graal-compiler: src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp annotate

annotate src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp @ 10098:71013d764f6e

8010780: G1: Eden occupancy/capacity output wrong after a full GC Summary: Move the calculation and recording of eden capacity to the start of a GC and print a detailed heap transition for full GCs. Reviewed-by: tschatzl, jmasa

author	johnc
date	Wed, 10 Apr 2013 10:57:34 -0700
parents	27714220e50e
children	9aa8d8037ee3

rev	line source
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1 /*
10098 71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	2 * Copyright (c) 2001, 2013, 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"
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	32 #include "gc_implementation/g1/g1GCPhaseTimes.hpp"
6007 5c86f8211d1e 7160728: Introduce an extra logging level for G1 logging brutisso parents: 5988 diff changeset	33 #include "gc_implementation/g1/g1Log.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	34 #include "gc_implementation/g1/heapRegionRemSet.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	35 #include "gc_implementation/shared/gcPolicyCounters.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	36 #include "runtime/arguments.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	37 #include "runtime/java.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	38 #include "runtime/mutexLocker.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	39 #include "utilities/debug.hpp"
342 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 // Different defaults for different number of GC threads
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	42 // 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	43 // numbers of GC threads and choosing them based on the results
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	44
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	45 // all the same
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	46 static double rs_length_diff_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	47 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	48 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	49
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	50 static double cost_per_card_ms_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	51 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	52 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	53
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	54 // all the same
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	55 static double young_cards_per_entry_ratio_defaults[] = {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	56 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	57 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	58
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	59 static double cost_per_entry_ms_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	60 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	61 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	62
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	63 static double cost_per_byte_ms_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	64 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	65 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	66
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	67 // these should be pretty consistent
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	68 static double constant_other_time_ms_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	69 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	70 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	71
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 static double young_other_cost_per_region_ms_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	74 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	75 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	76
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	77 static double non_young_other_cost_per_region_ms_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	78 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	79 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	80
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	81 G1CollectorPolicy::G1CollectorPolicy() :
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	82 _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	83 ? ParallelGCThreads : 1),
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	84
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	85 _recent_gc_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	86 _stop_world_start(0.0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	87
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	88 _concurrent_mark_remark_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	89 _concurrent_mark_cleanup_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	90
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	91 _alloc_rate_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	92 _prev_collection_pause_end_ms(0.0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	93 _rs_length_diff_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	94 _cost_per_card_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	95 _young_cards_per_entry_ratio_seq(new TruncatedSeq(TruncatedSeqLength)),
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	96 _mixed_cards_per_entry_ratio_seq(new TruncatedSeq(TruncatedSeqLength)),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	97 _cost_per_entry_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	98 _mixed_cost_per_entry_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	99 _cost_per_byte_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	100 _cost_per_byte_ms_during_cm_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	101 _constant_other_time_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	102 _young_other_cost_per_region_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	103 _non_young_other_cost_per_region_ms_seq(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	104 new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	105
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	106 _pending_cards_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	107 _rs_lengths_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	108
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	109 _pause_time_target_ms((double) MaxGCPauseMillis),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	110
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	111 _gcs_are_young(true),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	112
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	113 _during_marking(false),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	114 _in_marking_window(false),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	115 _in_marking_window_im(false),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	116
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	117 _recent_prev_end_times_for_all_gcs_sec(
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	118 new TruncatedSeq(NumPrevPausesForHeuristics)),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	119
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	120 _recent_avg_pause_time_ratio(0.0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	121
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	122 _initiate_conc_mark_if_possible(false),
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	123 _during_initial_mark_pause(false),
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	124 _last_young_gc(false),
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	125 _last_gc_was_young(false),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	126
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	127 _eden_bytes_before_gc(0),
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	128 _survivor_bytes_before_gc(0),
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	129 _capacity_before_gc(0),
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	130
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	131 _eden_cset_region_length(0),
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	132 _survivor_cset_region_length(0),
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	133 _old_cset_region_length(0),
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	134
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	135 _collection_set(NULL),
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	136 _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	137
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	138 // Incremental CSet attributes
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	139 _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	140 _inc_cset_head(NULL),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	141 _inc_cset_tail(NULL),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	142 _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	143 _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	144 _inc_cset_recorded_rs_lengths(0),
4727 67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	145 _inc_cset_recorded_rs_lengths_diffs(0),
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	146 _inc_cset_predicted_elapsed_time_ms(0.0),
4727 67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	147 _inc_cset_predicted_elapsed_time_ms_diffs(0.0),
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	148
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	149 #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	150 #pragma warning( disable:4355 ) // 'this' : used in base member initializer list
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	151 #endif // _MSC_VER
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	152
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	153 _short_lived_surv_rate_group(new SurvRateGroup(this, "Short Lived",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	154 G1YoungSurvRateNumRegionsSummary)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	155 _survivor_surv_rate_group(new SurvRateGroup(this, "Survivor",
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	156 G1YoungSurvRateNumRegionsSummary)),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	157 // add here any more surv rate groups
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	158 _recorded_survivor_regions(0),
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	159 _recorded_survivor_head(NULL),
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	160 _recorded_survivor_tail(NULL),
1356 56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	161 _survivors_age_table(true),
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	162
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	163 _gc_overhead_perc(0.0) {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	164
942 2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 936 diff changeset	165 // 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	166 // 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	167 // so it's done as soon as possible.
