms) const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2186 bool should_print = false;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2187 LineBuffer buf(level + 2);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2188
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2189 double max_sum = MAX2(fabs(other_times_ms->sum()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2190 fabs(calc_other_times_ms->sum()));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2191 double min_sum = MIN2(fabs(other_times_ms->sum()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2192 fabs(calc_other_times_ms->sum()));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2193 double sum_ratio = max_sum / min_sum;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2194 if (sum_ratio > 1.1) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2195 should_print = true;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2196 buf.append_and_print_cr("## CALCULATED OTHER SUM DOESN'T MATCH RECORDED ###");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2197 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2198
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2199 double max_avg = MAX2(fabs(other_times_ms->avg()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2200 fabs(calc_other_times_ms->avg()));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2201 double min_avg = MIN2(fabs(other_times_ms->avg()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2202 fabs(calc_other_times_ms->avg()));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2203 double avg_ratio = max_avg / min_avg;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2204 if (avg_ratio > 1.1) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2205 should_print = true;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2206 buf.append_and_print_cr("## CALCULATED OTHER AVG DOESN'T MATCH RECORDED ###");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2207 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2208
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2209 if (other_times_ms->sum() < -0.01) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2210 buf.append_and_print_cr("## RECORDED OTHER SUM IS NEGATIVE ###");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2211 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2212
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2213 if (other_times_ms->avg() < -0.01) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2214 buf.append_and_print_cr("## RECORDED OTHER AVG IS NEGATIVE ###");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2215 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2216
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2217 if (calc_other_times_ms->sum() < -0.01) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2218 should_print = true;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2219 buf.append_and_print_cr("## CALCULATED OTHER SUM IS NEGATIVE ###");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2220 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2221
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2222 if (calc_other_times_ms->avg() < -0.01) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2223 should_print = true;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2224 buf.append_and_print_cr("## CALCULATED OTHER AVG IS NEGATIVE ###");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2225 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2226
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2227 if (should_print)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2228 print_summary(level, "Other(Calc)", calc_other_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2229 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2230
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2231 void G1CollectorPolicy::print_summary(PauseSummary* summary) const {
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	2232 bool parallel = G1CollectedHeap::use_parallel_gc_threads();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2233 MainBodySummary* body_summary = summary->main_body_summary();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2234 if (summary->get_total_seq()->num() > 0) {
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2235 print_summary_sd(0, "Evacuation Pauses", summary->get_total_seq());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2236 if (body_summary != NULL) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2237 print_summary(1, "SATB Drain", body_summary->get_satb_drain_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2238 if (parallel) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2239 print_summary(1, "Parallel Time", body_summary->get_parallel_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2240 print_summary(2, "Update RS", body_summary->get_update_rs_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2241 print_summary(2, "Ext Root Scanning",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2242 body_summary->get_ext_root_scan_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2243 print_summary(2, "Mark Stack Scanning",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2244 body_summary->get_mark_stack_scan_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2245 print_summary(2, "Scan RS", body_summary->get_scan_rs_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2246 print_summary(2, "Object Copy", body_summary->get_obj_copy_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2247 print_summary(2, "Termination", body_summary->get_termination_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2248 print_summary(2, "Other", body_summary->get_parallel_other_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2249 {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2250 NumberSeq* other_parts[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2251 body_summary->get_update_rs_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2252 body_summary->get_ext_root_scan_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2253 body_summary->get_mark_stack_scan_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2254 body_summary->get_scan_rs_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2255 body_summary->get_obj_copy_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2256 body_summary->get_termination_seq()
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2257 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2258 NumberSeq calc_other_times_ms(body_summary->get_parallel_seq(),
1779 6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2259 6, other_parts);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2260 check_other_times(2, body_summary->get_parallel_other_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2261 &calc_other_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2262 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2263 print_summary(1, "Mark Closure", body_summary->get_mark_closure_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2264 print_summary(1, "Clear CT", body_summary->get_clear_ct_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2265 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2266 print_summary(1, "Update RS", body_summary->get_update_rs_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2267 print_summary(1, "Ext Root Scanning",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2268 body_summary->get_ext_root_scan_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2269 print_summary(1, "Mark Stack Scanning",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2270 body_summary->get_mark_stack_scan_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2271 print_summary(1, "Scan RS", body_summary->get_scan_rs_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2272 print_summary(1, "Object Copy", body_summary->get_obj_copy_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2273 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2274 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2275 print_summary(1, "Other", summary->get_other_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2276 {
1779 6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2277 if (body_summary != NULL) {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2278 NumberSeq calc_other_times_ms;
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2279 if (parallel) {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2280 // parallel
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2281 NumberSeq* other_parts[] = {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2282 body_summary->get_satb_drain_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2283 body_summary->get_parallel_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2284 body_summary->get_clear_ct_seq()
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2285 };
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2286 calc_other_times_ms = NumberSeq(summary->get_total_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2287 3, other_parts);
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2288 } else {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2289 // serial
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2290 NumberSeq* other_parts[] = {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2291 body_summary->get_satb_drain_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2292 body_summary->get_update_rs_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2293 body_summary->get_ext_root_scan_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2294 body_summary->get_mark_stack_scan_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2295 body_summary->get_scan_rs_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2296 body_summary->get_obj_copy_seq()
