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

annotate src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp @ 4023:c6a6e936dc68

7096030: G1: PrintGCDetails enhancements 7102445: G1: Unnecessary Resource allocations during RSet scanning Summary: Add a new per-worker thread line in the PrintGCDetails output. GC Worker Other is the difference between the elapsed time for the parallel phase of the evacuation pause and the sum of the times of the sub-phases (external root scanning, mark stack scanning, RSet updating, RSet scanning, object copying, and termination) for that worker. During RSet scanning, stack allocate DirtyCardToOopClosure objects; allocating these in a resource area was causing abnormally high GC Worker Other times while the worker thread freed ResourceArea chunks. Reviewed-by: tonyp, jwilhelm, brutisso

author	johnc
date	Sun, 23 Oct 2011 23:06:06 -0700
parents	074f0252cc13
children	dbfcbecbb2dc

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
3979 4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3976 diff changeset	155 _cur_clear_ct_time_ms(0.0),
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3976 diff changeset	156
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3976 diff changeset	157 _cur_ref_proc_time_ms(0.0),
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3976 diff changeset	158 _cur_ref_enq_time_ms(0.0),
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3976 diff changeset	159
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	160 #ifndef PRODUCT
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	161 _min_clear_cc_time_ms(-1.0),
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	162 _max_clear_cc_time_ms(-1.0),
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	163 _cur_clear_cc_time_ms(0.0),
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	164 _cum_clear_cc_time_ms(0.0),
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	165 _num_cc_clears(0L),
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	166 #endif
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	167
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	168 _region_num_young(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	169 _region_num_tenured(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	170 _prev_region_num_young(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	171 _prev_region_num_tenured(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	172
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	173 _aux_num(10),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	174 _all_aux_times_ms(new NumberSeq[_aux_num]),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	175 _cur_aux_start_times_ms(new double[_aux_num]),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	176 _cur_aux_times_ms(new double[_aux_num]),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	177 _cur_aux_times_set(new bool[_aux_num]),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	178
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	179 _concurrent_mark_remark_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	180 _concurrent_mark_cleanup_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	181
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	182 // <NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	183
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	184 _alloc_rate_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	185 _prev_collection_pause_end_ms(0.0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	186 _pending_card_diff_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	187 _rs_length_diff_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	188 _cost_per_card_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	189 _fully_young_cards_per_entry_ratio_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	190 _partially_young_cards_per_entry_ratio_seq(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	191 new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	192 _cost_per_entry_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	193 _partially_young_cost_per_entry_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	194 _cost_per_byte_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	195 _cost_per_byte_ms_during_cm_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	196 _constant_other_time_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	197 _young_other_cost_per_region_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	198 _non_young_other_cost_per_region_ms_seq(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	199 new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	200
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	201 _pending_cards_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	202 _scanned_cards_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	203 _rs_lengths_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	204
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	205 _pause_time_target_ms((double) MaxGCPauseMillis),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	206
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	207 // </NEW PREDICTION>
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 _full_young_gcs(true),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	210 _full_young_pause_num(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	211 _partial_young_pause_num(0),
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 _during_marking(false),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	214 _in_marking_window(false),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	215 _in_marking_window_im(false),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	216
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	217 _known_garbage_ratio(0.0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	218 _known_garbage_bytes(0),
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 _young_gc_eff_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	221
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	222 _recent_prev_end_times_for_all_gcs_sec(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	223
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	224 _recent_CS_bytes_used_before(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	225 _recent_CS_bytes_surviving(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	226
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	227 _recent_avg_pause_time_ratio(0.0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	228
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	229 _all_full_gc_times_ms(new NumberSeq()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	230
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	231 // G1PausesBtwnConcMark defaults to -1
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	232 // so the hack is to do the cast QQQ FIXME
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	233 _pauses_btwn_concurrent_mark((size_t)G1PausesBtwnConcMark),
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
3986 65a8ff39a6da 7095194: G1: HeapRegion::GrainBytes, GrainWords, and CardsPerRegion should be size_t johnc parents: 3982 diff changeset	297 const size_t region_size = HeapRegion::GrainWords;
1391 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];
3986 65a8ff39a6da 7095194: G1: HeapRegion::GrainBytes, GrainWords, and CardsPerRegion should be size_t johnc parents: 3982 diff changeset	300 jio_snprintf(buffer, sizeof(buffer), "%sPLABSize should be at most "SIZE_FORMAT,
1391 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];
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	323 _par_last_gc_worker_other_times_ms = new double[_parallel_gc_threads];
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	324
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	325 // start conservatively
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	326 _expensive_region_limit_ms = 0.5 * (double) MaxGCPauseMillis;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	327
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	328 // <NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	329
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	330 int index;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	331 if (ParallelGCThreads == 0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	332 index = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	333 else if (ParallelGCThreads > 8)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	334 index = 7;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	335 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	336 index = ParallelGCThreads - 1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	337
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	338 _pending_card_diff_seq->add(0.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	339 _rs_length_diff_seq->add(rs_length_diff_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	340 _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	341 _fully_young_cards_per_entry_ratio_seq->add(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	342 fully_young_cards_per_entry_ratio_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	343 _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	344 _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	345 _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	346 _young_other_cost_per_region_ms_seq->add(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	347 young_other_cost_per_region_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	348 _non_young_other_cost_per_region_ms_seq->add(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	349 non_young_other_cost_per_region_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	350
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	351 // </NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	352
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	353 // 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	354 // 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	355 // 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	356 // 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	357 // 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	358 // 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	359 // 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	360 // 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	361 // 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	362
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 // 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	364 // 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	365 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	366 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	367 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	368 "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	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 }
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 (!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	372 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	373 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	374 "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	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
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 // 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	379 // 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	380 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	381 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	382 // 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	383 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	384 } 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	385 // 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	386 // 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	387 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	388 "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	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
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 // 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	393 // 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	394 // 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	395 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	396 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	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
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 // 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	400 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	401 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	402 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	403 "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	404 "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	405 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	406 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	407 }
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	408
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	409 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	410 double time_slice = (double) GCPauseIntervalMillis / 1000.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	411 _mmu_tracker = new G1MMUTrackerQueue(time_slice, max_gc_time);
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	412 _sigma = (double) G1ConfidencePercent / 100.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	413
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	414 // start conservatively (around 50ms is about right)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	415 _concurrent_mark_remark_times_ms->add(0.05);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	416 _concurrent_mark_cleanup_times_ms->add(0.20);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	417 _tenuring_threshold = MaxTenuringThreshold;
3868 ae73da50be4b 7081064: G1: remove develop params G1FixedSurvivorSpaceSize, G1FixedTenuringThreshold, and G1FixedEdenSize tonyp parents: 3867 diff changeset	418 // _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	419 // update_young_list_target_length() during initialization.
3868 ae73da50be4b 7081064: G1: remove develop params G1FixedSurvivorSpaceSize, G1FixedTenuringThreshold, and G1FixedEdenSize tonyp parents: 3867 diff changeset	420 _max_survivor_regions = 0;
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	421
1356 56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	422 assert(GCTimeRatio > 0,
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	423 "we should have set it to a default value set_g1_gc_flags() "
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	424 "if a user set it to 0");
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	425 _gc_overhead_perc = 100.0 * (1.0 / (1.0 + GCTimeRatio));
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	426
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	427 uintx reserve_perc = G1ReservePercent;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	428 // 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	429 if (reserve_perc > 50) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	430 reserve_perc = 50;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	431 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	432 "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	433 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	434 _reserve_factor = (double) reserve_perc / 100.0;
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	435 // 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	436 // 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	437 _reserve_regions = 0;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	438
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	439 initialize_all();
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	440 _collectionSetChooser = new CollectionSetChooser();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	441 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	442
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	443 // Increment "i", mod "len"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	444 static void inc_mod(int& i, int len) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	445 i++; if (i == len) i = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	446 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	447
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	448 void G1CollectorPolicy::initialize_flags() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	449 set_min_alignment(HeapRegion::GrainBytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	450 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	451 if (SurvivorRatio < 1) {
1e458753107d 6802413: G1: G1FixedSurvivorSpaceSize should be converted into regions in calculate_survivors_policy() apetrusenko parents: 545 diff changeset	452 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	453 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	454 CollectorPolicy::initialize_flags();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	455 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	456
1285 a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	457 // 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	458 // 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	459 // 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	460 // 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	461 // 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	462 // 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	463 class G1YoungGenSizer : public TwoGenerationCollectorPolicy {
3976 d912b598c6c3 7091032: G1: assert failure when NewRatio is used tonyp parents: 3927 diff changeset	464 private:
d912b598c6c3 7091032: G1: assert failure when NewRatio is used tonyp parents: 3927 diff changeset	465 size_t size_to_region_num(size_t byte_size) {
d912b598c6c3 7091032: G1: assert failure when NewRatio is used tonyp parents: 3927 diff changeset	466 return MAX2((size_t) 1, byte_size / HeapRegion::GrainBytes);
d912b598c6c3 7091032: G1: assert failure when NewRatio is used tonyp parents: 3927 diff changeset	467 }
1285 a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	468
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	469 public:
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	470 G1YoungGenSizer() {
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	471 initialize_flags();
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	472 initialize_size_info();
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 min_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(_min_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 initial_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(_initial_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 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	481 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	482 }
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	483 };
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	484
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	485 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	486 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	487 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	488 _min_desired_young_length = young_size;
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	489 _max_desired_young_length = young_size;
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	490 }
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	491
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	492 void G1CollectorPolicy::init() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	493 // Set aside an initial future to_space.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	494 _g1 = G1CollectedHeap::heap();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	495
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	496 assert(Heap_lock->owned_by_self(), "Locking discipline.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	497
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	498 initialize_gc_policy_counters();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	499
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	500 G1YoungGenSizer sizer;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	501 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	502 _min_desired_young_length = sizer.min_young_region_num();
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	503 _max_desired_young_length = sizer.max_young_region_num();
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	504
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	505 if (FLAG_IS_CMDLINE(NewRatio)) {
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	506 if (FLAG_IS_CMDLINE(NewSize) \|\| FLAG_IS_CMDLINE(MaxNewSize)) {
3976 d912b598c6c3 7091032: G1: assert failure when NewRatio is used tonyp parents: 3927 diff changeset	507 warning("-XX:NewSize and -XX:MaxNewSize override -XX:NewRatio");
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	508 } else {
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	509 // Treat NewRatio as a fixed size that is only recalculated when the heap size changes
3976 d912b598c6c3 7091032: G1: assert failure when NewRatio is used tonyp parents: 3927 diff changeset	510 update_young_list_size_using_newratio(_g1->n_regions());
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	511 _using_new_ratio_calculations = true;
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 }
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	514
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	515 // GenCollectorPolicy guarantees that min <= initial <= max.
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	516 // 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	517 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	518 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	519 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	520
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	521 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	522 if (adaptive_young_list_length()) {
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	523 _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	524 } else {
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	525 _young_list_fixed_length = initial_region_num;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	526 }
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	527 _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	528 update_young_list_target_length();
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	529 _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	530
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	531 // 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	532 // 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	533 start_incremental_cset_building();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	534 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	535
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	536 // 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	537 void G1CollectorPolicy::initialize_gc_policy_counters() {
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	538 _gc_policy_counters = new GCPolicyCounters("GarbageFirst", 1, 3);
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	539 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	540
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	541 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	542 double base_time_ms,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	543 size_t base_free_regions,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	544 double target_pause_time_ms) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	545 if (young_length >= base_free_regions) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	546 // end condition 1: not enough space for the young regions
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	547 return false;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	548 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	549
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	550 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	551 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	552 (size_t) (accum_surv_rate * (double) HeapRegion::GrainBytes);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	553 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	554 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	555 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	556 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	557 // end condition 2: prediction is over the target pause time
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	558 return false;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	559 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	560
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	561 size_t free_bytes =
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	562 (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	563 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	564 // end condition 3: out-of-space (conservatively!)
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	565 return false;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	566 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	567
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	568 // success!