2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 936 diff changeset	168 HeapRegion::setup_heap_region_size(Arguments::min_heap_size());
1261 0414c1049f15 6923991: G1: improve scalability of RSet scanning iveresov parents: 1111 diff changeset	169 HeapRegionRemSet::setup_remset_size();
942 2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 936 diff changeset	170
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	171 G1ErgoVerbose::initialize();
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	172 if (PrintAdaptiveSizePolicy) {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	173 // 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	174 G1ErgoVerbose::set_enabled(true);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	175 // 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	176 // 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	177 // changed in the future.
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	178 G1ErgoVerbose::set_level(ErgoHigh);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	179 } else {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	180 G1ErgoVerbose::set_enabled(false);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	181 }
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	182
1391 79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	183 // Verify PLAB sizes
3986 65a8ff39a6da 7095194: G1: HeapRegion::GrainBytes, GrainWords, and CardsPerRegion should be size_t johnc parents: 3982 diff changeset	184 const size_t region_size = HeapRegion::GrainWords;
1391 79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	185 if (YoungPLABSize > region_size \|\| OldPLABSize > region_size) {
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	186 char buffer[128];
3986 65a8ff39a6da 7095194: G1: HeapRegion::GrainBytes, GrainWords, and CardsPerRegion should be size_t johnc parents: 3982 diff changeset	187 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	188 OldPLABSize > region_size ? "Old" : "Young", region_size);
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	189 vm_exit_during_initialization(buffer);
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	190 }
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	191
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	192 _recent_prev_end_times_for_all_gcs_sec->add(os::elapsedTime());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	193 _prev_collection_pause_end_ms = os::elapsedTime() * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	194
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	195 _phase_times = new G1GCPhaseTimes(_parallel_gc_threads);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	196
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	197 int index = MIN2(_parallel_gc_threads - 1, 7);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	198
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	199 _rs_length_diff_seq->add(rs_length_diff_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	200 _cost_per_card_ms_seq->add(cost_per_card_ms_defaults[index]);
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	201 _young_cards_per_entry_ratio_seq->add(
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	202 young_cards_per_entry_ratio_defaults[index]);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	203 _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	204 _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	205 _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	206 _young_other_cost_per_region_ms_seq->add(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	207 young_other_cost_per_region_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	208 _non_young_other_cost_per_region_ms_seq->add(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	209 non_young_other_cost_per_region_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	210
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	211 // 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	212 // 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	213 // 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	214 // 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	215 // 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	216 // 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	217 // 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	218 // 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	219 // 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	220
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	221 // 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	222 // 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	223 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	224 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	225 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	226 "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	227 }
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	228 }
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	229 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	230 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	231 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	232 "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	233 }
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	234 }
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	235
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	236 // 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	237 // 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	238 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	239 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	240 // 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	241 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	242 } 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	243 // 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	244 // 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	245 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	246 "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	247 }
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	248 }
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	249
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	250 // 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	251 // 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	252 // 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	253 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	254 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	255 }
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	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	257 // 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	258 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	259 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	260 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	261 "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	262 "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	263 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	264 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	265 }
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	266
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	267 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	268 double time_slice = (double) GCPauseIntervalMillis / 1000.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	269 _mmu_tracker = new G1MMUTrackerQueue(time_slice, max_gc_time);
8094 f1fb03a251e9 8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED poonam parents: 7449 diff changeset	270
f1fb03a251e9 8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED poonam parents: 7449 diff changeset	271 uintx confidence_perc = G1ConfidencePercent;
f1fb03a251e9 8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED poonam parents: 7449 diff changeset	272 // Put an artificial ceiling on this so that it's not set to a silly value.
f1fb03a251e9 8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED poonam parents: 7449 diff changeset	273 if (confidence_perc > 100) {
f1fb03a251e9 8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED poonam parents: 7449 diff changeset	274 confidence_perc = 100;
f1fb03a251e9 8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED poonam parents: 7449 diff changeset	275 warning("G1ConfidencePercent is set to a value that is too large, "
f1fb03a251e9 8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED poonam parents: 7449 diff changeset	276 "it's been updated to %u", confidence_perc);
f1fb03a251e9 8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED poonam parents: 7449 diff changeset	277 }
f1fb03a251e9 8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED poonam parents: 7449 diff changeset	278 _sigma = (double) confidence_perc / 100.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	279
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	280 // start conservatively (around 50ms is about right)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	281 _concurrent_mark_remark_times_ms->add(0.05);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	282 _concurrent_mark_cleanup_times_ms->add(0.20);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	283 _tenuring_threshold = MaxTenuringThreshold;
3868 ae73da50be4b 7081064: G1: remove develop params G1FixedSurvivorSpaceSize, G1FixedTenuringThreshold, and G1FixedEdenSize tonyp parents: 3867 diff changeset	284 // _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	285 // update_young_list_target_length() during initialization.