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2297 };
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2298 calc_other_times_ms = NumberSeq(summary->get_total_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2299 6, other_parts);
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2300 }
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2301 check_other_times(1, summary->get_other_seq(), &calc_other_times_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2302 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2303 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2304 } else {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2305 LineBuffer(1).append_and_print_cr("none");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2306 }
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2307 LineBuffer(0).append_and_print_cr("");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2308 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2309
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2310 void G1CollectorPolicy::print_tracing_info() const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2311 if (TraceGen0Time) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2312 gclog_or_tty->print_cr("ALL PAUSES");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2313 print_summary_sd(0, "Total", _all_pause_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2314 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2315 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2316 gclog_or_tty->print_cr(" Full Young GC Pauses: %8d", _full_young_pause_num);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2317 gclog_or_tty->print_cr(" Partial Young GC Pauses: %8d", _partial_young_pause_num);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2318 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2319
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2320 gclog_or_tty->print_cr("EVACUATION PAUSES");
96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2321 print_summary(_summary);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2322
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2323 gclog_or_tty->print_cr("MISC");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2324 print_summary_sd(0, "Stop World", _all_stop_world_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2325 print_summary_sd(0, "Yields", _all_yield_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2326 for (int i = 0; i < _aux_num; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2327 if (_all_aux_times_ms[i].num() > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2328 char buffer[96];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2329 sprintf(buffer, "Aux%d", i);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2330 print_summary_sd(0, buffer, &_all_aux_times_ms[i]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2331 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2332 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2333
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2334 size_t all_region_num = _region_num_young + _region_num_tenured;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2335 gclog_or_tty->print_cr(" New Regions %8d, Young %8d (%6.2lf%%), "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2336 "Tenured %8d (%6.2lf%%)",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2337 all_region_num,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2338 _region_num_young,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2339 (double) _region_num_young / (double) all_region_num * 100.0,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2340 _region_num_tenured,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2341 (double) _region_num_tenured / (double) all_region_num * 100.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2342 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2343 if (TraceGen1Time) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2344 if (_all_full_gc_times_ms->num() > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2345 gclog_or_tty->print("\n%4d full_gcs: total time = %8.2f s",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2346 _all_full_gc_times_ms->num(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2347 _all_full_gc_times_ms->sum() / 1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2348 gclog_or_tty->print_cr(" (avg = %8.2fms).", _all_full_gc_times_ms->avg());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2349 gclog_or_tty->print_cr(" [std. dev = %8.2f ms, max = %8.2f ms]",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2350 _all_full_gc_times_ms->sd(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2351 _all_full_gc_times_ms->maximum());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2352 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2353 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2354 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2355
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2356 void G1CollectorPolicy::print_yg_surv_rate_info() const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2357 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2358 _short_lived_surv_rate_group->print_surv_rate_summary();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2359 // add this call for any other surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2360 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2361 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2362
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2363 void G1CollectorPolicy::update_region_num(bool young) {
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	2364 if (young) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2365 ++_region_num_young;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2366 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2367 ++_region_num_tenured;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2368 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2369 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2370
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2371 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2372 // for debugging, bit of a hack...
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2373 static char*
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2374 region_num_to_mbs(int length) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2375 static char buffer[64];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2376 double bytes = (double) (length * HeapRegion::GrainBytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2377 double mbs = bytes / (double) (1024 * 1024);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2378 sprintf(buffer, "%7.2lfMB", mbs);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2379 return buffer;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2380 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2381 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2382
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2383 size_t G1CollectorPolicy::max_regions(int purpose) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2384 switch (purpose) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2385 case GCAllocForSurvived:
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2386 return _max_survivor_regions;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2387 case GCAllocForTenured:
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2388 return REGIONS_UNLIMITED;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2389 default:
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2390 ShouldNotReachHere();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2391 return REGIONS_UNLIMITED;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2392 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2393 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2394
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	2395 void G1CollectorPolicy::update_max_gc_locker_expansion() {
1991 016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2396 size_t expansion_region_num = 0;
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2397 if (GCLockerEdenExpansionPercent > 0) {
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2398 double perc = (double) GCLockerEdenExpansionPercent / 100.0;
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2399 double expansion_region_num_d = perc * (double) _young_list_target_length;
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2400 // We use ceiling so that if expansion_region_num_d is > 0.0 (but
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2401 // less than 1.0) we'll get 1.
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2402 expansion_region_num = (size_t) ceil(expansion_region_num_d);
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2403 } else {
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2404 assert(expansion_region_num == 0, "sanity");
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2405 }
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2406 _young_list_max_length = _young_list_target_length + expansion_region_num;
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2407 assert(_young_list_target_length <= _young_list_max_length, "post-condition");
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2408 }
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2409
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2410 // Calculates survivor space parameters.