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	569 return true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	570 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	571
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	572 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	573 // re-calculate the necessary reserve
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	574 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	575 // 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	576 // 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	577 _reserve_regions = (size_t) ceil(reserve_regions_d);
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	578
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	579 if (_using_new_ratio_calculations) {
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	580 // -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	581 // young gen length when the heap size has changed.
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	582 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	583 }
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	584 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	585
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	586 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	587 size_t base_min_length) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	588 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	589 if (adaptive_young_list_length()) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	590 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	591 double now_sec = os::elapsedTime();
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	592 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	593 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	594 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	595 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	596 // 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	597 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	598 }
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	599 desired_min_length += base_min_length;
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	600 // 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	601 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	602 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	603
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	604 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	605 // 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	606 // 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	607 // effectively don't set this bound.
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	608 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	609 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	610
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	611 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	612 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	613 // 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	614 // otherwise, use the given value.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	615 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	616 }
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 // 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	619
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	620 // 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	621 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	622 // 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	623 // 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	624 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	625 size_t desired_min_length =
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	626 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	627 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	628 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	629 }
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 // 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	632
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	633 // 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	634 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	635 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	636 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	637 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	638 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	639 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	640 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	641 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	642
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	643 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	644 if (adaptive_young_list_length()) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	645 if (full_young_gcs()) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	646 young_list_target_length =
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	647 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	648 base_min_length,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	649 desired_min_length,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	650 desired_max_length);
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	651 _rs_lengths_prediction = rs_lengths;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	652 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	653 // 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	654 // 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	655 // 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	656 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	657 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	658 if (full_young_gcs()) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	659 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	660 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	661 // 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	662 // 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	663 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	664 // 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	665 // 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	666 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	667 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	668 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	669
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	670 // 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	671 // 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	672 // 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	673 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	674 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	675 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	676 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	677 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	678 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	679
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 > recorded_survivor_regions(),
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	681 "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	682 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	683 _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	684
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	685 update_max_gc_locker_expansion();
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	686 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	687
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	688 size_t
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	689 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	690 size_t base_min_length,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	691 size_t desired_min_length,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	692 size_t desired_max_length) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	693 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	694 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	695
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	696 // 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	697 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	698 return desired_min_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	699 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	700
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	701 // 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	702 // 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	703 // 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	704 // 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	705 // survivor_regions_evac_time prediction.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	706 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	707 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	708 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	709 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	710
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	711 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	712 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	713 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	714 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	715 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	716 double base_time_ms =
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	717 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	718 survivor_regions_evac_time;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	719 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	720 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	721 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	722 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	723 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	724
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	725 // 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	726 // 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	727
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	728 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	729 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	730 // 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	731 // 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	732 // 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	733 // 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	734 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	735 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	736 // 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	737 // 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	738 // 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	739 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	740 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	741 // 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	742 // 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	743 // length. The loop invariants are:
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	744 //
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	745 // 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	746 // 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	747 // 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	748 //
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	749 // 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	750 // 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	751 // 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	752 // 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	753 // 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	754 // 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	755
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	756 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	757 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	758 while (diff > 0) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	759 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	760 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	761 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	762 min_young_length = young_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	763 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	764 max_young_length = young_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	765 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	766 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	767 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	768 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	769 // 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	770 // 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	771
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	772 // 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	773 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	774 "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	775 "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	776 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	777 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	778 "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	779 "fit into the pause target");
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	780 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	781 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	782 "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	783 "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	784 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	785 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	786 // 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	787 // 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	788 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	789 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	790 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	791
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	792 double G1CollectorPolicy::predict_survivor_regions_evac_time() {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	793 double survivor_regions_evac_time = 0.0;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	794 for (HeapRegion * r = _recorded_survivor_head;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	795 r != NULL && r != _recorded_survivor_tail->get_next_young_region();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	796 r = r->get_next_young_region()) {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	797 survivor_regions_evac_time += predict_region_elapsed_time_ms(r, true);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	798 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	799 return survivor_regions_evac_time;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	800 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	801
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	802 void G1CollectorPolicy::revise_young_list_target_length_if_necessary() {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	803 guarantee( adaptive_young_list_length(), "should not call this otherwise" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	804
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	805 size_t rs_lengths = _g1->young_list()->sampled_rs_lengths();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	806 if (rs_lengths > _rs_lengths_prediction) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	807 // add 10% to avoid having to recalculate often
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	808 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	809 update_young_list_target_length(rs_lengths_prediction);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	810 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	811 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	812
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	813
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	814
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	815 HeapWord* G1CollectorPolicy::mem_allocate_work(size_t size,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	816 bool is_tlab,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	817 bool* gc_overhead_limit_was_exceeded) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	818 guarantee(false, "Not using this policy feature yet.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	819 return NULL;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	820 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	821
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	822 // This method controls how a collector handles one or more
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	823 // of its generations being fully allocated.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	824 HeapWord* G1CollectorPolicy::satisfy_failed_allocation(size_t size,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	825 bool is_tlab) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	826 guarantee(false, "Not using this policy feature yet.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	827 return NULL;
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	830
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	831 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	832 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	833 HeapRegion* head = _g1->young_list()->first_region();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	834 return
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	835 verify_young_ages(head, _short_lived_surv_rate_group);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	836 // also call verify_young_ages on any additional surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	837 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	838
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	839 bool
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	840 G1CollectorPolicy::verify_young_ages(HeapRegion* head,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	841 SurvRateGroup *surv_rate_group) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	842 guarantee( surv_rate_group != NULL, "pre-condition" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	843
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	844 const char* name = surv_rate_group->name();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	845 bool ret = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	846 int prev_age = -1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	847
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	848 for (HeapRegion* curr = head;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	849 curr != NULL;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	850 curr = curr->get_next_young_region()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	851 SurvRateGroup* group = curr->surv_rate_group();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	852 if (group == NULL && !curr->is_survivor()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	853 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	854 ret = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	855 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	856
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	857 if (surv_rate_group == group) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	858 int age = curr->age_in_surv_rate_group();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	859
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	860 if (age < 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	861 gclog_or_tty->print_cr("## %s: encountered negative age", name);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	862 ret = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	863 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	864
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	865 if (age <= prev_age) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	866 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	867 "(%d, %d)", name, age, prev_age);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	868 ret = false;
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 prev_age = age;
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 }
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 return ret;
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 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	877
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	878 void G1CollectorPolicy::record_full_collection_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	879 _cur_collection_start_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	880 // 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	881 _g1->set_full_collection();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	882 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	883
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	884 void G1CollectorPolicy::record_full_collection_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	885 // Consider this like a collection pause for the purposes of allocation
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	886 // since last pause.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	887 double end_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	888 double full_gc_time_sec = end_sec - _cur_collection_start_sec;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	889 double full_gc_time_ms = full_gc_time_sec * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	890
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	891 _all_full_gc_times_ms->add(full_gc_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	892
595 3698e8f47799 6804746: G1: guarantee(variance() > -1.0,"variance should be >= 0") (due to evacuation failure) tonyp parents: 547 diff changeset	893 update_recent_gc_times(end_sec, full_gc_time_ms);
342 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 _g1->clear_full_collection();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	896
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	897 // "Nuke" the heuristics that control the fully/partially young GC
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	898 // 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	899 // Full GC.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	900 set_full_young_gcs(true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	901 _last_full_young_gc = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	902 _should_revert_to_full_young_gcs = false;
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	903 clear_initiate_conc_mark_if_possible();
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	904 clear_during_initial_mark_pause();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	905 _known_garbage_bytes = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	906 _known_garbage_ratio = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	907 _in_marking_window = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	908 _in_marking_window_im = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	909
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	910 _short_lived_surv_rate_group->start_adding_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	911 // also call this on any additional surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	912
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	913 record_survivor_regions(0, NULL, NULL);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	914
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	915 _prev_region_num_young = _region_num_young;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	916 _prev_region_num_tenured = _region_num_tenured;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	917
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	918 _free_regions_at_end_of_collection = _g1->free_regions();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	919 // Reset survivors SurvRateGroup.
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	920 _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	921 update_young_list_target_length();
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	922 _collectionSetChooser->updateAfterFullCollection();
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	923 }
342 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 void G1CollectorPolicy::record_stop_world_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	926 _stop_world_start = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	927 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	928
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	929 void G1CollectorPolicy::record_collection_pause_start(double start_time_sec,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	930 size_t start_used) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	931 if (PrintGCDetails) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	932 gclog_or_tty->stamp(PrintGCTimeStamps);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	933 gclog_or_tty->print("[GC pause");
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	934 gclog_or_tty->print(" (%s)", full_young_gcs() ? "young" : "partial");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	935 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	936
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	937 // 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	938 // 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	939 // 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	940 update_survivors_policy();
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	941
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	942 assert(_g1->used() == _g1->recalculate_used(),
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	943 err_msg("sanity, used: "SIZE_FORMAT" recalculate_used: "SIZE_FORMAT,
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	944 _g1->used(), _g1->recalculate_used()));
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	945
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	946 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	947 _all_stop_world_times_ms->add(s_w_t_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	948 _stop_world_start = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	949
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	950 _cur_collection_start_sec = start_time_sec;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	951 _cur_collection_pause_used_at_start_bytes = start_used;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	952 _cur_collection_pause_used_regions_at_start = _g1->used_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	953 _pending_cards = _g1->pending_card_num();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	954 _max_pending_cards = _g1->max_pending_card_num();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	955
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	956 _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	957 _bytes_copied_during_gc = 0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	958
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	959 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	960 _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	961 _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	962 _capacity_before_gc = _g1->capacity();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	963
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	964 #ifdef DEBUG
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	965 // initialise these to something well known so that we can spot
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	966 // if they are not set properly
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	967
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	968 for (int i = 0; i < _parallel_gc_threads; ++i) {
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	969 _par_last_gc_worker_start_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	970 _par_last_ext_root_scan_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	971 _par_last_mark_stack_scan_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	972 _par_last_update_rs_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	973 _par_last_update_rs_processed_buffers[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	974 _par_last_scan_rs_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	975 _par_last_obj_copy_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	976 _par_last_termination_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	977 _par_last_termination_attempts[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	978 _par_last_gc_worker_end_times_ms[i] = -1234.0;
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	979 _par_last_gc_worker_times_ms[i] = -1234.0;
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	980 _par_last_gc_worker_other_times_ms[i] = -1234.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	981 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	982 #endif
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 for (int i = 0; i < _aux_num; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	985 _cur_aux_times_ms[i] = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	986 _cur_aux_times_set[i] = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	987 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	988
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	989 // These are initialized to zero here and they are set during
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	990 // the evacuation pause if marking is in progress.