3868 ae73da50be4b 7081064: G1: remove develop params G1FixedSurvivorSpaceSize, G1FixedTenuringThreshold, and G1FixedEdenSize tonyp parents: 3867 diff changeset	286 _max_survivor_regions = 0;
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	287
1356 56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	288 assert(GCTimeRatio > 0,
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	289 "we should have set it to a default value set_g1_gc_flags() "
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	290 "if a user set it to 0");
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	291 _gc_overhead_perc = 100.0 * (1.0 / (1.0 + GCTimeRatio));
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	292
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	293 uintx reserve_perc = G1ReservePercent;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	294 // 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	295 if (reserve_perc > 50) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	296 reserve_perc = 50;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	297 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	298 "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	299 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	300 _reserve_factor = (double) reserve_perc / 100.0;
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	301 // 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	302 // 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	303 _reserve_regions = 0;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	304
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	305 initialize_all();
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	306 _collectionSetChooser = new CollectionSetChooser();
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	307 _young_gen_sizer = new G1YoungGenSizer(); // Must be after call to initialize_flags
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	308 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	309
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	310 void G1CollectorPolicy::initialize_flags() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	311 set_min_alignment(HeapRegion::GrainBytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	312 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	313 if (SurvivorRatio < 1) {
1e458753107d 6802413: G1: G1FixedSurvivorSpaceSize should be converted into regions in calculate_survivors_policy() apetrusenko parents: 545 diff changeset	314 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	315 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	316 CollectorPolicy::initialize_flags();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	317 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	318
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	319 G1YoungGenSizer::G1YoungGenSizer() : _sizer_kind(SizerDefaults), _adaptive_size(true) {
7449 37f7535e5f18 8001424: G1: Rename certain G1-specific flags johnc parents: 6628 diff changeset	320 assert(G1NewSizePercent <= G1MaxNewSizePercent, "Min larger than max");
37f7535e5f18 8001424: G1: Rename certain G1-specific flags johnc parents: 6628 diff changeset	321 assert(G1NewSizePercent > 0 && G1NewSizePercent < 100, "Min out of bounds");
37f7535e5f18 8001424: G1: Rename certain G1-specific flags johnc parents: 6628 diff changeset	322 assert(G1MaxNewSizePercent > 0 && G1MaxNewSizePercent < 100, "Max out of bounds");
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	323
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	324 if (FLAG_IS_CMDLINE(NewRatio)) {
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	325 if (FLAG_IS_CMDLINE(NewSize) \|\| FLAG_IS_CMDLINE(MaxNewSize)) {
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	326 warning("-XX:NewSize and -XX:MaxNewSize override -XX:NewRatio");
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	327 } else {
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	328 _sizer_kind = SizerNewRatio;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	329 _adaptive_size = false;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	330 return;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	331 }
3976 d912b598c6c3 7091032: G1: assert failure when NewRatio is used tonyp parents: 3927 diff changeset	332 }
1285 a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	333
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	334 if (FLAG_IS_CMDLINE(NewSize)) {
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	335 _min_desired_young_length = MAX2((uint) (NewSize / HeapRegion::GrainBytes),
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	336 1U);
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	337 if (FLAG_IS_CMDLINE(MaxNewSize)) {
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	338 _max_desired_young_length =
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	339 MAX2((uint) (MaxNewSize / HeapRegion::GrainBytes),
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	340 1U);
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	341 _sizer_kind = SizerMaxAndNewSize;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	342 _adaptive_size = _min_desired_young_length == _max_desired_young_length;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	343 } else {
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	344 _sizer_kind = SizerNewSizeOnly;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	345 }
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	346 } else if (FLAG_IS_CMDLINE(MaxNewSize)) {
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	347 _max_desired_young_length =
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	348 MAX2((uint) (MaxNewSize / HeapRegion::GrainBytes),
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	349 1U);
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	350 _sizer_kind = SizerMaxNewSizeOnly;
1285 a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	351 }
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	352 }
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	353
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	354 uint G1YoungGenSizer::calculate_default_min_length(uint new_number_of_heap_regions) {
7449 37f7535e5f18 8001424: G1: Rename certain G1-specific flags johnc parents: 6628 diff changeset	355 uint default_value = (new_number_of_heap_regions * G1NewSizePercent) / 100;
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	356 return MAX2(1U, default_value);
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	357 }
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	358
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	359 uint G1YoungGenSizer::calculate_default_max_length(uint new_number_of_heap_regions) {
7449 37f7535e5f18 8001424: G1: Rename certain G1-specific flags johnc parents: 6628 diff changeset	360 uint default_value = (new_number_of_heap_regions * G1MaxNewSizePercent) / 100;
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	361 return MAX2(1U, default_value);
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	362 }
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	363
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	364 void G1YoungGenSizer::heap_size_changed(uint new_number_of_heap_regions) {
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	365 assert(new_number_of_heap_regions > 0, "Heap must be initialized");
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	366
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	367 switch (_sizer_kind) {
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	368 case SizerDefaults:
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	369 _min_desired_young_length = calculate_default_min_length(new_number_of_heap_regions);
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	370 _max_desired_young_length = calculate_default_max_length(new_number_of_heap_regions);
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	371 break;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	372 case SizerNewSizeOnly:
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	373 _max_desired_young_length = calculate_default_max_length(new_number_of_heap_regions);
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	374 _max_desired_young_length = MAX2(_min_desired_young_length, _max_desired_young_length);
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	375 break;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	376 case SizerMaxNewSizeOnly:
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	377 _min_desired_young_length = calculate_default_min_length(new_number_of_heap_regions);
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	378 _min_desired_young_length = MIN2(_min_desired_young_length, _max_desired_young_length);
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	379 break;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	380 case SizerMaxAndNewSize:
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	381 // Do nothing. Values set on the command line, don't update them at runtime.