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	2411 void G1CollectorPolicy::update_survivors_policy() {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	2412 double max_survivor_regions_d =
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	2413 (double) _young_list_target_length / (double) SurvivorRatio;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	2414 // We use ceiling so that if max_survivor_regions_d is > 0.0 (but
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	2415 // smaller than 1.0) we'll get 1.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	2416 _max_survivor_regions = (size_t) ceil(max_survivor_regions_d);
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	2417
3868 ae73da50be4b 7081064: G1: remove develop params G1FixedSurvivorSpaceSize, G1FixedTenuringThreshold, and G1FixedEdenSize tonyp parents: 3867 diff changeset	2418 _tenuring_threshold = _survivors_age_table.compute_tenuring_threshold(
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2419 HeapRegion::GrainWords * _max_survivor_regions);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2420 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2421
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2422 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2423 class HRSortIndexIsOKClosure: public HeapRegionClosure {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2424 CollectionSetChooser* _chooser;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2425 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2426 HRSortIndexIsOKClosure(CollectionSetChooser* chooser) :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2427 _chooser(chooser) {}
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2428
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2429 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2430 if (!r->continuesHumongous()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2431 assert(_chooser->regionProperlyOrdered(r), "Ought to be.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2432 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2433 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2434 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2435 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2436
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2437 bool G1CollectorPolicy_BestRegionsFirst::assertMarkedBytesDataOK() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2438 HRSortIndexIsOKClosure cl(_collectionSetChooser);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2439 _g1->heap_region_iterate(&cl);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2440 return true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2441 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2442 #endif
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2443
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2444 bool G1CollectorPolicy::force_initial_mark_if_outside_cycle(
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2445 GCCause::Cause gc_cause) {
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2446 bool during_cycle = _g1->concurrent_mark()->cmThread()->during_cycle();
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2447 if (!during_cycle) {
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2448 ergo_verbose1(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2449 "request concurrent cycle initiation",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2450 ergo_format_reason("requested by GC cause")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2451 ergo_format_str("GC cause"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2452 GCCause::to_string(gc_cause));
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2453 set_initiate_conc_mark_if_possible();
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2454 return true;
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2455 } else {
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2456 ergo_verbose1(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2457 "do not request concurrent cycle initiation",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2458 ergo_format_reason("concurrent cycle already in progress")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2459 ergo_format_str("GC cause"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2460 GCCause::to_string(gc_cause));
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2461 return false;
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2462 }
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2463 }
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2464
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2465 void
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2466 G1CollectorPolicy::decide_on_conc_mark_initiation() {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2467 // We are about to decide on whether this pause will be an
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2468 // initial-mark pause.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2469
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2470 // First, during_initial_mark_pause() should not be already set. We
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2471 // will set it here if we have to. However, it should be cleared by
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2472 // the end of the pause (it's only set for the duration of an
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2473 // initial-mark pause).
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2474 assert(!during_initial_mark_pause(), "pre-condition");
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2475
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2476 if (initiate_conc_mark_if_possible()) {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2477 // We had noticed on a previous pause that the heap occupancy has
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2478 // gone over the initiating threshold and we should start a
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2479 // concurrent marking cycle. So we might initiate one.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2480
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2481 bool during_cycle = _g1->concurrent_mark()->cmThread()->during_cycle();
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2482 if (!during_cycle) {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2483 // The concurrent marking thread is not "during a cycle", i.e.,
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2484 // it has completed the last one. So we can go ahead and
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2485 // initiate a new cycle.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2486
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2487 set_during_initial_mark_pause();
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2488
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2489 // And we can now clear initiate_conc_mark_if_possible() as
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2490 // we've already acted on it.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2491 clear_initiate_conc_mark_if_possible();
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2492
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2493 ergo_verbose0(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2494 "initiate concurrent cycle",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2495 ergo_format_reason("concurrent cycle initiation requested"));
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2496 } else {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2497 // The concurrent marking thread is still finishing up the
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2498 // previous cycle. If we start one right now the two cycles
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2499 // overlap. In particular, the concurrent marking thread might
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2500 // be in the process of clearing the next marking bitmap (which
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2501 // we will use for the next cycle if we start one). Starting a
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2502 // cycle now will be bad given that parts of the marking
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2503 // information might get cleared by the marking thread. And we
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2504 // cannot wait for the marking thread to finish the cycle as it
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2505 // periodically yields while clearing the next marking bitmap
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2506 // and, if it's in a yield point, it's waiting for us to
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2507 // finish. So, at this point we will not start a cycle and we'll
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2508 // let the concurrent marking thread complete the last one.
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2509 ergo_verbose0(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2510 "do not initiate concurrent cycle",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2511 ergo_format_reason("concurrent cycle already in progress"));
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2512 }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2513 }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2514 }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2515
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2516 void
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2517 G1CollectorPolicy_BestRegionsFirst::
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2518 record_collection_pause_start(double start_time_sec, size_t start_used) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2519 G1CollectorPolicy::record_collection_pause_start(start_time_sec, start_used);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2520 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2521
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2522 class KnownGarbageClosure: public HeapRegionClosure {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2523 CollectionSetChooser* _hrSorted;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2524
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2525 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2526 KnownGarbageClosure(CollectionSetChooser* hrSorted) :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2527 _hrSorted(hrSorted)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2528 {}
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2529
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2530 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2531 // We only include humongous regions in collection
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2532 // sets when concurrent mark shows that their contained object is
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2533 // unreachable.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2534
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2535 // Do we have any marking information for this region?