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	991 _cur_satb_drain_time_ms = 0.0;
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	992 _last_satb_drain_processed_buffers = 0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	993
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	994 _last_young_gc_full = false;
342 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 // do that for any other surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	997 _short_lived_surv_rate_group->stop_adding_regions();
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	998 _survivors_age_table.clear();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	999
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1000 assert( verify_young_ages(), "region age verification" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1001 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1002
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1003 void G1CollectorPolicy::record_mark_closure_time(double mark_closure_time_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1004 _mark_closure_time_ms = mark_closure_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1005 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1006
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1007 void G1CollectorPolicy::record_concurrent_mark_init_end(double
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1008 mark_init_elapsed_time_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1009 _during_marking = true;
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1010 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	1011 clear_during_initial_mark_pause();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1012 _cur_mark_stop_world_time_ms = mark_init_elapsed_time_ms;
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1015 void G1CollectorPolicy::record_concurrent_mark_remark_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1016 _mark_remark_start_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1017 _during_marking = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1018 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1019
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1020 void G1CollectorPolicy::record_concurrent_mark_remark_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1021 double end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1022 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	1023 _concurrent_mark_remark_times_ms->add(elapsed_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1024 _cur_mark_stop_world_time_ms += elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1025 _prev_collection_pause_end_ms += elapsed_time_ms;
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 _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	1028 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1029
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1030 void G1CollectorPolicy::record_concurrent_mark_cleanup_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1031 _mark_cleanup_start_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1032 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1033
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	1034 void G1CollectorPolicy::record_concurrent_mark_cleanup_completed() {
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1035 _should_revert_to_full_young_gcs = false;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1036 _last_full_young_gc = true;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1037 _in_marking_window = false;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1038 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1039
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1040 void G1CollectorPolicy::record_concurrent_pause() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1041 if (_stop_world_start > 0.0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1042 double yield_ms = (os::elapsedTime() - _stop_world_start) * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1043 _all_yield_times_ms->add(yield_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1044 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1045 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1046
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1047 void G1CollectorPolicy::record_concurrent_pause_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1048 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1049
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1050 template<class T>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1051 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	1052 T sum = (T)0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1053 for (int i = 0; i < n; i++) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1054 int j = (start + i) % N;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1055 sum += sum_arr[j];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1056 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1057 return sum;
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
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	1060 void G1CollectorPolicy::print_par_stats(int level,
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	1061 const char* str,
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1062 double* data) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1063 double min = data[0], max = data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1064 double total = 0.0;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1065 LineBuffer buf(level);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1066 buf.append("[%s (ms):", str);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1067 for (uint i = 0; i < ParallelGCThreads; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1068 double val = data[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1069 if (val < min)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1070 min = val;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1071 if (val > max)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1072 max = val;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1073 total += val;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1074 buf.append(" %3.1lf", val);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1075 }
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1076 buf.append_and_print_cr("");
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1077 double avg = total / (double) ParallelGCThreads;
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1078 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	1079 avg, min, max, max - min);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1080 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1081
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	1082 void G1CollectorPolicy::print_par_sizes(int level,
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	1083 const char* str,
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1084 double* data) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1085 double min = data[0], max = data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1086 double total = 0.0;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1087 LineBuffer buf(level);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1088 buf.append("[%s :", str);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1089 for (uint i = 0; i < ParallelGCThreads; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1090 double val = data[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1091 if (val < min)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1092 min = val;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1093 if (val > max)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1094 max = val;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1095 total += val;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1096 buf.append(" %d", (int) val);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1097 }
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1098 buf.append_and_print_cr("");
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1099 double avg = total / (double) ParallelGCThreads;
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1100 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	1101 (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	1102 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1103
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1104 void G1CollectorPolicy::print_stats(int level,
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1105 const char* str,
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1106 double value) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1107 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	1108 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1109
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1110 void G1CollectorPolicy::print_stats(int level,
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1111 const char* str,
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1112 int value) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1113 LineBuffer(level).append_and_print_cr("[%s: %d]", str, value);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1114 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1115
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1116 double G1CollectorPolicy::avg_value(double* data) {
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1117 if (G1CollectedHeap::use_parallel_gc_threads()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1118 double ret = 0.0;
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1119 for (uint i = 0; i < ParallelGCThreads; ++i) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1120 ret += data[i];
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1121 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1122 return ret / (double) ParallelGCThreads;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1123 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1124 return data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1125 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1126 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1127
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1128 double G1CollectorPolicy::max_value(double* data) {
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1129 if (G1CollectedHeap::use_parallel_gc_threads()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1130 double ret = data[0];
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1131 for (uint i = 1; i < ParallelGCThreads; ++i) {
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1132 if (data[i] > ret) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1133 ret = data[i];
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1134 }
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1135 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1136 return ret;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1137 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1138 return data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1139 }
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
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1142 double G1CollectorPolicy::sum_of_values(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 sum = 0.0;
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1145 for (uint i = 0; i < ParallelGCThreads; i++) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1146 sum += data[i];
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1147 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1148 return sum;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1149 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1150 return data[0];
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
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1154 double G1CollectorPolicy::max_sum(double* data1, double* data2) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1155 double ret = data1[0] + data2[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1156
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1157 if (G1CollectedHeap::use_parallel_gc_threads()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1158 for (uint i = 1; i < ParallelGCThreads; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1159 double data = data1[i] + data2[i];
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1160 if (data > ret) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1161 ret = data;
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1162 }
342 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 return ret;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1166 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1167
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1168 // Anything below that is considered to be zero
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1169 #define MIN_TIMER_GRANULARITY 0.0000001
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1170
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1171 void G1CollectorPolicy::record_collection_pause_end() {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1172 double end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1173 double elapsed_ms = _last_pause_time_ms;
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1174 bool parallel = G1CollectedHeap::use_parallel_gc_threads();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1175 size_t rs_size =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1176 _cur_collection_pause_used_regions_at_start - collection_set_size();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1177 size_t cur_used_bytes = _g1->used();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1178 assert(cur_used_bytes == _g1->recalculate_used(), "It should!");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1179 bool last_pause_included_initial_mark = false;
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1180 bool update_stats = !_g1->evacuation_failed();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1181
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1182 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1183 if (G1YoungSurvRateVerbose) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1184 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1185 _short_lived_surv_rate_group->print();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1186 // do that for any other surv rate groups too
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1187 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1188 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1189
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1190 last_pause_included_initial_mark = during_initial_mark_pause();
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1191 if (last_pause_included_initial_mark)
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1192 record_concurrent_mark_init_end(0.0);
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1193
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1194 size_t marking_initiating_used_threshold =
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1195 (_g1->capacity() / 100) * InitiatingHeapOccupancyPercent;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1196
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1197 if (!_g1->mark_in_progress() && !_last_full_young_gc) {
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1198 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	1199 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	1200 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	1201 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	1202
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1203 ergo_verbose3(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1204 "request concurrent cycle initiation",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1205 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	1206 ergo_format_byte("occupancy")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1207 ergo_format_byte_perc("threshold"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1208 cur_used_bytes,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1209 marking_initiating_used_threshold,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1210 (double) InitiatingHeapOccupancyPercent);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1211
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1212 // 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	1213 // 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	1214 // 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	1215 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	1216 } else {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1217 ergo_verbose2(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1218 "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	1219 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	1220 ergo_format_byte("occupancy")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1221 ergo_format_byte("previous occupancy"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1222 cur_used_bytes,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1223 _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	1224 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1225 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1226 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1227
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1228 _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	1229
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1230 _mmu_tracker->add_pause(end_time_sec - elapsed_ms/1000.0,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1231 end_time_sec, false);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1232
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1233 guarantee(_cur_collection_pause_used_regions_at_start >=
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1234 collection_set_size(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1235 "Negative RS size?");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1236
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1237 // This assert is exempted when we're doing parallel collection pauses,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1238 // because the fragmentation caused by the parallel GC allocation buffers
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1239 // 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	1240 // before. Best leave this out until the fragmentation problem is fixed.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1241 // Pauses in which evacuation failed can also lead to negative
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1242 // collections, since no space is reclaimed from a region containing an
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1243 // object whose evacuation failed.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1244 // 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	1245 // 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	1246 // (DLD, 10/05.)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1247 assert((true \|\| parallel) // Always using GC LABs now.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1248 \|\| _g1->evacuation_failed()
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1249 \|\| _cur_collection_pause_used_at_start_bytes >= cur_used_bytes,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1250 "Negative collection");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1251
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1252 size_t freed_bytes =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1253 _cur_collection_pause_used_at_start_bytes - cur_used_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1254 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	1255
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1256 double survival_fraction =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1257 (double)surviving_bytes/
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1258 (double)_collection_set_bytes_used_before;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1259
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1260 _n_pauses++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1261
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1262 // These values are used to update the summary information that is
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1263 // displayed when TraceGen0Time is enabled, and are output as part
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1264 // of the PrintGCDetails output, in the non-parallel case.
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1265
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1266 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	1267 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	1268 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	1269 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	1270 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	1271 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	1272 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	1273 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	1274
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1275 double known_time = ext_root_scan_time +
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1276 mark_stack_scan_time +
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1277 update_rs_time +
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1278 scan_rs_time +
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1279 obj_copy_time;
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1280
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1281 double other_time_ms = elapsed_ms;
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1282
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1283 // Subtract the SATB drain time. It's initialized to zero at the
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1284 // start of the pause and is updated during the pause if marking
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1285 // is in progress.
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1286 other_time_ms -= _cur_satb_drain_time_ms;
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1287
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1288 if (parallel) {
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1289 other_time_ms -= _cur_collection_par_time_ms;
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1290 } else {
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1291 other_time_ms -= known_time;
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1292 }
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1293
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1294 // Subtract the time taken to clean the card table from the
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1295 // current value of "other time"
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1296 other_time_ms -= _cur_clear_ct_time_ms;
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1297
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1298 // TraceGen0Time and TraceGen1Time summary info updating.
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1299 _all_pause_times_ms->add(elapsed_ms);
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1300
595 3698e8f47799 6804746: G1: guarantee(variance() > -1.0,"variance should be >= 0") (due to evacuation failure) tonyp parents: 547 diff changeset	1301 if (update_stats) {
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1302 _recent_rs_scan_times_ms->add(scan_rs_time);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1303 _recent_pause_times_ms->add(elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1304 _recent_rs_sizes->add(rs_size);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1305
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1306 _summary->record_total_time_ms(elapsed_ms);
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1307 _summary->record_other_time_ms(other_time_ms);
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1308
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1309 MainBodySummary* body_summary = _summary->main_body_summary();
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1310 assert(body_summary != NULL, "should not be null!");
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1311
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1312 // This will be non-zero iff marking is currently in progress (i.e.
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1313 // _g1->mark_in_progress() == true) and the currrent pause was not
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1314 // an initial mark pause. Since the body_summary items are NumberSeqs,
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1315 // however, they have to be consistent and updated in lock-step with
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1316 // each other. Therefore we unconditionally record the SATB drain
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1317 // time - even if it's zero.