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	382 break;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	383 case SizerNewRatio:
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	384 _min_desired_young_length = new_number_of_heap_regions / (NewRatio + 1);
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	385 _max_desired_young_length = _min_desired_young_length;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	386 break;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	387 default:
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	388 ShouldNotReachHere();
1285 a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	389 }
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	390
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	391 assert(_min_desired_young_length <= _max_desired_young_length, "Invalid min/max young gen size values");
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	392 }
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	393
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	394 void G1CollectorPolicy::init() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	395 // Set aside an initial future to_space.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	396 _g1 = G1CollectedHeap::heap();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	397
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	398 assert(Heap_lock->owned_by_self(), "Locking discipline.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	399
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	400 initialize_gc_policy_counters();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	401
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	402 if (adaptive_young_list_length()) {
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	403 _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	404 } else {
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	405 _young_list_fixed_length = _young_gen_sizer->min_desired_young_length();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	406 }
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	407 _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	408 update_young_list_target_length();
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	409
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	410 // 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	411 // 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	412 start_incremental_cset_building();
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
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	415 // 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	416 void G1CollectorPolicy::initialize_gc_policy_counters() {
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	417 _gc_policy_counters = new GCPolicyCounters("GarbageFirst", 1, 3);
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	418 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	419
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	420 bool G1CollectorPolicy::predict_will_fit(uint young_length,
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	421 double base_time_ms,
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	422 uint base_free_regions,
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	423 double target_pause_time_ms) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	424 if (young_length >= base_free_regions) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	425 // end condition 1: not enough space for the young regions
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	426 return false;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	427 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	428
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	429 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	430 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	431 (size_t) (accum_surv_rate * (double) HeapRegion::GrainBytes);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	432 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	433 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	434 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	435 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	436 // end condition 2: prediction is over the target pause time
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	437 return false;
3919 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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	440 size_t free_bytes =
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	441 (base_free_regions - young_length) * HeapRegion::GrainBytes;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	442 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	443 // end condition 3: out-of-space (conservatively!)
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	444 return false;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	445 }
342 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 // success!
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	448 return true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	449 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	450
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	451 void G1CollectorPolicy::record_new_heap_size(uint new_number_of_regions) {
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	452 // re-calculate the necessary reserve
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	453 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	454 // 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	455 // smaller than 1.0) we'll get 1.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	456 _reserve_regions = (uint) ceil(reserve_regions_d);
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	457
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	458 _young_gen_sizer->heap_size_changed(new_number_of_regions);
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	459 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	460
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	461 uint G1CollectorPolicy::calculate_young_list_desired_min_length(
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	462 uint base_min_length) {
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	463 uint desired_min_length = 0;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	464 if (adaptive_young_list_length()) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	465 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	466 double now_sec = os::elapsedTime();
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	467 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	468 double alloc_rate_ms = predict_alloc_rate_ms();
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	469 desired_min_length = (uint) ceil(alloc_rate_ms * when_ms);
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	470 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	471 // 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	472 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	473 }
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	474 desired_min_length += base_min_length;
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	475 // make sure we don't go below any user-defined minimum bound
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	476 return MAX2(_young_gen_sizer->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	477 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	478
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	479 uint G1CollectorPolicy::calculate_young_list_desired_max_length() {
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	480 // 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	481 // 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	482 // effectively don't set this bound.
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	483 return _young_gen_sizer->max_desired_young_length();
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	484 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	485
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	486 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	487 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	488 // 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	489 // otherwise, use the given value.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	490 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	491 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	492
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	493 // 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	494
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	495 // This is how many young regions we already have (currently: the survivors).