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2536 if (r->is_marked()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2537 // We don't include humongous regions in collection
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2538 // sets because we collect them immediately at the end of a marking
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2539 // cycle. We also don't include young regions because we must
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2540 // include them in the next collection pause.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2541 if (!r->isHumongous() && !r->is_young()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2542 _hrSorted->addMarkedHeapRegion(r);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2543 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2544 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2545 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2546 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2547 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2548
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2549 class ParKnownGarbageHRClosure: public HeapRegionClosure {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2550 CollectionSetChooser* _hrSorted;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2551 jint _marked_regions_added;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2552 jint _chunk_size;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2553 jint _cur_chunk_idx;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2554 jint _cur_chunk_end; // Cur chunk [_cur_chunk_idx, _cur_chunk_end)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2555 int _worker;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2556 int _invokes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2557
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2558 void get_new_chunk() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2559 _cur_chunk_idx = _hrSorted->getParMarkedHeapRegionChunk(_chunk_size);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2560 _cur_chunk_end = _cur_chunk_idx + _chunk_size;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2561 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2562 void add_region(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2563 if (_cur_chunk_idx == _cur_chunk_end) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2564 get_new_chunk();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2565 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2566 assert(_cur_chunk_idx < _cur_chunk_end, "postcondition");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2567 _hrSorted->setMarkedHeapRegion(_cur_chunk_idx, r);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2568 _marked_regions_added++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2569 _cur_chunk_idx++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2570 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2571
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2572 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2573 ParKnownGarbageHRClosure(CollectionSetChooser* hrSorted,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2574 jint chunk_size,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2575 int worker) :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2576 _hrSorted(hrSorted), _chunk_size(chunk_size), _worker(worker),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2577 _marked_regions_added(0), _cur_chunk_idx(0), _cur_chunk_end(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2578 _invokes(0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2579 {}
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2580
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2581 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2582 // We only include humongous regions in collection
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2583 // sets when concurrent mark shows that their contained object is
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2584 // unreachable.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2585 _invokes++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2586
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2587 // Do we have any marking information for this region?
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2588 if (r->is_marked()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2589 // We don't include humongous regions in collection
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2590 // sets because we collect them immediately at the end of a marking
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2591 // cycle.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2592 // We also do not include young regions in collection sets
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2593 if (!r->isHumongous() && !r->is_young()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2594 add_region(r);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2595 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2596 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2597 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2598 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2599 jint marked_regions_added() { return _marked_regions_added; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2600 int invokes() { return _invokes; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2601 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2602
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2603 class ParKnownGarbageTask: public AbstractGangTask {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2604 CollectionSetChooser* _hrSorted;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2605 jint _chunk_size;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2606 G1CollectedHeap* _g1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2607 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2608 ParKnownGarbageTask(CollectionSetChooser* hrSorted, jint chunk_size) :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2609 AbstractGangTask("ParKnownGarbageTask"),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2610 _hrSorted(hrSorted), _chunk_size(chunk_size),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2611 _g1(G1CollectedHeap::heap())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2612 {}
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2613
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2614 void work(int i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2615 ParKnownGarbageHRClosure parKnownGarbageCl(_hrSorted, _chunk_size, i);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2616 // Back to zero for the claim value.
355 0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2617 _g1->heap_region_par_iterate_chunked(&parKnownGarbageCl, i,
0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2618 HeapRegion::InitialClaimValue);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2619 jint regions_added = parKnownGarbageCl.marked_regions_added();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2620 _hrSorted->incNumMarkedHeapRegions(regions_added);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2621 if (G1PrintParCleanupStats) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2622 gclog_or_tty->print_cr(" Thread %d called %d times, added %d regions to list.",
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2623 i, parKnownGarbageCl.invokes(), regions_added);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2624 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2625 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2626 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2627
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2628 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2629 G1CollectorPolicy_BestRegionsFirst::
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2630 record_concurrent_mark_cleanup_end(size_t freed_bytes,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2631 size_t max_live_bytes) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2632 double start;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2633 if (G1PrintParCleanupStats) start = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2634 record_concurrent_mark_cleanup_end_work1(freed_bytes, max_live_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2635