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1318 body_summary->record_satb_drain_time_ms(_cur_satb_drain_time_ms);
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1319
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1320 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	1321 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	1322 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	1323 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	1324 body_summary->record_obj_copy_time_ms(obj_copy_time);
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1325
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1326 if (parallel) {
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1327 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	1328 body_summary->record_termination_time_ms(termination_time);
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1329
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1330 double parallel_known_time = known_time + termination_time;
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1331 double parallel_other_time = _cur_collection_par_time_ms - parallel_known_time;
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1332 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	1333 }
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1334
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1335 body_summary->record_mark_closure_time_ms(_mark_closure_time_ms);
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1336 body_summary->record_clear_ct_time_ms(_cur_clear_ct_time_ms);
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	1337
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1338 // We exempt parallel collection from this check because Alloc Buffer
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1339 // fragmentation can produce negative collections. Same with evac
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1340 // failure.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1341 // 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	1342 // 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	1343 // (DLD, 10/05.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1344 assert((true \|\| parallel)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1345 \|\| _g1->evacuation_failed()
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1346 \|\| surviving_bytes <= _collection_set_bytes_used_before,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1347 "Or else negative collection!");
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1348
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1349 _recent_CS_bytes_used_before->add(_collection_set_bytes_used_before);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1350 _recent_CS_bytes_surviving->add(surviving_bytes);
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 // this is where we update the allocation rate of the application
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1353 double app_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1354 (_cur_collection_start_sec * 1000.0 - _prev_collection_pause_end_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1355 if (app_time_ms < MIN_TIMER_GRANULARITY) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1356 // This usually happens due to the timer not having the required
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1357 // granularity. Some Linuxes are the usual culprits.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1358 // We'll just set it to something (arbitrarily) small.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1359 app_time_ms = 1.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1360 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1361 size_t regions_allocated =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1362 (_region_num_young - _prev_region_num_young) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1363 (_region_num_tenured - _prev_region_num_tenured);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1364 double alloc_rate_ms = (double) regions_allocated / app_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1365 _alloc_rate_ms_seq->add(alloc_rate_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1366 _prev_region_num_young = _region_num_young;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1367 _prev_region_num_tenured = _region_num_tenured;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1368
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1369 double interval_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1370 (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	1371 update_recent_gc_times(end_time_sec, elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1372 _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	1373 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	1374 (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	1375 #ifndef PRODUCT
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1376 // 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	1377 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	1378 gclog_or_tty->print_cr("-------------------------------------------");
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1379 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	1380 _recent_gc_times_ms->dump();
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1381 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	1382 _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	1383 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	1384 _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	1385 // 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	1386 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	1387 #endif // !PRODUCT
23b9a8d315fc 6902701: G1: protect debugging code related to 6898948 with a debug flag ysr parents: 1086 diff changeset	1388 // 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	1389 // 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	1390 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	1391 _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	1392 } else {
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1393 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	1394 _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	1395 }
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1396 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1397 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1398
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1399 for (int i = 0; i < _aux_num; ++i) {
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1400 if (_cur_aux_times_set[i]) {
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1401 _all_aux_times_ms[i].add(_cur_aux_times_ms[i]);
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1402 }
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1403 }
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1404
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1405
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1406 if (G1PolicyVerbose > 1) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1407 gclog_or_tty->print_cr(" Recording collection pause(%d)", _n_pauses);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1408 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1409
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1410 if (G1PolicyVerbose > 1) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1411 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	1412 " ET-RS: %10.6f ms (avg: %10.6f ms)\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1413 " \|RS\|: " SIZE_FORMAT,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1414 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	1415 scan_rs_time, recent_avg_time_for_rs_scan_ms(),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1416 rs_size);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1417
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1418 gclog_or_tty->print_cr(" Used at start: " SIZE_FORMAT"K"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1419 " At end " SIZE_FORMAT "K\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1420 " garbage : " SIZE_FORMAT "K"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1421 " of " SIZE_FORMAT "K\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1422 " survival : %6.2f%% (%6.2f%% avg)",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1423 _cur_collection_pause_used_at_start_bytes/K,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1424 _g1->used()/K, freed_bytes/K,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1425 _collection_set_bytes_used_before/K,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1426 survival_fraction*100.0,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1427 recent_avg_survival_fraction()*100.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1428 gclog_or_tty->print_cr(" Recent %% gc pause time: %6.2f",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1429 recent_avg_pause_time_ratio() * 100.0);
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
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1432 // PrintGCDetails output
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1433 if (PrintGCDetails) {
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1434 bool print_marking_info =
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1435 _g1->mark_in_progress() && !last_pause_included_initial_mark;
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1436
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1437 gclog_or_tty->print_cr("%s, %1.8lf secs]",
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1438 (last_pause_included_initial_mark) ? " (initial-mark)" : "",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1439 elapsed_ms / 1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1440
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1441 if (print_marking_info) {
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1442 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	1443 print_stats(2, "Processed Buffers", _last_satb_drain_processed_buffers);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1444 }
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1445
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1446 if (parallel) {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1447 print_stats(1, "Parallel Time", _cur_collection_par_time_ms);
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1448 print_par_stats(2, "GC Worker Start", _par_last_gc_worker_start_times_ms);
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1449 print_par_stats(2, "Ext Root Scanning", _par_last_ext_root_scan_times_ms);
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1450 if (print_marking_info) {
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1451 print_par_stats(2, "Mark Stack Scanning", _par_last_mark_stack_scan_times_ms);
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1452 }
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1453 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	1454 print_par_sizes(3, "Processed Buffers", _par_last_update_rs_processed_buffers);
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1455 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	1456 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	1457 print_par_stats(2, "Termination", _par_last_termination_times_ms);
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1458 print_par_sizes(3, "Termination Attempts", _par_last_termination_attempts);
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1459 print_par_stats(2, "GC Worker End", _par_last_gc_worker_end_times_ms);
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1460
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1461 for (int i = 0; i < _parallel_gc_threads; i++) {
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1462 _par_last_gc_worker_times_ms[i] = _par_last_gc_worker_end_times_ms[i] - _par_last_gc_worker_start_times_ms[i];
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1463
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1464 double worker_known_time = _par_last_ext_root_scan_times_ms[i] +
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1465 _par_last_mark_stack_scan_times_ms[i] +
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1466 _par_last_update_rs_times_ms[i] +
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1467 _par_last_scan_rs_times_ms[i] +
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1468 _par_last_obj_copy_times_ms[i] +
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1469 _par_last_termination_times_ms[i];
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1470
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1471 _par_last_gc_worker_other_times_ms[i] = _cur_collection_par_time_ms - worker_known_time;
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1472 }
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1473 print_par_stats(2, "GC Worker", _par_last_gc_worker_times_ms);
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1474 print_par_stats(2, "GC Worker Other", _par_last_gc_worker_other_times_ms);
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1475 } else {
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1476 print_stats(1, "Ext Root Scanning", ext_root_scan_time);
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1477 if (print_marking_info) {
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1478 print_stats(1, "Mark Stack Scanning", mark_stack_scan_time);
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1479 }
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1480 print_stats(1, "Update RS", update_rs_time);
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1481 print_stats(2, "Processed Buffers", (int)update_rs_processed_buffers);
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1482 print_stats(1, "Scan RS", scan_rs_time);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1483 print_stats(1, "Object Copying", obj_copy_time);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1484 }
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	1485 print_stats(1, "Clear CT", _cur_clear_ct_time_ms);
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1486 #ifndef PRODUCT
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1487 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	1488 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	1489 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	1490 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	1491 if (_num_cc_clears > 0) {
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1492 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	1493 }
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1494 #endif
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1495 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	1496 print_stats(2, "Choose CSet", _recorded_young_cset_choice_time_ms);
3979 4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3976 diff changeset	1497 print_stats(2, "Ref Proc", _cur_ref_proc_time_ms);
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3976 diff changeset	1498 print_stats(2, "Ref Enq", _cur_ref_enq_time_ms);
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1499
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1500 for (int i = 0; i < _aux_num; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1501 if (_cur_aux_times_set[i]) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1502 char buffer[96];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1503 sprintf(buffer, "Aux%d", i);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1504 print_stats(1, buffer, _cur_aux_times_ms[i]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1505 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1506 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1507 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1508
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1509 // Update the efficiency-since-mark vars.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1510 double proc_ms = elapsed_ms * (double) _parallel_gc_threads;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1511 if (elapsed_ms < MIN_TIMER_GRANULARITY) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1512 // This usually happens due to the timer not having the required
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1513 // granularity. Some Linuxes are the usual culprits.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1514 // We'll just set it to something (arbitrarily) small.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1515 proc_ms = 1.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1516 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1517 double cur_efficiency = (double) freed_bytes / proc_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1518
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1519 bool new_in_marking_window = _in_marking_window;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1520 bool new_in_marking_window_im = false;
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1521 if (during_initial_mark_pause()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1522 new_in_marking_window = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1523 new_in_marking_window_im = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1524 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1525
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1526 if (_last_full_young_gc) {
3982 273b46400613 7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835 johnc parents: 3979 diff changeset	1527 if (!last_pause_included_initial_mark) {
273b46400613 7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835 johnc parents: 3979 diff changeset	1528 ergo_verbose2(ErgoPartiallyYoungGCs,
273b46400613 7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835 johnc parents: 3979 diff changeset	1529 "start partially-young GCs",
273b46400613 7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835 johnc parents: 3979 diff changeset	1530 ergo_format_byte_perc("known garbage"),
273b46400613 7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835 johnc parents: 3979 diff changeset	1531 _known_garbage_bytes, _known_garbage_ratio * 100.0);
273b46400613 7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835 johnc parents: 3979 diff changeset	1532 set_full_young_gcs(false);
273b46400613 7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835 johnc parents: 3979 diff changeset	1533 } else {
273b46400613 7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835 johnc parents: 3979 diff changeset	1534 ergo_verbose0(ErgoPartiallyYoungGCs,
273b46400613 7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835 johnc parents: 3979 diff changeset	1535 "do not start partially-young GCs",
273b46400613 7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835 johnc parents: 3979 diff changeset	1536 ergo_format_reason("concurrent cycle is about to start"));
273b46400613 7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835 johnc parents: 3979 diff changeset	1537 }
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1538 _last_full_young_gc = false;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1539 }
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1540
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1541 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	1542 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	1543 ergo_verbose2(ErgoPartiallyYoungGCs,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1544 "end partially-young GCs",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1545 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	1546 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	1547 _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	1548 set_full_young_gcs(true);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1549 } 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	1550 ergo_verbose3(ErgoPartiallyYoungGCs,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1551 "end partially-young GCs",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1552 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	1553 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	1554 ergo_format_perc("threshold"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1555 _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	1556 0.05 * 100.0);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1557 set_full_young_gcs(true);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1558 } 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	1559 (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	1560 ergo_verbose5(ErgoPartiallyYoungGCs,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1561 "end partially-young GCs",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1562 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	1563 "predicted fully-young GC efficiency")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1564 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	1565 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	1566 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	1567 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	1568 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	1569 predict_young_gc_eff(),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1570 _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	1571 set_full_young_gcs(true);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1572 }
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1573 }
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1574 _should_revert_to_full_young_gcs = false;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1575
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1576 if (_last_young_gc_full && !_during_marking) {
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1577 _young_gc_eff_seq->add(cur_efficiency);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1578 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1579
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1580 _short_lived_surv_rate_group->start_adding_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1581 // do that for any other surv rate groupsx
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1582
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1583 // <NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1584
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	1585 if (update_stats) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1586 double pause_time_ms = elapsed_ms;
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 diff = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1589 if (_max_pending_cards >= _pending_cards)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1590 diff = _max_pending_cards - _pending_cards;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1591 _pending_card_diff_seq->add((double) diff);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1592
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1593 double cost_per_card_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1594 if (_pending_cards > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1595 cost_per_card_ms = update_rs_time / (double) _pending_cards;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1596 _cost_per_card_ms_seq->add(cost_per_card_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 size_t cards_scanned = _g1->cards_scanned();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1600
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1601 double cost_per_entry_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1602 if (cards_scanned > 10) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1603 cost_per_entry_ms = scan_rs_time / (double) cards_scanned;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1604 if (_last_young_gc_full)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1605 _cost_per_entry_ms_seq->add(cost_per_entry_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1606 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1607 _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	1608 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1609
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1610 if (_max_rs_lengths > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1611 double cards_per_entry_ratio =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1612 (double) cards_scanned / (double) _max_rs_lengths;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1613 if (_last_young_gc_full)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1614 _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	1615 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1616 _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	1617 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1618
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1619 size_t rs_length_diff = _max_rs_lengths - _recorded_rs_lengths;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1620 if (rs_length_diff >= 0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1621 _rs_length_diff_seq->add((double) rs_length_diff);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1622
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1623 size_t copied_bytes = surviving_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1624 double cost_per_byte_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1625 if (copied_bytes > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1626 cost_per_byte_ms = obj_copy_time / (double) copied_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1627 if (_in_marking_window)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1628 _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	1629 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1630 _cost_per_byte_ms_seq->add(cost_per_byte_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1631 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1632
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1633 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	1634 (update_rs_time + scan_rs_time + obj_copy_time +
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1635 _mark_closure_time_ms + termination_time);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1636
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1637 double young_other_time_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1638 if (_recorded_young_regions > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1639 young_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1640 _recorded_young_cset_choice_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1641 _recorded_young_free_cset_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1642 _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	1643 (double) _recorded_young_regions);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1644 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1645 double non_young_other_time_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1646 if (_recorded_non_young_regions > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1647 non_young_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1648 _recorded_non_young_cset_choice_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1649 _recorded_non_young_free_cset_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1650
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1651 _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	1652 (double) _recorded_non_young_regions);
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1655 double constant_other_time_ms = all_other_time_ms -
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1656 (young_other_time_ms + non_young_other_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1657 _constant_other_time_ms_seq->add(constant_other_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1658
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1659 double survival_ratio = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1660 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	1661 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	1662 (double) _bytes_in_collection_set_before_gc;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1663 }
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 _pending_cards_seq->add((double) _pending_cards);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1666 _scanned_cards_seq->add((double) cards_scanned);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1667 _rs_lengths_seq->add((double) _max_rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1668
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1669 double expensive_region_limit_ms =
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1670 (double) MaxGCPauseMillis - predict_constant_other_time_ms();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1671 if (expensive_region_limit_ms < 0.0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1672 // 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	1673 // than the max pause time
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1674 expensive_region_limit_ms = (double) MaxGCPauseMillis;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1675 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1676 _expensive_region_limit_ms = expensive_region_limit_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1677
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1678 if (PREDICTIONS_VERBOSE) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1679 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1680 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	1681 "REGIONS %d %d %d "