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	496 uint base_min_length = recorded_survivor_regions();
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	497 // 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	498 // can allocate one eden region in the worst-case.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	499 uint absolute_min_length = base_min_length + 1;
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	500 uint desired_min_length =
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	501 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	502 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	503 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	504 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	505
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	506 // 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	507
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	508 // We will try our best not to "eat" into the reserve.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	509 uint absolute_max_length = 0;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	510 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	511 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	512 }
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	513 uint desired_max_length = calculate_young_list_desired_max_length();
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	514 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	515 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	516 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	517
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	518 uint young_list_target_length = 0;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	519 if (adaptive_young_list_length()) {
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	520 if (gcs_are_young()) {
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	521 young_list_target_length =
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	522 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	523 base_min_length,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	524 desired_min_length,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	525 desired_max_length);
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	526 _rs_lengths_prediction = rs_lengths;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	527 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	528 // 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	529 // 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	530 // 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	531 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	532 } else {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	533 // The user asked for a fixed young gen so we'll fix the young gen
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	534 // whether the next GC is young or mixed.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	535 young_list_target_length = _young_list_fixed_length;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	536 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	537
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	538 // 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	539 // 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	540 // 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	541 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	542 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	543 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	544 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	545 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	546 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	547
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	548 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	549 "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	550 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	551 _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	552
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	553 update_max_gc_locker_expansion();
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	554 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	555
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	556 uint
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	557 G1CollectorPolicy::calculate_young_list_target_length(size_t rs_lengths,
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	558 uint base_min_length,
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	559 uint desired_min_length,
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	560 uint desired_max_length) {
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	561 assert(adaptive_young_list_length(), "pre-condition");
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	562 assert(gcs_are_young(), "only call this for young GCs");
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	563
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	564 // 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	565 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	566 return desired_min_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	567 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	568
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	569 // 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	570 // 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	571 // 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	572 // 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	573 // survivor_regions_evac_time prediction.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	574 assert(desired_min_length > base_min_length, "invariant");
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	575 uint min_young_length = desired_min_length - base_min_length;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	576 assert(desired_max_length > base_min_length, "invariant");
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	577 uint max_young_length = desired_max_length - base_min_length;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	578
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	579 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	580 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	581 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	582 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	583 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	584 double base_time_ms =
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	585 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	586 survivor_regions_evac_time;
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	587 uint available_free_regions = _free_regions_at_end_of_collection;
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	588 uint base_free_regions = 0;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	589 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	590 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	591 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	592
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	593 // 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	594 // 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	595
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	596 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	597 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	598 // 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	599 // 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	600 // 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	601 // 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	602 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	603 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	604 // 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	605 // 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	606 // 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	607 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	608 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	609 // 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	610 // 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	611 // length. The loop invariants are:
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	612 //
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	613 // 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	614 // 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	615 // 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	616 //
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	617 // 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	618 // 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	619 // 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	620 // 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	621 // 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	622 // 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	623
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	624 assert(min_young_length < max_young_length, "invariant");
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	625 uint diff = (max_young_length - min_young_length) / 2;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	626 while (diff > 0) {
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	627 uint young_length = min_young_length + diff;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	628 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	629 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	630 min_young_length = young_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	631 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	632 max_young_length = young_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	633 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	634 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	635 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	636 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	637 // 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	638 // 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	639
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	640 // 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	641 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	642 "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	643 "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	644 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	645 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	646 "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	647 "fit into the pause target");
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	648 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	649 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	650 "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	651 "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	652 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	653 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	654 // 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	655 // 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	656 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	657 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	658 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	659