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2636 _collectionSetChooser->clearMarkedHeapRegions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2637 double clear_marked_end;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2638 if (G1PrintParCleanupStats) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2639 clear_marked_end = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2640 gclog_or_tty->print_cr(" clear marked regions + work1: %8.3f ms.",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2641 (clear_marked_end - start)*1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2642 }
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	2643 if (G1CollectedHeap::use_parallel_gc_threads()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2644 const size_t OverpartitionFactor = 4;
1571 2d127394260e 6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb kvn parents: 1394 diff changeset	2645 const size_t MinWorkUnit = 8;
2d127394260e 6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb kvn parents: 1394 diff changeset	2646 const size_t WorkUnit =
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2647 MAX2(_g1->n_regions() / (ParallelGCThreads * OverpartitionFactor),
1571 2d127394260e 6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb kvn parents: 1394 diff changeset	2648 MinWorkUnit);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2649 _collectionSetChooser->prepareForAddMarkedHeapRegionsPar(_g1->n_regions(),
1571 2d127394260e 6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb kvn parents: 1394 diff changeset	2650 WorkUnit);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2651 ParKnownGarbageTask parKnownGarbageTask(_collectionSetChooser,
1571 2d127394260e 6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb kvn parents: 1394 diff changeset	2652 (int) WorkUnit);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2653 _g1->workers()->run_task(&parKnownGarbageTask);
355 0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2654
0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2655 assert(_g1->check_heap_region_claim_values(HeapRegion::InitialClaimValue),
0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2656 "sanity check");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2657 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2658 KnownGarbageClosure knownGarbagecl(_collectionSetChooser);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2659 _g1->heap_region_iterate(&knownGarbagecl);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2660 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2661 double known_garbage_end;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2662 if (G1PrintParCleanupStats) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2663 known_garbage_end = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2664 gclog_or_tty->print_cr(" compute known garbage: %8.3f ms.",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2665 (known_garbage_end - clear_marked_end)*1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2666 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2667 _collectionSetChooser->sortMarkedHeapRegions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2668 double sort_end;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2669 if (G1PrintParCleanupStats) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2670 sort_end = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2671 gclog_or_tty->print_cr(" sorting: %8.3f ms.",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2672 (sort_end - known_garbage_end)*1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2673 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2674
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2675 record_concurrent_mark_cleanup_end_work2();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2676 double work2_end;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2677 if (G1PrintParCleanupStats) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2678 work2_end = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2679 gclog_or_tty->print_cr(" work2: %8.3f ms.",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2680 (work2_end - sort_end)*1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2681 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2682 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2683
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2684 // Add the heap region at the head of the non-incremental collection set
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2685 void G1CollectorPolicy::
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2686 add_to_collection_set(HeapRegion* hr) {
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2687 assert(_inc_cset_build_state == Active, "Precondition");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2688 assert(!hr->is_young(), "non-incremental add of young region");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2689
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2690 if (_g1->mark_in_progress())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2691 _g1->concurrent_mark()->registerCSetRegion(hr);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2692
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2693 assert(!hr->in_collection_set(), "should not already be in the CSet");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2694 hr->set_in_collection_set(true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2695 hr->set_next_in_collection_set(_collection_set);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2696 _collection_set = hr;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2697 _collection_set_size++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2698 _collection_set_bytes_used_before += hr->used();
526 818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 470 diff changeset	2699 _g1->register_region_with_in_cset_fast_test(hr);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2700 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2701
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2702 // Initialize the per-collection-set information
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2703 void G1CollectorPolicy::start_incremental_cset_building() {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2704 assert(_inc_cset_build_state == Inactive, "Precondition");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2705
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2706 _inc_cset_head = NULL;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2707 _inc_cset_tail = NULL;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2708 _inc_cset_size = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2709 _inc_cset_bytes_used_before = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2710
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2711 _inc_cset_young_index = 0;
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2712
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2713 _inc_cset_max_finger = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2714 _inc_cset_recorded_young_bytes = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2715 _inc_cset_recorded_rs_lengths = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2716 _inc_cset_predicted_elapsed_time_ms = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2717 _inc_cset_predicted_bytes_to_copy = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2718 _inc_cset_build_state = Active;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2719 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2720
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2721 void G1CollectorPolicy::add_to_incremental_cset_info(HeapRegion* hr, size_t rs_length) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2722 // This routine is used when:
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2723 // * adding survivor regions to the incremental cset at the end of an
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2724 // evacuation pause,
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2725 // * adding the current allocation region to the incremental cset
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2726 // when it is retired, and
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2727 // * updating existing policy information for a region in the
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2728 // incremental cset via young list RSet sampling.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2729 // Therefore this routine may be called at a safepoint by the
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2730 // VM thread, or in-between safepoints by mutator threads (when
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2731 // retiring the current allocation region) or a concurrent
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2732 // refine thread (RSet sampling).