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1682 "PENDING_CARDS %d %d "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1683 "CARDS_SCANNED %d %d "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1684 "RS_LENGTHS %d %d "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1685 "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	1686 "SURVIVAL_RATIO %1.6lf %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1687 "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	1688 "OTHER_YOUNG %1.6lf %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1689 "OTHER_NON_YOUNG %1.6lf %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1690 "VTIME_DIFF %1.6lf TERMINATION %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1691 "ELAPSED %1.6lf %1.6lf ",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1692 _cur_collection_start_sec,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1693 (!_last_young_gc_full) ? 2 :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1694 (last_pause_included_initial_mark) ? 1 : 0,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1695 _recorded_region_num,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1696 _recorded_young_regions,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1697 _recorded_non_young_regions,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1698 _predicted_pending_cards, _pending_cards,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1699 _predicted_cards_scanned, cards_scanned,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1700 _predicted_rs_lengths, _max_rs_lengths,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1701 _predicted_rs_update_time_ms, update_rs_time,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1702 _predicted_rs_scan_time_ms, scan_rs_time,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1703 _predicted_survival_ratio, survival_ratio,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1704 _predicted_object_copy_time_ms, obj_copy_time,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1705 _predicted_constant_other_time_ms, constant_other_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1706 _predicted_young_other_time_ms, young_other_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1707 _predicted_non_young_other_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1708 non_young_other_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1709 _vtime_diff_ms, termination_time,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1710 _predicted_pause_time_ms, elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1711 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1712
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1713 if (G1PolicyVerbose > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1714 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	1715 _predicted_pause_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1716 (_within_target) ? "within" : "outside",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1717 elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1718 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1719
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1722 _in_marking_window = new_in_marking_window;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1723 _in_marking_window_im = new_in_marking_window_im;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1724 _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	1725 update_young_list_target_length();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1726
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1727 // 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	1728 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	1729 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	1730 // </NEW PREDICTION>
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	1731
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	1732 assert(assertMarkedBytesDataOK(), "Marked regions not OK at pause end.");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1733 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1734
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1735 #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	1736 #define EXT_SIZE_PARAMS(bytes) \
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1737 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	1738 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	1739
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1740 void G1CollectorPolicy::print_heap_transition() {
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1741 if (PrintGCDetails) {
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1742 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	1743 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	1744 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	1745 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	1746 size_t used = _g1->used();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1747 size_t capacity = _g1->capacity();
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1748 size_t eden_capacity =
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1749 (_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	1750
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1751 gclog_or_tty->print_cr(
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1752 " [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	1753 "Survivors: "EXT_SIZE_FORMAT"->"EXT_SIZE_FORMAT" "
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1754 "Heap: "EXT_SIZE_FORMAT"("EXT_SIZE_FORMAT")->"
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1755 EXT_SIZE_FORMAT"("EXT_SIZE_FORMAT")]",
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1756 EXT_SIZE_PARAMS(_eden_bytes_before_gc),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1757 EXT_SIZE_PARAMS(_prev_eden_capacity),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1758 EXT_SIZE_PARAMS(eden_bytes),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1759 EXT_SIZE_PARAMS(eden_capacity),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1760 EXT_SIZE_PARAMS(_survivor_bytes_before_gc),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1761 EXT_SIZE_PARAMS(survivor_bytes),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1762 EXT_SIZE_PARAMS(used_before_gc),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1763 EXT_SIZE_PARAMS(_capacity_before_gc),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1764 EXT_SIZE_PARAMS(used),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1765 EXT_SIZE_PARAMS(capacity));
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1766
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1767 _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	1768 } else if (PrintGC) {
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1769 _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	1770 _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	1771 _g1->used(), _g1->capacity());
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1772 }
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1773 }
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1774
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1775 // <NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1776
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1777 void G1CollectorPolicy::adjust_concurrent_refinement(double update_rs_time,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1778 double update_rs_processed_buffers,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1779 double goal_ms) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1780 DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1781 ConcurrentG1Refine *cg1r = G1CollectedHeap::heap()->concurrent_g1_refine();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1782
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	1783 if (G1UseAdaptiveConcRefinement) {
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1784 const int k_gy = 3, k_gr = 6;
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1785 const double inc_k = 1.1, dec_k = 0.9;
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1786
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1787 int g = cg1r->green_zone();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1788 if (update_rs_time > goal_ms) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1789 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	1790 } else {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1791 if (update_rs_time < goal_ms && update_rs_processed_buffers > g) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1792 g = (int)MAX2(g * inc_k, g + 1.0);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1793 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1794 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1795 // Change the refinement threads params
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1796 cg1r->set_green_zone(g);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1797 cg1r->set_yellow_zone(g * k_gy);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1798 cg1r->set_red_zone(g * k_gr);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1799 cg1r->reinitialize_threads();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1800
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1801 int processing_threshold_delta = MAX2((int)(cg1r->green_zone() * sigma()), 1);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1802 int processing_threshold = MIN2(cg1r->green_zone() + processing_threshold_delta,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1803 cg1r->yellow_zone());
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1804 // Change the barrier params
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1805 dcqs.set_process_completed_threshold(processing_threshold);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1806 dcqs.set_max_completed_queue(cg1r->red_zone());
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1807 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1808
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1809 int curr_queue_size = dcqs.completed_buffers_num();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1810 if (curr_queue_size >= cg1r->yellow_zone()) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1811 dcqs.set_completed_queue_padding(curr_queue_size);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1812 } else {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1813 dcqs.set_completed_queue_padding(0);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1814 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1815 dcqs.notify_if_necessary();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1816 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1817
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1818 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1819 G1CollectorPolicy::
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1820 predict_young_collection_elapsed_time_ms(size_t adjustment) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1821 guarantee( adjustment == 0 \|\| adjustment == 1, "invariant" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1822
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1823 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	1824 size_t young_num = g1h->young_list()->length();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1825 if (young_num == 0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1826 return 0.0;
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 young_num += adjustment;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1829 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	1830 size_t rs_lengths = g1h->young_list()->sampled_rs_lengths() +
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1831 predict_rs_length_diff();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1832 size_t card_num;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1833 if (full_young_gcs())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1834 card_num = predict_young_card_num(rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1835 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1836 card_num = predict_non_young_card_num(rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1837 size_t young_byte_size = young_num * HeapRegion::GrainBytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1838 double accum_yg_surv_rate =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1839 _short_lived_surv_rate_group->accum_surv_rate(adjustment);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1840
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1841 size_t bytes_to_copy =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1842 (size_t) (accum_yg_surv_rate * (double) HeapRegion::GrainBytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1843
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1844 return
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1845 predict_rs_update_time_ms(pending_cards) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1846 predict_rs_scan_time_ms(card_num) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1847 predict_object_copy_time_ms(bytes_to_copy) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1848 predict_young_other_time_ms(young_num) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1849 predict_constant_other_time_ms();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1850 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1851
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1852 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1853 G1CollectorPolicy::predict_base_elapsed_time_ms(size_t pending_cards) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1854 size_t rs_length = predict_rs_length_diff();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1855 size_t card_num;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1856 if (full_young_gcs())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1857 card_num = predict_young_card_num(rs_length);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1858 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1859 card_num = predict_non_young_card_num(rs_length);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1860 return predict_base_elapsed_time_ms(pending_cards, card_num);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1861 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1862
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1863 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1864 G1CollectorPolicy::predict_base_elapsed_time_ms(size_t pending_cards,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1865 size_t scanned_cards) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1866 return
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1867 predict_rs_update_time_ms(pending_cards) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1868 predict_rs_scan_time_ms(scanned_cards) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1869 predict_constant_other_time_ms();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1870 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1871
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1872 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1873 G1CollectorPolicy::predict_region_elapsed_time_ms(HeapRegion* hr,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1874 bool young) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1875 size_t rs_length = hr->rem_set()->occupied();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1876 size_t card_num;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1877 if (full_young_gcs())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1878 card_num = predict_young_card_num(rs_length);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1879 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1880 card_num = predict_non_young_card_num(rs_length);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1881 size_t bytes_to_copy = predict_bytes_to_copy(hr);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1882
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1883 double region_elapsed_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1884 predict_rs_scan_time_ms(card_num) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1885 predict_object_copy_time_ms(bytes_to_copy);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1886
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1887 if (young)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1888 region_elapsed_time_ms += predict_young_other_time_ms(1);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1889 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1890 region_elapsed_time_ms += predict_non_young_other_time_ms(1);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1891
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1892 return region_elapsed_time_ms;
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 size_t
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1896 G1CollectorPolicy::predict_bytes_to_copy(HeapRegion* hr) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1897 size_t bytes_to_copy;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1898 if (hr->is_marked())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1899 bytes_to_copy = hr->max_live_bytes();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1900 else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1901 guarantee( hr->is_young() && hr->age_in_surv_rate_group() != -1,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1902 "invariant" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1903 int age = hr->age_in_surv_rate_group();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1904 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	1905 bytes_to_copy = (size_t) ((double) hr->used() * yg_surv_rate);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1906 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1907
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1908 return bytes_to_copy;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1909 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1910
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1911 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1912 G1CollectorPolicy::start_recording_regions() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1913 _recorded_rs_lengths = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1914 _recorded_young_regions = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1915 _recorded_non_young_regions = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1916
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1917 #if PREDICTIONS_VERBOSE
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1918 _recorded_marked_bytes = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1919 _recorded_young_bytes = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1920 _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	1921 _predicted_rs_lengths = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1922 _predicted_cards_scanned = 0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1923 #endif // PREDICTIONS_VERBOSE
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_cset_region_info(HeapRegion* hr, bool young) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1928 #if PREDICTIONS_VERBOSE
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1929 if (!young) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1930 _recorded_marked_bytes += hr->max_live_bytes();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1931 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1932 _predicted_bytes_to_copy += predict_bytes_to_copy(hr);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1933 #endif // PREDICTIONS_VERBOSE
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1934
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1935 size_t rs_length = hr->rem_set()->occupied();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1936 _recorded_rs_lengths += rs_length;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1937 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1938
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1939 void
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1940 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	1941 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	1942 ++_recorded_non_young_regions;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1943 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	1944 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1945
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1946 void
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1947 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	1948 _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	1949 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1950
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1951 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	1952 #if PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1953 _recorded_young_bytes = bytes;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1954 #endif // PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1955 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1956
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1957 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	1958 _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	1959 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1960
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1961 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	1962 _predicted_bytes_to_copy = bytes;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1963 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1964
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1965 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1966 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	1967 // 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	1968 // 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	1969 _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	1970
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1971 #if PREDICTIONS_VERBOSE
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1972 _predicted_pending_cards = predict_pending_cards();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1973 _predicted_rs_lengths = _recorded_rs_lengths + predict_rs_length_diff();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1974 if (full_young_gcs())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1975 _predicted_cards_scanned += predict_young_card_num(_predicted_rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1976 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1977 _predicted_cards_scanned +=
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1978 predict_non_young_card_num(_predicted_rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1979 _recorded_region_num = _recorded_young_regions + _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_rs_update_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1982 predict_rs_update_time_ms(_g1->pending_card_num());
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 predict_rs_scan_time_ms(_predicted_cards_scanned);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1985 _predicted_object_copy_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1986 predict_object_copy_time_ms(_predicted_bytes_to_copy);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1987 _predicted_constant_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1988 predict_constant_other_time_ms();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1989 _predicted_young_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1990 predict_young_other_time_ms(_recorded_young_regions);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1991 _predicted_non_young_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1992 predict_non_young_other_time_ms(_recorded_non_young_regions);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1993
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1994 _predicted_pause_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1995 _predicted_rs_update_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1996 _predicted_rs_scan_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1997 _predicted_object_copy_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1998 _predicted_constant_other_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1999 _predicted_young_other_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2000 _predicted_non_young_other_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2001 #endif // PREDICTIONS_VERBOSE
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2002 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2003
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2004 void G1CollectorPolicy::check_if_region_is_too_expensive(double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2005 predicted_time_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2006 // 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	2007 // 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	2008 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	2009 ergo_verbose2(ErgoPartiallyYoungGCs,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2010 "request partially-young GCs end",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2011 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	2012 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	2013 ergo_format_ms("threshold"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2014 predicted_time_ms, _expensive_region_limit_ms);
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2015 // no point in doing another partial one
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2016 _should_revert_to_full_young_gcs = true;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2017 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2018 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2019
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2020 // </NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2021
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 void G1CollectorPolicy::update_recent_gc_times(double end_time_sec,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2024 double elapsed_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2025 _recent_gc_times_ms->add(elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2026 _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	2027 _prev_collection_pause_end_ms = end_time_sec * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2028 }
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 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	2031 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	2032 return (double) MaxGCPauseMillis;
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	2033 }
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	2034 return _recent_pause_times_ms->avg();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2035 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2036
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	2037 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	2038 if (_recent_rs_scan_times_ms->num() == 0) {
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2039 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	2040 }
14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	2041 return _recent_rs_scan_times_ms->avg();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2042 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2043
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2044 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	2045 assert(_recent_rs_scan_times_ms->num() ==
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2046 _recent_pause_times_ms->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2047 assert(_recent_pause_times_ms->num() ==
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2048 _recent_CS_bytes_used_before->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2049 assert(_recent_CS_bytes_used_before->num() ==
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2050 _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	2051
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2052 return _recent_pause_times_ms->num();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2053 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2054
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2055 double G1CollectorPolicy::recent_avg_survival_fraction() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2056 return recent_avg_survival_fraction_work(_recent_CS_bytes_surviving,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2057 _recent_CS_bytes_used_before);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2058 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2059
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2060 double G1CollectorPolicy::last_survival_fraction() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2061 return last_survival_fraction_work(_recent_CS_bytes_surviving,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2062 _recent_CS_bytes_used_before);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2063 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2064
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2065 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2066 G1CollectorPolicy::recent_avg_survival_fraction_work(TruncatedSeq* surviving,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2067 TruncatedSeq* before) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2068 assert(surviving->num() == before->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2069 if (before->sum() > 0.0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2070 double recent_survival_rate = surviving->sum() / before->sum();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2071 // We exempt parallel collection from this check because Alloc Buffer
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2072 // fragmentation can produce negative collections.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2073 // 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	2074 // 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	2075 // (DLD, 10/05.)