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	660 double G1CollectorPolicy::predict_survivor_regions_evac_time() {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	661 double survivor_regions_evac_time = 0.0;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	662 for (HeapRegion * r = _recorded_survivor_head;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	663 r != NULL && r != _recorded_survivor_tail->get_next_young_region();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	664 r = r->get_next_young_region()) {
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	665 survivor_regions_evac_time += predict_region_elapsed_time_ms(r, gcs_are_young());
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	666 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	667 return survivor_regions_evac_time;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	668 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	669
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	670 void G1CollectorPolicy::revise_young_list_target_length_if_necessary() {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	671 guarantee( adaptive_young_list_length(), "should not call this otherwise" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	672
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	673 size_t rs_lengths = _g1->young_list()->sampled_rs_lengths();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	674 if (rs_lengths > _rs_lengths_prediction) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	675 // add 10% to avoid having to recalculate often
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	676 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	677 update_young_list_target_length(rs_lengths_prediction);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	678 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	679 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	680
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	681
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	682
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	683 HeapWord* G1CollectorPolicy::mem_allocate_work(size_t size,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	684 bool is_tlab,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	685 bool* gc_overhead_limit_was_exceeded) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	686 guarantee(false, "Not using this policy feature yet.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	687 return NULL;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	688 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	689
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	690 // This method controls how a collector handles one or more
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	691 // of its generations being fully allocated.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	692 HeapWord* G1CollectorPolicy::satisfy_failed_allocation(size_t size,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	693 bool is_tlab) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	694 guarantee(false, "Not using this policy feature yet.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	695 return NULL;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	696 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	697
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	698
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	699 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	700 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	701 HeapRegion* head = _g1->young_list()->first_region();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	702 return
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	703 verify_young_ages(head, _short_lived_surv_rate_group);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	704 // also call verify_young_ages on any additional surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	705 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	706
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	707 bool
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	708 G1CollectorPolicy::verify_young_ages(HeapRegion* head,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	709 SurvRateGroup *surv_rate_group) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	710 guarantee( surv_rate_group != NULL, "pre-condition" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	711
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	712 const char* name = surv_rate_group->name();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	713 bool ret = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	714 int prev_age = -1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	715
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	716 for (HeapRegion* curr = head;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	717 curr != NULL;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	718 curr = curr->get_next_young_region()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	719 SurvRateGroup* group = curr->surv_rate_group();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	720 if (group == NULL && !curr->is_survivor()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	721 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	722 ret = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	723 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	724
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	725 if (surv_rate_group == group) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	726 int age = curr->age_in_surv_rate_group();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	727
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	728 if (age < 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	729 gclog_or_tty->print_cr("## %s: encountered negative age", name);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	730 ret = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	731 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	732
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	733 if (age <= prev_age) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	734 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	735 "(%d, %d)", name, age, prev_age);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	736 ret = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	737 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	738 prev_age = age;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	739 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	740 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	741
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	742 return ret;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	743 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	744 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	745
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	746 void G1CollectorPolicy::record_full_collection_start() {
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	747 _full_collection_start_sec = os::elapsedTime();
10098 71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	748 record_heap_size_info_at_start();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	749 // 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	750 _g1->set_full_collection();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	751 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	752
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	753 void G1CollectorPolicy::record_full_collection_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	754 // Consider this like a collection pause for the purposes of allocation
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	755 // since last pause.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	756 double end_sec = os::elapsedTime();
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	757 double full_gc_time_sec = end_sec - _full_collection_start_sec;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	758 double full_gc_time_ms = full_gc_time_sec * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	759
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	760 _trace_gen1_time_data.record_full_collection(full_gc_time_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	761
595 3698e8f47799 6804746: G1: guarantee(variance() > -1.0,"variance should be >= 0") (due to evacuation failure) tonyp parents: 547 diff changeset	762 update_recent_gc_times(end_sec, full_gc_time_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	763
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	764 _g1->clear_full_collection();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	765
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	766 // "Nuke" the heuristics that control the young/mixed GC
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	767 // transitions and make sure we start with young GCs after the Full GC.
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	768 set_gcs_are_young(true);
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	769 _last_young_gc = false;
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	770 clear_initiate_conc_mark_if_possible();
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	771 clear_during_initial_mark_pause();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	772 _in_marking_window = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	773 _in_marking_window_im = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	774
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	775 _short_lived_surv_rate_group->start_adding_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	776 // also call this on any additional surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	777
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	778 record_survivor_regions(0, NULL, NULL);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	779
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	780 _free_regions_at_end_of_collection = _g1->free_regions();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	781 // Reset survivors SurvRateGroup.
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	782 _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	783 update_young_list_target_length();
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	784 _collectionSetChooser->clear();
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	785 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	786
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	787 void G1CollectorPolicy::record_stop_world_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	788 _stop_world_start = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	789 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	790
10098 71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	791 void G1CollectorPolicy::record_collection_pause_start(double start_time_sec) {
4837 eff609af17d7 7127706: G1: re-enable survivors during the initial-mark pause tonyp parents: 4834 diff changeset	792 // We only need to do this here as the policy will only be applied
eff609af17d7 7127706: G1: re-enable survivors during the initial-mark pause tonyp parents: 4834 diff changeset	793 // to the GC we're about to start. so, no point is calculating this
eff609af17d7 7127706: G1: re-enable survivors during the initial-mark pause tonyp parents: 4834 diff changeset	794 // every time we calculate / recalculate the target young length.