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2733
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2734 double region_elapsed_time_ms = predict_region_elapsed_time_ms(hr, true);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2735 size_t used_bytes = hr->used();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2736
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2737 _inc_cset_recorded_rs_lengths += rs_length;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2738 _inc_cset_predicted_elapsed_time_ms += region_elapsed_time_ms;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2739
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2740 _inc_cset_bytes_used_before += used_bytes;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2741
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2742 // Cache the values we have added to the aggregated informtion
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2743 // in the heap region in case we have to remove this region from
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2744 // the incremental collection set, or it is updated by the
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2745 // rset sampling code
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2746 hr->set_recorded_rs_length(rs_length);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2747 hr->set_predicted_elapsed_time_ms(region_elapsed_time_ms);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2748
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2749 #if PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2750 size_t bytes_to_copy = predict_bytes_to_copy(hr);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2751 _inc_cset_predicted_bytes_to_copy += bytes_to_copy;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2752
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2753 // Record the number of bytes used in this region
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2754 _inc_cset_recorded_young_bytes += used_bytes;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2755
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2756 // Cache the values we have added to the aggregated informtion
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2757 // in the heap region in case we have to remove this region from
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2758 // the incremental collection set, or it is updated by the
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2759 // rset sampling code
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2760 hr->set_predicted_bytes_to_copy(bytes_to_copy);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2761 #endif // PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2762 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2763
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2764 void G1CollectorPolicy::remove_from_incremental_cset_info(HeapRegion* hr) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2765 // This routine is currently only called as part of the updating of
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2766 // existing policy information for regions in the incremental cset that
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2767 // is performed by the concurrent refine thread(s) as part of young list
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2768 // RSet sampling. Therefore we should not be at a safepoint.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2769
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2770 assert(!SafepointSynchronize::is_at_safepoint(), "should not be at safepoint");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2771 assert(hr->is_young(), "it should be");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2772
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2773 size_t used_bytes = hr->used();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2774 size_t old_rs_length = hr->recorded_rs_length();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2775 double old_elapsed_time_ms = hr->predicted_elapsed_time_ms();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2776
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2777 // Subtract the old recorded/predicted policy information for
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2778 // the given heap region from the collection set info.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2779 _inc_cset_recorded_rs_lengths -= old_rs_length;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2780 _inc_cset_predicted_elapsed_time_ms -= old_elapsed_time_ms;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2781
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2782 _inc_cset_bytes_used_before -= used_bytes;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2783
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2784 // Clear the values cached in the heap region
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2785 hr->set_recorded_rs_length(0);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2786 hr->set_predicted_elapsed_time_ms(0);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2787
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2788 #if PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2789 size_t old_predicted_bytes_to_copy = hr->predicted_bytes_to_copy();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2790 _inc_cset_predicted_bytes_to_copy -= old_predicted_bytes_to_copy;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2791
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2792 // Subtract the number of bytes used in this region
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2793 _inc_cset_recorded_young_bytes -= used_bytes;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2794
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2795 // Clear the values cached in the heap region
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2796 hr->set_predicted_bytes_to_copy(0);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2797 #endif // PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2798 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2799
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2800 void G1CollectorPolicy::update_incremental_cset_info(HeapRegion* hr, size_t new_rs_length) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2801 // Update the collection set information that is dependent on the new RS length
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2802 assert(hr->is_young(), "Precondition");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2803
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2804 remove_from_incremental_cset_info(hr);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2805 add_to_incremental_cset_info(hr, new_rs_length);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2806 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2807
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2808 void G1CollectorPolicy::add_region_to_incremental_cset_common(HeapRegion* hr) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2809 assert( hr->is_young(), "invariant");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2810 assert( hr->young_index_in_cset() == -1, "invariant" );
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2811 assert(_inc_cset_build_state == Active, "Precondition");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2812
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2813 // We need to clear and set the cached recorded/cached collection set
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2814 // information in the heap region here (before the region gets added
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2815 // to the collection set). An individual heap region's cached values
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2816 // are calculated, aggregated with the policy collection set info,
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2817 // and cached in the heap region here (initially) and (subsequently)
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2818 // by the Young List sampling code.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2819
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2820 size_t rs_length = hr->rem_set()->occupied();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2821 add_to_incremental_cset_info(hr, rs_length);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2822
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2823 HeapWord* hr_end = hr->end();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2824 _inc_cset_max_finger = MAX2(_inc_cset_max_finger, hr_end);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2825
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2826 assert(!hr->in_collection_set(), "invariant");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2827 hr->set_in_collection_set(true);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2828 assert( hr->next_in_collection_set() == NULL, "invariant");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2829
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2830 _inc_cset_size++;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2831 _g1->register_region_with_in_cset_fast_test(hr);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2832
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2833 hr->set_young_index_in_cset((int) _inc_cset_young_index);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2834 ++_inc_cset_young_index;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2835 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2836
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2837 // Add the region at the RHS of the incremental cset
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2838 void G1CollectorPolicy::add_region_to_incremental_cset_rhs(HeapRegion* hr) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2839 // We should only ever be appending survivors at the end of a pause
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2840 assert( hr->is_survivor(), "Logic");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2841
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2842 // Do the 'common' stuff
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2843 add_region_to_incremental_cset_common(hr);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2844
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2845 // Now add the region at the right hand side
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2846 if (_inc_cset_tail == NULL) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2847 assert(_inc_cset_head == NULL, "invariant");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2848 _inc_cset_head = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2849 } else {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2850 _inc_cset_tail->set_next_in_collection_set(hr);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2851 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2852 _inc_cset_tail = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2853 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2854
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2855 // Add the region to the LHS of the incremental cset
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2856 void G1CollectorPolicy::add_region_to_incremental_cset_lhs(HeapRegion* hr) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2857 // Survivors should be added to the RHS at the end of a pause
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2858 assert(!hr->is_survivor(), "Logic");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2859
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2860 // Do the 'common' stuff
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2861 add_region_to_incremental_cset_common(hr);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2862
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2863 // Add the region at the left hand side