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	2076 assert((true \|\| G1CollectedHeap::use_parallel_gc_threads()) \|\|
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2077 _g1->evacuation_failed() \|\|
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2078 recent_survival_rate <= 1.0, "Or bad frac");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2079 return recent_survival_rate;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2080 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2081 return 1.0; // Be conservative.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2082 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2083 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2084
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2085 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2086 G1CollectorPolicy::last_survival_fraction_work(TruncatedSeq* surviving,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2087 TruncatedSeq* before) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2088 assert(surviving->num() == before->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2089 if (surviving->num() > 0 && before->last() > 0.0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2090 double last_survival_rate = surviving->last() / before->last();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2091 // We exempt parallel collection from this check because Alloc Buffer
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2092 // fragmentation can produce negative collections.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2093 // 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	2094 // 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	2095 // (DLD, 10/05.)
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	2096 assert((true \|\| G1CollectedHeap::use_parallel_gc_threads()) \|\|
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2097 last_survival_rate <= 1.0, "Or bad frac");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2098 return last_survival_rate;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2099 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2100 return 1.0;
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 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2103
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2104 static const int survival_min_obs = 5;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2105 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	2106 static const double min_survival_rate = 0.1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2107
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2108 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2109 G1CollectorPolicy::conservative_avg_survival_fraction_work(double avg,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2110 double latest) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2111 double res = avg;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2112 if (number_of_recent_gcs() < survival_min_obs) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2113 res = MAX2(res, survival_min_obs_limits[number_of_recent_gcs()]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2114 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2115 res = MAX2(res, latest);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2116 res = MAX2(res, min_survival_rate);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2117 // In the parallel case, LAB fragmentation can produce "negative
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2118 // collections"; so can evac failure. Cap at 1.0
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2119 res = MIN2(res, 1.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2120 return res;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2121 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2122
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2123 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	2124 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	2125 double threshold = _gc_overhead_perc;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2126 if (recent_gc_overhead > threshold) {
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2127 // We will double the existing space, or take
20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2128 // G1ExpandByPercentOfAvailable % of the available expansion
20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2129 // space, whichever is smaller, bounded below by a minimum
20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2130 // expansion (unless that's all that's left.)
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2131 const size_t min_expand_bytes = 1*M;
2188 c33825b68624 6923430: G1: assert(res != 0,"This should have worked.") johnc parents: 2152 diff changeset	2132 size_t reserved_bytes = _g1->max_capacity();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2133 size_t committed_bytes = _g1->capacity();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2134 size_t uncommitted_bytes = reserved_bytes - committed_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2135 size_t expand_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2136 size_t expand_bytes_via_pct =
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2137 uncommitted_bytes * G1ExpandByPercentOfAvailable / 100;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2138 expand_bytes = MIN2(expand_bytes_via_pct, committed_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2139 expand_bytes = MAX2(expand_bytes, min_expand_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2140 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	2141
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2142 ergo_verbose5(ErgoHeapSizing,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2143 "attempt heap expansion",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2144 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	2145 "threshold after GC")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2146 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	2147 ergo_format_perc("threshold")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2148 ergo_format_byte("uncommitted")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2149 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	2150 recent_gc_overhead, threshold,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2151 uncommitted_bytes,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2152 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	2153
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2154 return expand_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2155 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2156 return 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2157 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2158 }
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 class CountCSClosure: public HeapRegionClosure {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2161 G1CollectorPolicy* _g1_policy;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2162 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2163 CountCSClosure(G1CollectorPolicy* g1_policy) :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2164 _g1_policy(g1_policy) {}
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2165 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2166 _g1_policy->_bytes_in_collection_set_before_gc += r->used();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2167 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2168 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2169 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2170
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2171 void G1CollectorPolicy::count_CS_bytes_used() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2172 CountCSClosure cs_closure(this);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2173 _g1->collection_set_iterate(&cs_closure);
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
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	2176 void G1CollectorPolicy::print_summary(int level,
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	2177 const char* str,
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	2178 NumberSeq* seq) const {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2179 double sum = seq->sum();
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2180 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	2181 str, sum / 1000.0, seq->avg());
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
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	2184 void G1CollectorPolicy::print_summary_sd(int level,
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	2185 const char* str,
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	2186 NumberSeq* seq) const {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2187 print_summary(level, str, seq);
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2188 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	2189 seq->num(), seq->sd(), seq->maximum());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2190 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2191
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2192 void G1CollectorPolicy::check_other_times(int level,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2193 NumberSeq* other_times_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2194 NumberSeq* calc_other_times_ms) const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2195 bool should_print = false;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2196 LineBuffer buf(level + 2);
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 double max_sum = MAX2(fabs(other_times_ms->sum()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2199 fabs(calc_other_times_ms->sum()));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2200 double min_sum = MIN2(fabs(other_times_ms->sum()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2201 fabs(calc_other_times_ms->sum()));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2202 double sum_ratio = max_sum / min_sum;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2203 if (sum_ratio > 1.1) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2204 should_print = true;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2205 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	2206 }
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 double max_avg = MAX2(fabs(other_times_ms->avg()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2209 fabs(calc_other_times_ms->avg()));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2210 double min_avg = MIN2(fabs(other_times_ms->avg()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2211 fabs(calc_other_times_ms->avg()));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2212 double avg_ratio = max_avg / min_avg;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2213 if (avg_ratio > 1.1) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2214 should_print = true;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2215 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	2216 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2217
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2218 if (other_times_ms->sum() < -0.01) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2219 buf.append_and_print_cr("## RECORDED 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 (other_times_ms->avg() < -0.01) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2223 buf.append_and_print_cr("## RECORDED OTHER AVG IS NEGATIVE ###");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2224 }
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 if (calc_other_times_ms->sum() < -0.01) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2227 should_print = true;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2228 buf.append_and_print_cr("## CALCULATED OTHER SUM IS NEGATIVE ###");
342 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 if (calc_other_times_ms->avg() < -0.01) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2232 should_print = true;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2233 buf.append_and_print_cr("## CALCULATED OTHER AVG IS NEGATIVE ###");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2234 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2235
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2236 if (should_print)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2237 print_summary(level, "Other(Calc)", calc_other_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2238 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2239
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2240 void G1CollectorPolicy::print_summary(PauseSummary* summary) const {
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	2241 bool parallel = G1CollectedHeap::use_parallel_gc_threads();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2242 MainBodySummary* body_summary = summary->main_body_summary();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2243 if (summary->get_total_seq()->num() > 0) {
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2244 print_summary_sd(0, "Evacuation Pauses", summary->get_total_seq());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2245 if (body_summary != NULL) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2246 print_summary(1, "SATB Drain", body_summary->get_satb_drain_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2247 if (parallel) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2248 print_summary(1, "Parallel Time", body_summary->get_parallel_seq());
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	2249 print_summary(2, "Ext Root Scanning", body_summary->get_ext_root_scan_seq());
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	2250 print_summary(2, "Mark Stack Scanning", body_summary->get_mark_stack_scan_seq());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2251 print_summary(2, "Update RS", body_summary->get_update_rs_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2252 print_summary(2, "Scan RS", body_summary->get_scan_rs_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2253 print_summary(2, "Object Copy", body_summary->get_obj_copy_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2254 print_summary(2, "Termination", body_summary->get_termination_seq());
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	2255 print_summary(2, "Parallel Other", body_summary->get_parallel_other_seq());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2256 {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2257 NumberSeq* other_parts[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2258 body_summary->get_ext_root_scan_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2259 body_summary->get_mark_stack_scan_seq(),
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	2260 body_summary->get_update_rs_seq(),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2261 body_summary->get_scan_rs_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2262 body_summary->get_obj_copy_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2263 body_summary->get_termination_seq()
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2264 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2265 NumberSeq calc_other_times_ms(body_summary->get_parallel_seq(),
1779 6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2266 6, other_parts);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2267 check_other_times(2, body_summary->get_parallel_other_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2268 &calc_other_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2269 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2270 } else {
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	2271 print_summary(1, "Ext Root Scanning", body_summary->get_ext_root_scan_seq());
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	2272 print_summary(1, "Mark Stack Scanning", body_summary->get_mark_stack_scan_seq());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2273 print_summary(1, "Update RS", body_summary->get_update_rs_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2274 print_summary(1, "Scan RS", body_summary->get_scan_rs_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2275 print_summary(1, "Object Copy", body_summary->get_obj_copy_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2276 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2277 }
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	2278 print_summary(1, "Mark Closure", body_summary->get_mark_closure_seq());
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	2279 print_summary(1, "Clear CT", body_summary->get_clear_ct_seq());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2280 print_summary(1, "Other", summary->get_other_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2281 {
1779 6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2282 if (body_summary != NULL) {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2283 NumberSeq calc_other_times_ms;
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2284 if (parallel) {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2285 // parallel
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2286 NumberSeq* other_parts[] = {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2287 body_summary->get_satb_drain_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2288 body_summary->get_parallel_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2289 body_summary->get_clear_ct_seq()
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2290 };
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2291 calc_other_times_ms = NumberSeq(summary->get_total_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2292 3, other_parts);
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2293 } else {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2294 // serial
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2295 NumberSeq* other_parts[] = {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2296 body_summary->get_satb_drain_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2297 body_summary->get_update_rs_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2298 body_summary->get_ext_root_scan_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2299 body_summary->get_mark_stack_scan_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2300 body_summary->get_scan_rs_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2301 body_summary->get_obj_copy_seq()
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2302 };
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2303 calc_other_times_ms = NumberSeq(summary->get_total_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2304 6, other_parts);
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2305 }
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2306 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	2307 }
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 } else {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2310 LineBuffer(1).append_and_print_cr("none");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2311 }
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2312 LineBuffer(0).append_and_print_cr("");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2313 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2314
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2315 void G1CollectorPolicy::print_tracing_info() const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2316 if (TraceGen0Time) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2317 gclog_or_tty->print_cr("ALL PAUSES");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2318 print_summary_sd(0, "Total", _all_pause_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2319 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2320 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2321 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	2322 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	2323 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2324
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2325 gclog_or_tty->print_cr("EVACUATION PAUSES");
96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2326 print_summary(_summary);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2327
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2328 gclog_or_tty->print_cr("MISC");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2329 print_summary_sd(0, "Stop World", _all_stop_world_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2330 print_summary_sd(0, "Yields", _all_yield_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2331 for (int i = 0; i < _aux_num; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2332 if (_all_aux_times_ms[i].num() > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2333 char buffer[96];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2334 sprintf(buffer, "Aux%d", i);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2335 print_summary_sd(0, buffer, &_all_aux_times_ms[i]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2336 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2337 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2338
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2339 size_t all_region_num = _region_num_young + _region_num_tenured;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2340 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	2341 "Tenured %8d (%6.2lf%%)",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2342 all_region_num,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2343 _region_num_young,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2344 (double) _region_num_young / (double) all_region_num * 100.0,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2345 _region_num_tenured,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2346 (double) _region_num_tenured / (double) all_region_num * 100.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2347 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2348 if (TraceGen1Time) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2349 if (_all_full_gc_times_ms->num() > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2350 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	2351 _all_full_gc_times_ms->num(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2352 _all_full_gc_times_ms->sum() / 1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2353 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	2354 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	2355 _all_full_gc_times_ms->sd(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2356 _all_full_gc_times_ms->maximum());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2357 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2358 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2359 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2360
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2361 void G1CollectorPolicy::print_yg_surv_rate_info() const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2362 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2363 _short_lived_surv_rate_group->print_surv_rate_summary();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2364 // add this call for any other surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2365 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2366 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2367
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2368 void G1CollectorPolicy::update_region_num(bool young) {
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	2369 if (young) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2370 ++_region_num_young;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2371 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2372 ++_region_num_tenured;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2373 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2374 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2375
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2376 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2377 // for debugging, bit of a hack...