eff609af17d7 7127706: G1: re-enable survivors during the initial-mark pause tonyp parents: 4834 diff changeset	795 update_survivors_policy();
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	796
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	797 assert(_g1->used() == _g1->recalculate_used(),
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	798 err_msg("sanity, used: "SIZE_FORMAT" recalculate_used: "SIZE_FORMAT,
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	799 _g1->used(), _g1->recalculate_used()));
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	800
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	801 double s_w_t_ms = (start_time_sec - _stop_world_start) * 1000.0;
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	802 _trace_gen0_time_data.record_start_collection(s_w_t_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	803 _stop_world_start = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	804
10098 71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	805 record_heap_size_info_at_start();
71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	806
6628 bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	807 phase_times()->record_cur_collection_start_sec(start_time_sec);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	808 _pending_cards = _g1->pending_card_num();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	809
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	810 _collection_set_bytes_used_before = 0;
3830 f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	811 _bytes_copied_during_gc = 0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	812
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	813 _last_gc_was_young = false;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	814
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	815 // do that for any other surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	816 _short_lived_surv_rate_group->stop_adding_regions();
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	817 _survivors_age_table.clear();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	818
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	819 assert( verify_young_ages(), "region age verification" );
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
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	822 void G1CollectorPolicy::record_concurrent_mark_init_end(double
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	823 mark_init_elapsed_time_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	824 _during_marking = true;
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	825 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	826 clear_during_initial_mark_pause();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	827 _cur_mark_stop_world_time_ms = mark_init_elapsed_time_ms;
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 void G1CollectorPolicy::record_concurrent_mark_remark_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	831 _mark_remark_start_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	832 _during_marking = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	833 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	834
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	835 void G1CollectorPolicy::record_concurrent_mark_remark_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	836 double end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	837 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	838 _concurrent_mark_remark_times_ms->add(elapsed_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	839 _cur_mark_stop_world_time_ms += elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	840 _prev_collection_pause_end_ms += elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	841
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	842 _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	843 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	844
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	845 void G1CollectorPolicy::record_concurrent_mark_cleanup_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	846 _mark_cleanup_start_sec = os::elapsedTime();
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
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	849 void G1CollectorPolicy::record_concurrent_mark_cleanup_completed() {
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	850 _last_young_gc = true;
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	851 _in_marking_window = false;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	852 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	853
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	854 void G1CollectorPolicy::record_concurrent_pause() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	855 if (_stop_world_start > 0.0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	856 double yield_ms = (os::elapsedTime() - _stop_world_start) * 1000.0;
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	857 _trace_gen0_time_data.record_yield_time(yield_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	858 }
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
4834 6a78aa6ac1ff 7132311: G1: assert((s == klass->oop_size(this)) \|\| (Universe::heap()->is_gc_active() && ((is_typeArray()... brutisso parents: 4829 diff changeset	861 bool G1CollectorPolicy::need_to_start_conc_mark(const char* source, size_t alloc_word_size) {
6a78aa6ac1ff 7132311: G1: assert((s == klass->oop_size(this)) \|\| (Universe::heap()->is_gc_active() && ((is_typeArray()... brutisso parents: 4829 diff changeset	862 if (_g1->concurrent_mark()->cmThread()->during_cycle()) {
4829 9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	863 return false;
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	864 }
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	865
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	866 size_t marking_initiating_used_threshold =
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	867 (_g1->capacity() / 100) * InitiatingHeapOccupancyPercent;
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	868 size_t cur_used_bytes = _g1->non_young_capacity_bytes();
4834 6a78aa6ac1ff 7132311: G1: assert((s == klass->oop_size(this)) \|\| (Universe::heap()->is_gc_active() && ((is_typeArray()... brutisso parents: 4829 diff changeset	869 size_t alloc_byte_size = alloc_word_size * HeapWordSize;
6a78aa6ac1ff 7132311: G1: assert((s == klass->oop_size(this)) \|\| (Universe::heap()->is_gc_active() && ((is_typeArray()... brutisso parents: 4829 diff changeset	870
6a78aa6ac1ff 7132311: G1: assert((s == klass->oop_size(this)) \|\| (Universe::heap()->is_gc_active() && ((is_typeArray()... brutisso parents: 4829 diff changeset	871 if ((cur_used_bytes + alloc_byte_size) > marking_initiating_used_threshold) {
4829 9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	872 if (gcs_are_young()) {
4834 6a78aa6ac1ff 7132311: G1: assert((s == klass->oop_size(this)) \|\| (Universe::heap()->is_gc_active() && ((is_typeArray()... brutisso parents: 4829 diff changeset	873 ergo_verbose5(ErgoConcCycles,
4829 9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	874 "request concurrent cycle initiation",
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	875 ergo_format_reason("occupancy higher than threshold")
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	876 ergo_format_byte("occupancy")
4834 6a78aa6ac1ff 7132311: G1: assert((s == klass->oop_size(this)) \|\| (Universe::heap()->is_gc_active() && ((is_typeArray()... brutisso parents: 4829 diff changeset	877 ergo_format_byte("allocation request")
4829 9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	878 ergo_format_byte_perc("threshold")
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	879 ergo_format_str("source"),
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	880 cur_used_bytes,
4834 6a78aa6ac1ff 7132311: G1: assert((s == klass->oop_size(this)) \|\| (Universe::heap()->is_gc_active() && ((is_typeArray()... brutisso parents: 4829 diff changeset	881 alloc_byte_size,
4829 9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	882 marking_initiating_used_threshold,
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	883 (double) InitiatingHeapOccupancyPercent,
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	884 source);
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	885 return true;
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	886 } else {
4834 6a78aa6ac1ff 7132311: G1: assert((s == klass->oop_size(this)) \|\| (Universe::heap()->is_gc_active() && ((is_typeArray()... brutisso parents: 4829 diff changeset	887 ergo_verbose5(ErgoConcCycles,
4829 9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	888 "do not request concurrent cycle initiation",
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	889 ergo_format_reason("still doing mixed collections")
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	890 ergo_format_byte("occupancy")
4834 6a78aa6ac1ff 7132311: G1: assert((s == klass->oop_size(this)) \|\| (Universe::heap()->is_gc_active() && ((is_typeArray()... brutisso parents: 4829 diff changeset	891 ergo_format_byte("allocation request")