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2864 hr->set_next_in_collection_set(_inc_cset_head);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2865 if (_inc_cset_head == NULL) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2866 assert(_inc_cset_tail == NULL, "Invariant");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2867 _inc_cset_tail = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2868 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2869 _inc_cset_head = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2870 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2871
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2872 #ifndef PRODUCT
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2873 void G1CollectorPolicy::print_collection_set(HeapRegion* list_head, outputStream* st) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2874 assert(list_head == inc_cset_head() \|\| list_head == collection_set(), "must be");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2875
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2876 st->print_cr("\nCollection_set:");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2877 HeapRegion* csr = list_head;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2878 while (csr != NULL) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2879 HeapRegion* next = csr->next_in_collection_set();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2880 assert(csr->in_collection_set(), "bad CS");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2881 st->print_cr(" [%08x-%08x], t: %08x, P: %08x, N: %08x, C: %08x, "
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2882 "age: %4d, y: %d, surv: %d",
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2883 csr->bottom(), csr->end(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2884 csr->top(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2885 csr->prev_top_at_mark_start(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2886 csr->next_top_at_mark_start(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2887 csr->top_at_conc_mark_count(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2888 csr->age_in_surv_rate_group_cond(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2889 csr->is_young(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2890 csr->is_survivor());
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2891 csr = next;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2892 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2893 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2894 #endif // !PRODUCT
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2895
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	2896 void
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2897 G1CollectorPolicy_BestRegionsFirst::choose_collection_set(
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2898 double target_pause_time_ms) {
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2899 // Set this here - in case we're not doing young collections.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2900 double non_young_start_time_sec = os::elapsedTime();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2901
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2902 YoungList* young_list = _g1->young_list();
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2903
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2904 start_recording_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2905
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2906 guarantee(target_pause_time_ms > 0.0,
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2907 err_msg("target_pause_time_ms = %1.6lf should be positive",
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2908 target_pause_time_ms));
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2909 guarantee(_collection_set == NULL, "Precondition");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2910
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2911 double base_time_ms = predict_base_elapsed_time_ms(_pending_cards);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2912 double predicted_pause_time_ms = base_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2913
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2914 double time_remaining_ms = target_pause_time_ms - base_time_ms;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2915
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2916 ergo_verbose3(ErgoCSetConstruction \| ErgoHigh,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2917 "start choosing CSet",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2918 ergo_format_ms("predicted base time")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2919 ergo_format_ms("remaining time")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2920 ergo_format_ms("target pause time"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2921 base_time_ms, time_remaining_ms, target_pause_time_ms);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2922
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2923 // the 10% and 50% values are arbitrary...
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2924 double threshold = 0.10 * target_pause_time_ms;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2925 if (time_remaining_ms < threshold) {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2926 double prev_time_remaining_ms = time_remaining_ms;
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2927 time_remaining_ms = 0.50 * target_pause_time_ms;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2928 _within_target = false;
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2929 ergo_verbose3(ErgoCSetConstruction,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2930 "adjust remaining time",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2931 ergo_format_reason("remaining time lower than threshold")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2932 ergo_format_ms("remaining time")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2933 ergo_format_ms("threshold")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2934 ergo_format_ms("adjusted remaining time"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2935 prev_time_remaining_ms, threshold, time_remaining_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2936 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2937 _within_target = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2938 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2939
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2940 size_t expansion_bytes = _g1->expansion_regions() * HeapRegion::GrainBytes;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2941
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2942 HeapRegion* hr;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2943 double young_start_time_sec = os::elapsedTime();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2944
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2945 _collection_set_bytes_used_before = 0;
96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2946 _collection_set_size = 0;
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2947 _young_cset_length = 0;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2948 _last_young_gc_full = full_young_gcs() ? true : false;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2949
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2950 if (_last_young_gc_full) {
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2951 ++_full_young_pause_num;
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2952 } else {
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2953 ++_partial_young_pause_num;
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2954 }
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2955
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2956 // The young list is laid with the survivor regions from the previous
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2957 // pause are appended to the RHS of the young list, i.e.
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2958 // [Newly Young Regions ++ Survivors from last pause].
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2959
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2960 size_t survivor_region_num = young_list->survivor_length();
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2961 size_t eden_region_num = young_list->length() - survivor_region_num;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2962 size_t old_region_num = 0;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2963 hr = young_list->first_survivor_region();
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2964 while (hr != NULL) {
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2965 assert(hr->is_survivor(), "badly formed young list");
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2966 hr->set_young();
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2967 hr = hr->get_next_young_region();
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2968 }
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2969
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2970 // Clear the fields that point to the survivor list - they are all young now.
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2971 young_list->clear_survivors();
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2972
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2973 if (_g1->mark_in_progress())
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2974 _g1->concurrent_mark()->register_collection_set_finger(_inc_cset_max_finger);
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2975
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2976 _young_cset_length = _inc_cset_young_index;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2977 _collection_set = _inc_cset_head;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2978 _collection_set_size = _inc_cset_size;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2979 _collection_set_bytes_used_before = _inc_cset_bytes_used_before;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2980 time_remaining_ms -= _inc_cset_predicted_elapsed_time_ms;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2981 predicted_pause_time_ms += _inc_cset_predicted_elapsed_time_ms;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2982
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2983 ergo_verbose3(ErgoCSetConstruction \| ErgoHigh,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2984 "add young regions to CSet",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2985 ergo_format_region("eden")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2986 ergo_format_region("survivors")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2987 ergo_format_ms("predicted young region time"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2988 eden_region_num, survivor_region_num,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2989 _inc_cset_predicted_elapsed_time_ms);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2990
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2991 // The number of recorded young regions is the incremental
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2992 // collection set's current size
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2993 set_recorded_young_regions(_inc_cset_size);
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2994 set_recorded_rs_lengths(_inc_cset_recorded_rs_lengths);
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2995 set_recorded_young_bytes(_inc_cset_recorded_young_bytes);
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2996 #if PREDICTIONS_VERBOSE
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2997 set_predicted_bytes_to_copy(_inc_cset_predicted_bytes_to_copy);
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2998 #endif // PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2999
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3000 assert(_inc_cset_size == young_list->length(), "Invariant");
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	3001
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	3002 double young_end_time_sec = os::elapsedTime();
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	3003 _recorded_young_cset_choice_time_ms =
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	3004 (young_end_time_sec - young_start_time_sec) * 1000.0;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	3005
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	3006 // We are doing young collections so reset this.