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2378 static char*
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2379 region_num_to_mbs(int length) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2380 static char buffer[64];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2381 double bytes = (double) (length * HeapRegion::GrainBytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2382 double mbs = bytes / (double) (1024 * 1024);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2383 sprintf(buffer, "%7.2lfMB", mbs);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2384 return buffer;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2385 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2386 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2387
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2388 size_t G1CollectorPolicy::max_regions(int purpose) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2389 switch (purpose) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2390 case GCAllocForSurvived:
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2391 return _max_survivor_regions;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2392 case GCAllocForTenured:
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2393 return REGIONS_UNLIMITED;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2394 default:
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2395 ShouldNotReachHere();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2396 return REGIONS_UNLIMITED;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2397 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2398 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2399
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	2400 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	2401 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	2402 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	2403 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	2404 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	2405 // 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	2406 // 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	2407 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	2408 } else {
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2409 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	2410 }
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2411 _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	2412 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	2413 }
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2414
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2415 // Calculates survivor space parameters.
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	2416 void G1CollectorPolicy::update_survivors_policy() {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	2417 double max_survivor_regions_d =
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	2418 (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	2419 // 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	2420 // 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	2421 _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	2422
3868 ae73da50be4b 7081064: G1: remove develop params G1FixedSurvivorSpaceSize, G1FixedTenuringThreshold, and G1FixedEdenSize tonyp parents: 3867 diff changeset	2423 _tenuring_threshold = _survivors_age_table.compute_tenuring_threshold(
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2424 HeapRegion::GrainWords * _max_survivor_regions);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2425 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2426
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2427 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2428 class HRSortIndexIsOKClosure: public HeapRegionClosure {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2429 CollectionSetChooser* _chooser;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2430 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2431 HRSortIndexIsOKClosure(CollectionSetChooser* chooser) :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2432 _chooser(chooser) {}
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2433
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2434 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2435 if (!r->continuesHumongous()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2436 assert(_chooser->regionProperlyOrdered(r), "Ought to be.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2437 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2438 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2439 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2440 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2441
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2442 bool G1CollectorPolicy::assertMarkedBytesDataOK() {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2443 HRSortIndexIsOKClosure cl(_collectionSetChooser);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2444 _g1->heap_region_iterate(&cl);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2445 return true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2446 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2447 #endif
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2448
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2449 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	2450 GCCause::Cause gc_cause) {
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2451 bool during_cycle = _g1->concurrent_mark()->cmThread()->during_cycle();
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2452 if (!during_cycle) {
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2453 ergo_verbose1(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2454 "request concurrent cycle initiation",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2455 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	2456 ergo_format_str("GC cause"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2457 GCCause::to_string(gc_cause));
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2458 set_initiate_conc_mark_if_possible();
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2459 return true;
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2460 } else {
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2461 ergo_verbose1(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2462 "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	2463 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	2464 ergo_format_str("GC cause"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2465 GCCause::to_string(gc_cause));
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2466 return false;
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2467 }
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2468 }
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2469
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2470 void
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2471 G1CollectorPolicy::decide_on_conc_mark_initiation() {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2472 // 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	2473 // initial-mark pause.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2474
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2475 // 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	2476 // 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	2477 // 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	2478 // initial-mark pause).
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2479 assert(!during_initial_mark_pause(), "pre-condition");
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 if (initiate_conc_mark_if_possible()) {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2482 // 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	2483 // 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	2484 // concurrent marking cycle. So we might initiate one.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2485
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2486 bool during_cycle = _g1->concurrent_mark()->cmThread()->during_cycle();
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2487 if (!during_cycle) {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2488 // 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	2489 // 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	2490 // initiate a new cycle.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2491
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2492 set_during_initial_mark_pause();
3982 273b46400613 7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835 johnc parents: 3979 diff changeset	2493 // We do not allow non-full young GCs during marking.
273b46400613 7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835 johnc parents: 3979 diff changeset	2494 if (!full_young_gcs()) {
273b46400613 7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835 johnc parents: 3979 diff changeset	2495 set_full_young_gcs(true);
273b46400613 7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835 johnc parents: 3979 diff changeset	2496 ergo_verbose0(ErgoPartiallyYoungGCs,
273b46400613 7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835 johnc parents: 3979 diff changeset	2497 "end partially-young GCs",
273b46400613 7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835 johnc parents: 3979 diff changeset	2498 ergo_format_reason("concurrent cycle is about to start"));
273b46400613 7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835 johnc parents: 3979 diff changeset	2499 }
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2500
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2501 // 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	2502 // we've already acted on it.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2503 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	2504
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2505 ergo_verbose0(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2506 "initiate concurrent cycle",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2507 ergo_format_reason("concurrent cycle initiation requested"));
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2508 } else {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2509 // The concurrent marking thread is still finishing up the
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2510 // 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	2511 // overlap. In particular, the concurrent marking thread might
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2512 // 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	2513 // 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	2514 // 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	2515 // 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	2516 // 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	2517 // periodically yields while clearing the next marking bitmap
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2518 // 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	2519 // 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	2520 // 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	2521 ergo_verbose0(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2522 "do not initiate concurrent cycle",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2523 ergo_format_reason("concurrent cycle already in progress"));
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2524 }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2525 }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2526 }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2527
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2528 class KnownGarbageClosure: public HeapRegionClosure {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2529 CollectionSetChooser* _hrSorted;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2530
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2531 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2532 KnownGarbageClosure(CollectionSetChooser* hrSorted) :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2533 _hrSorted(hrSorted)
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2536 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2537 // We only include humongous regions in collection
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2538 // sets when concurrent mark shows that their contained object is
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2539 // unreachable.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2540
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2541 // Do we have any marking information for this region?
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2542 if (r->is_marked()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2543 // We don't include humongous regions in collection
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2544 // 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	2545 // cycle. We also don't include young regions because we must
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2546 // include them in the next collection pause.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2547 if (!r->isHumongous() && !r->is_young()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2548 _hrSorted->addMarkedHeapRegion(r);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2549 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2550 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2551 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2552 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2553 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2554
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2555 class ParKnownGarbageHRClosure: public HeapRegionClosure {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2556 CollectionSetChooser* _hrSorted;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2557 jint _marked_regions_added;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2558 jint _chunk_size;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2559 jint _cur_chunk_idx;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2560 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	2561 int _worker;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2562 int _invokes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2563
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2564 void get_new_chunk() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2565 _cur_chunk_idx = _hrSorted->getParMarkedHeapRegionChunk(_chunk_size);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2566 _cur_chunk_end = _cur_chunk_idx + _chunk_size;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2567 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2568 void add_region(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2569 if (_cur_chunk_idx == _cur_chunk_end) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2570 get_new_chunk();
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 assert(_cur_chunk_idx < _cur_chunk_end, "postcondition");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2573 _hrSorted->setMarkedHeapRegion(_cur_chunk_idx, r);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2574 _marked_regions_added++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2575 _cur_chunk_idx++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2576 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2577
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2578 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2579 ParKnownGarbageHRClosure(CollectionSetChooser* hrSorted,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2580 jint chunk_size,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2581 int worker) :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2582 _hrSorted(hrSorted), _chunk_size(chunk_size), _worker(worker),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2583 _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	2584 _invokes(0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2585 {}
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 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2588 // We only include humongous regions in collection
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2589 // sets when concurrent mark shows that their contained object is
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2590 // unreachable.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2591 _invokes++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2592
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2593 // Do we have any marking information for this region?
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2594 if (r->is_marked()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2595 // We don't include humongous regions in collection
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2596 // 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	2597 // cycle.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2598 // We also do not include young regions in collection sets
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2599 if (!r->isHumongous() && !r->is_young()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2600 add_region(r);
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 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2604 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2605 jint marked_regions_added() { return _marked_regions_added; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2606 int invokes() { return _invokes; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2607 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2608
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2609 class ParKnownGarbageTask: public AbstractGangTask {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2610 CollectionSetChooser* _hrSorted;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2611 jint _chunk_size;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2612 G1CollectedHeap* _g1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2613 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2614 ParKnownGarbageTask(CollectionSetChooser* hrSorted, jint chunk_size) :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2615 AbstractGangTask("ParKnownGarbageTask"),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2616 _hrSorted(hrSorted), _chunk_size(chunk_size),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2617 _g1(G1CollectedHeap::heap())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2618 {}
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2619
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2620 void work(int i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2621 ParKnownGarbageHRClosure parKnownGarbageCl(_hrSorted, _chunk_size, i);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2622 // Back to zero for the claim value.
355 0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2623 _g1->heap_region_par_iterate_chunked(&parKnownGarbageCl, i,
0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2624 HeapRegion::InitialClaimValue);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2625 jint regions_added = parKnownGarbageCl.marked_regions_added();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2626 _hrSorted->incNumMarkedHeapRegions(regions_added);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2627 if (G1PrintParCleanupStats) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2628 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	2629 i, parKnownGarbageCl.invokes(), regions_added);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2630 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2631 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2632 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2633
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2634 void
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2635 G1CollectorPolicy::record_concurrent_mark_cleanup_end() {
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2636 double start_sec;
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2637 if (G1PrintParCleanupStats) {
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2638 start_sec = os::elapsedTime();
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2639 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2640
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2641 _collectionSetChooser->clearMarkedHeapRegions();
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2642 double clear_marked_end_sec;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2643 if (G1PrintParCleanupStats) {
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2644 clear_marked_end_sec = os::elapsedTime();
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2645 gclog_or_tty->print_cr(" clear marked regions: %8.3f ms.",
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2646 (clear_marked_end_sec - start_sec) * 1000.0);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2647 }
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2648
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	2649 if (G1CollectedHeap::use_parallel_gc_threads()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2650 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	2651 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	2652 const size_t WorkUnit =
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2653 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	2654 MinWorkUnit);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2655 _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	2656 WorkUnit);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2657 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	2658 (int) WorkUnit);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2659 _g1->workers()->run_task(&parKnownGarbageTask);
355 0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2660
0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2661 assert(_g1->check_heap_region_claim_values(HeapRegion::InitialClaimValue),
0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2662 "sanity check");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2663 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2664 KnownGarbageClosure knownGarbagecl(_collectionSetChooser);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2665 _g1->heap_region_iterate(&knownGarbagecl);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2666 }
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2667 double known_garbage_end_sec;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2668 if (G1PrintParCleanupStats) {
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2669 known_garbage_end_sec = os::elapsedTime();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2670 gclog_or_tty->print_cr(" compute known garbage: %8.3f ms.",
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2671 (known_garbage_end_sec - clear_marked_end_sec) * 1000.0);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2672 }
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2673
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2674 _collectionSetChooser->sortMarkedHeapRegions();
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2675 double end_sec = os::elapsedTime();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2676 if (G1PrintParCleanupStats) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2677 gclog_or_tty->print_cr(" sorting: %8.3f ms.",
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2678 (end_sec - known_garbage_end_sec) * 1000.0);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2679 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2680
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2681 double elapsed_time_ms = (end_sec - _mark_cleanup_start_sec) * 1000.0;
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2682 _concurrent_mark_cleanup_times_ms->add(elapsed_time_ms);
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2683 _cur_mark_stop_world_time_ms += elapsed_time_ms;
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2684 _prev_collection_pause_end_ms += elapsed_time_ms;
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2685 _mmu_tracker->add_pause(_mark_cleanup_start_sec, end_sec, true);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2686 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2687
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2688 // 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	2689 void G1CollectorPolicy::
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2690 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	2691 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	2692 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	2693
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2694 if (_g1->mark_in_progress())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2695 _g1->concurrent_mark()->registerCSetRegion(hr);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2696
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2697 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	2698 hr->set_in_collection_set(true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2699 hr->set_next_in_collection_set(_collection_set);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2700 _collection_set = hr;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2701 _collection_set_size++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2702 _collection_set_bytes_used_before += hr->used();
526 818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 470 diff changeset	2703 _g1->register_region_with_in_cset_fast_test(hr);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2704 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2705
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2706 // 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	2707 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	2708 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	2709
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2710 _inc_cset_head = NULL;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2711 _inc_cset_tail = NULL;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2712 _inc_cset_size = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2713 _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	2714
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2715 _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	2716
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2717 _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	2718 _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	2719 _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	2720 _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	2721 _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	2722 _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	2723 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2724
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2725 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	2726 // 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	2727 // * 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	2728 // evacuation pause,
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2729 // * 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	2730 // 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	2731 // * 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	2732 // 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	2733 // 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	2734 // 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	2735 // 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	2736 // refine thread (RSet sampling).
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2737
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2738 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	2739 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	2740
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2741 _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	2742 _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	2743
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2744 _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	2745
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2746 // 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	2747 // 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	2748 // 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	2749 // rset sampling code
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2750 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	2751 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	2752
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2753 #if PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2754 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	2755 _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	2756
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2757 // 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	2758 _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	2759
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2760 // 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	2761 // 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	2762 // 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	2763 // rset sampling code
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2764 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	2765 #endif // PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2766 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2767
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2768 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	2769 // 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	2770 // 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	2771 // 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	2772 // 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	2773
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2774 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	2775 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	2776
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2777 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	2778 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	2779 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	2780
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2781 // 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	2782 // 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	2783 _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	2784 _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	2785
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2786 _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	2787
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2788 // 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	2789 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	2790 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	2791
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2792 #if PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2793 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	2794 _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	2795
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2796 // 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	2797 _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	2798
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2799 // 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	2800 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	2801 #endif // PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2802 }
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 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	2805 // 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	2806 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	2807
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2808 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	2809 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	2810 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2811
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2812 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	2813 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	2814 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	2815 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	2816
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2817 // 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	2818 // 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	2819 // 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	2820 // 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	2821 // 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	2822 // 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	2823
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2824 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	2825 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	2826
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2827 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	2828 _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	2829
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2830 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	2831 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	2832 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	2833
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2834 _inc_cset_size++;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2835 _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	2836
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2837 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	2838 ++_inc_cset_young_index;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2839 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2840
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2841 // 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	2842 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	2843 // 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	2844 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	2845
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2846 // Do the 'common' stuff
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2847 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	2848
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2849 // 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	2850 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	2851 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	2852 _inc_cset_head = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2853 } else {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2854 _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	2855 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2856 _inc_cset_tail = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2857 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2858
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2859 // 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	2860 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	2861 // 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	2862 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	2863
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2864 // Do the 'common' stuff
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2865 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	2866
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2867 // 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	2868 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	2869 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	2870 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	2871 _inc_cset_tail = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2872 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2873 _inc_cset_head = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2874 }
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 #ifndef PRODUCT
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2877 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	2878 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	2879
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2880 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	2881 HeapRegion* csr = list_head;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2882 while (csr != NULL) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2883 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	2884 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	2885 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	2886 "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	2887 csr->bottom(), csr->end(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2888 csr->top(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2889 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	2890 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	2891 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	2892 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	2893 csr->is_young(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2894 csr->is_survivor());
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2895 csr = next;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2896 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2897 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2898 #endif // !PRODUCT
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2899
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	2900 void G1CollectorPolicy::choose_collection_set(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	2901 // 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	2902 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	2903
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2904 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	2905
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2906 start_recording_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2907
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2908 guarantee(target_pause_time_ms > 0.0,
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2909 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	2910 target_pause_time_ms));
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2911 guarantee(_collection_set == NULL, "Precondition");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2912
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2913 double base_time_ms = predict_base_elapsed_time_ms(_pending_cards);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2914 double predicted_pause_time_ms = base_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2915
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2916 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	2917
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2918 ergo_verbose3(ErgoCSetConstruction \| ErgoHigh,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2919 "start choosing CSet",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2920 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	2921 ergo_format_ms("remaining time")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2922 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	2923 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	2924
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2925 // 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	2926 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	2927 if (time_remaining_ms < threshold) {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2928 double prev_time_remaining_ms = time_remaining_ms;
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2929 time_remaining_ms = 0.50 * target_pause_time_ms;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2930 _within_target = false;
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2931 ergo_verbose3(ErgoCSetConstruction,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2932 "adjust remaining time",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2933 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	2934 ergo_format_ms("remaining time")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2935 ergo_format_ms("threshold")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2936 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	2937 prev_time_remaining_ms, threshold, time_remaining_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2938 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2939 _within_target = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2940 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2941
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2942 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	2943
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2944 HeapRegion* hr;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2945 double young_start_time_sec = os::elapsedTime();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2946
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2947 _collection_set_bytes_used_before = 0;
96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2948 _collection_set_size = 0;
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2949 _young_cset_length = 0;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2950 _last_young_gc_full = full_young_gcs() ? true : false;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2951
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2952 if (_last_young_gc_full) {
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2953 ++_full_young_pause_num;
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2954 } else {
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2955 ++_partial_young_pause_num;
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2956 }
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2957
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2958 // 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	2959 // 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	2960 // [Newly Young Regions ++ Survivors from last pause].
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2961
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2962 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	2963 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	2964 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	2965 hr = young_list->first_survivor_region();
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2966 while (hr != NULL) {
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2967 assert(hr->is_survivor(), "badly formed young list");
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2968 hr->set_young();
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2969 hr = hr->get_next_young_region();
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2970 }
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2971
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2972 // 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	2973 young_list->clear_survivors();
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2974
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2975 if (_g1->mark_in_progress())
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2976 _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	2977
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2978 _young_cset_length = _inc_cset_young_index;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2979 _collection_set = _inc_cset_head;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2980 _collection_set_size = _inc_cset_size;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2981 _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	2982 time_remaining_ms -= _inc_cset_predicted_elapsed_time_ms;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2983 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	2984
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2985 ergo_verbose3(ErgoCSetConstruction \| ErgoHigh,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2986 "add young regions to CSet",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2987 ergo_format_region("eden")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2988 ergo_format_region("survivors")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2989 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	2990 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	2991 _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	2992
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2993 // The number of recorded young regions is the incremental
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2994 // collection set's current size
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2995 set_recorded_young_regions(_inc_cset_size);
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2996 set_recorded_rs_lengths(_inc_cset_recorded_rs_lengths);
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2997 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	2998 #if PREDICTIONS_VERBOSE
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2999 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	3000 #endif // PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	3001
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3002 assert(_inc_cset_size == young_list->length(), "Invariant");
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	3003
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	3004 double young_end_time_sec = os::elapsedTime();
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	3005 _recorded_young_cset_choice_time_ms =
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	3006 (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	3007
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	3008 // We are doing young collections so reset this.
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	3009 non_young_start_time_sec = young_end_time_sec;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	3010
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	3011 if (!full_young_gcs()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3012 bool should_continue = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3013 NumberSeq seq;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3014 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	3015
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3016 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	3017 double prev_predicted_pause_time_ms = predicted_pause_time_ms;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3018 do {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3019 hr = _collectionSetChooser->getNextMarkedRegion(time_remaining_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3020 avg_prediction);
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	3021 if (hr != NULL) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3022 double predicted_time_ms = predict_region_elapsed_time_ms(hr, false);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3023 time_remaining_ms -= predicted_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3024 predicted_pause_time_ms += predicted_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3025 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	3026 record_non_young_cset_region(hr);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3027 seq.add(predicted_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3028 avg_prediction = seq.avg() + seq.sd();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3029 }
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3030
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3031 should_continue = true;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3032 if (hr == NULL) {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3033 // 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	3034 // 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	3035 should_continue = false;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3036 } else {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3037 if (adaptive_young_list_length()) {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3038 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	3039 ergo_verbose1(ErgoCSetConstruction,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3040 "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	3041 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	3042 ergo_format_ms("remaining time"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3043 time_remaining_ms);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3044 should_continue = false;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3045 }
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3046 } 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	3047 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	3048 ergo_verbose2(ErgoCSetConstruction,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3049 "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	3050 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	3051 ergo_format_region("CSet")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3052 ergo_format_region("young target"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3053 _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	3054 should_continue = false;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3055 }
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3056 }
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3057 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3058 } while (should_continue);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3059
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3060 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	3061 _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	3062 ergo_verbose2(ErgoCSetConstruction,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3063 "request partially-young GCs end",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3064 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	3065 ergo_format_region("CSet")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3066 ergo_format_region("young target"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3067 _collection_set_size, _young_list_fixed_length);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3068 _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	3069 }
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 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	3072
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3073 ergo_verbose2(ErgoCSetConstruction \| ErgoHigh,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3074 "add old regions to CSet",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3075 ergo_format_region("old")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3076 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	3077 old_region_num,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3078 predicted_pause_time_ms - prev_predicted_pause_time_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3079 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3080
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	3081 stop_incremental_cset_building();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	3082
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3083 count_CS_bytes_used();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3084
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3085 end_recording_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3086
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3087 ergo_verbose5(ErgoCSetConstruction,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3088 "finish choosing CSet",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3089 ergo_format_region("eden")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3090 ergo_format_region("survivors")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3091 ergo_format_region("old")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	3092 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	3093 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	3094 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	3095 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	3096
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3097 double non_young_end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3098 _recorded_non_young_cset_choice_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3099 (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	3100 }

Mercurial > hg > truffle

annotate src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp @ 4023:c6a6e936dc68