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	3007 non_young_start_time_sec = young_end_time_sec;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	3008
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	3009 if (!full_young_gcs()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3010 bool should_continue = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3011 NumberSeq seq;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3012 double avg_prediction = 100000000000000000.0; // something very large
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	3013
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3014 size_t prev_collection_set_size = _collection_set_size;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3015 double prev_predicted_pause_time_ms = predicted_pause_time_ms;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3016 do {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3017 hr = _collectionSetChooser->getNextMarkedRegion(time_remaining_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3018 avg_prediction);
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	3019 if (hr != NULL) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3020 double predicted_time_ms = predict_region_elapsed_time_ms(hr, false);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3021 time_remaining_ms -= predicted_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3022 predicted_pause_time_ms += predicted_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3023 add_to_collection_set(hr);
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	3024 record_non_young_cset_region(hr);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3025 seq.add(predicted_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3026 avg_prediction = seq.avg() + seq.sd();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3027 }
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3028
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3029 should_continue = true;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3030 if (hr == NULL) {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3031 // No need for an ergo verbose message here,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3032 // getNextMarkRegion() does this when it returns NULL.
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3033 should_continue = false;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3034 } else {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3035 if (adaptive_young_list_length()) {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3036 if (time_remaining_ms < 0.0) {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3037 ergo_verbose1(ErgoCSetConstruction,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3038 "stop adding old regions to CSet",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3039 ergo_format_reason("remaining time is lower than 0")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3040 ergo_format_ms("remaining time"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3041 time_remaining_ms);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3042 should_continue = false;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3043 }
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3044 } else {
3927 f1b4e0e0bdad 7089625: G1: policy for how many old regions to add to the CSet (when young gen is fixed) is broken tonyp parents: 3920 diff changeset	3045 if (_collection_set_size >= _young_list_fixed_length) {
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3046 ergo_verbose2(ErgoCSetConstruction,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3047 "stop adding old regions to CSet",
3927 f1b4e0e0bdad 7089625: G1: policy for how many old regions to add to the CSet (when young gen is fixed) is broken tonyp parents: 3920 diff changeset	3048 ergo_format_reason("CSet length reached target")
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3049 ergo_format_region("CSet")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3050 ergo_format_region("young target"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3051 _collection_set_size, _young_list_fixed_length);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3052 should_continue = false;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3053 }
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3054 }
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3055 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3056 } while (should_continue);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3057
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3058 if (!adaptive_young_list_length() &&
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3059 _collection_set_size < _young_list_fixed_length) {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3060 ergo_verbose2(ErgoCSetConstruction,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3061 "request partially-young GCs end",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3062 ergo_format_reason("CSet length lower than target")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3063 ergo_format_region("CSet")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3064 ergo_format_region("young target"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3065 _collection_set_size, _young_list_fixed_length);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3066 _should_revert_to_full_young_gcs = true;
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3067 }
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3068
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3069 old_region_num = _collection_set_size - prev_collection_set_size;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3070
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3071 ergo_verbose2(ErgoCSetConstruction \| ErgoHigh,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3072 "add old regions to CSet",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3073 ergo_format_region("old")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3074 ergo_format_ms("predicted old region time"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3075 old_region_num,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3076 predicted_pause_time_ms - prev_predicted_pause_time_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3077 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3078
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	3079 stop_incremental_cset_building();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	3080
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3081 count_CS_bytes_used();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3082
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3083 end_recording_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3084
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3085 ergo_verbose5(ErgoCSetConstruction,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3086 "finish choosing CSet",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3087 ergo_format_region("eden")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3088 ergo_format_region("survivors")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3089 ergo_format_region("old")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3090 ergo_format_ms("predicted pause time")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3091 ergo_format_ms("target pause time"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3092 eden_region_num, survivor_region_num, old_region_num,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3093 predicted_pause_time_ms, target_pause_time_ms);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3094
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3095 double non_young_end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3096 _recorded_non_young_cset_choice_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3097 (non_young_end_time_sec - non_young_start_time_sec) * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3098 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3099
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3100 void G1CollectorPolicy_BestRegionsFirst::record_full_collection_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3101 G1CollectorPolicy::record_full_collection_end();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3102 _collectionSetChooser->updateAfterFullCollection();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3103 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3104
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3105 void G1CollectorPolicy_BestRegionsFirst::
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	3106 record_collection_pause_end() {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	3107 G1CollectorPolicy::record_collection_pause_end();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3108 assert(assertMarkedBytesDataOK(), "Marked regions not OK at pause end.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3109 }

Mercurial > hg > truffle

annotate src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp @ 3927:f1b4e0e0bdad