4829 9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	892 ergo_format_byte_perc("threshold")
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	893 ergo_format_str("source"),
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	894 cur_used_bytes,
4834 6a78aa6ac1ff 7132311: G1: assert((s == klass->oop_size(this)) \|\| (Universe::heap()->is_gc_active() && ((is_typeArray()... brutisso parents: 4829 diff changeset	895 alloc_byte_size,
4829 9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	896 marking_initiating_used_threshold,
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	897 (double) InitiatingHeapOccupancyPercent,
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	898 source);
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	899 }
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	900 }
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	901
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	902 return false;
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	903 }
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	904
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	905 // Anything below that is considered to be zero
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	906 #define MIN_TIMER_GRANULARITY 0.0000001
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	907
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	908 void G1CollectorPolicy::record_collection_pause_end(double pause_time_ms) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	909 double end_time_sec = os::elapsedTime();
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	910 assert(_cur_collection_pause_used_regions_at_start >= cset_region_length(),
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	911 "otherwise, the subtraction below does not make sense");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	912 size_t rs_size =
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	913 _cur_collection_pause_used_regions_at_start - cset_region_length();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	914 size_t cur_used_bytes = _g1->used();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	915 assert(cur_used_bytes == _g1->recalculate_used(), "It should!");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	916 bool last_pause_included_initial_mark = false;
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	917 bool update_stats = !_g1->evacuation_failed();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	918
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	919 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	920 if (G1YoungSurvRateVerbose) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	921 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	922 _short_lived_surv_rate_group->print();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	923 // do that for any other surv rate groups too
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 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	926
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	927 last_pause_included_initial_mark = during_initial_mark_pause();
4829 9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	928 if (last_pause_included_initial_mark) {
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	929 record_concurrent_mark_init_end(0.0);
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	930 } else if (!_last_young_gc && need_to_start_conc_mark("end of GC")) {
4829 9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	931 // Note: this might have already been set, if during the last
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	932 // pause we decided to start a cycle but at the beginning of
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	933 // this pause we decided to postpone it. That's OK.
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	934 set_initiate_conc_mark_if_possible();
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	935 }
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	936
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	937 _mmu_tracker->add_pause(end_time_sec - pause_time_ms/1000.0,
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	938 end_time_sec, false);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	939
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	940 size_t freed_bytes =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	941 _cur_collection_pause_used_at_start_bytes - cur_used_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	942 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	943
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	944 double survival_fraction =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	945 (double)surviving_bytes/
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	946 (double)_collection_set_bytes_used_before;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	947
595 3698e8f47799 6804746: G1: guarantee(variance() > -1.0,"variance should be >= 0") (due to evacuation failure) tonyp parents: 547 diff changeset	948 if (update_stats) {
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	949 _trace_gen0_time_data.record_end_collection(pause_time_ms, phase_times());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	950 // this is where we update the allocation rate of the application
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	951 double app_time_ms =
6628 bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	952 (phase_times()->cur_collection_start_sec() * 1000.0 - _prev_collection_pause_end_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	953 if (app_time_ms < MIN_TIMER_GRANULARITY) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	954 // This usually happens due to the timer not having the required
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	955 // granularity. Some Linuxes are the usual culprits.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	956 // We'll just set it to something (arbitrarily) small.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	957 app_time_ms = 1.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	958 }
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	959 // We maintain the invariant that all objects allocated by mutator
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	960 // threads will be allocated out of eden regions. So, we can use
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	961 // the eden region number allocated since the previous GC to
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	962 // calculate the application's allocate rate. The only exception
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	963 // to that is humongous objects that are allocated separately. But
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	964 // given that humongous object allocations do not really affect
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	965 // either the pause's duration nor when the next pause will take
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	966 // place we can safely ignore them here.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	967 uint regions_allocated = eden_cset_region_length();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	968 double alloc_rate_ms = (double) regions_allocated / app_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	969 _alloc_rate_ms_seq->add(alloc_rate_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	970
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	971 double interval_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	972 (end_time_sec - _recent_prev_end_times_for_all_gcs_sec->oldest()) * 1000.0;
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	973 update_recent_gc_times(end_time_sec, pause_time_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	974 _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	975 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	976 (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	977 #ifndef PRODUCT
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	978 // 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	979 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	980 gclog_or_tty->print_cr("-------------------------------------------");
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	981 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	982 _recent_gc_times_ms->dump();
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	983 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	984 _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	985 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	986 _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	987 // 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	988 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	989 #endif // !PRODUCT
23b9a8d315fc 6902701: G1: protect debugging code related to 6898948 with a debug flag ysr parents: 1086 diff changeset	990 // 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	991 // 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	992 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	993 _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	994 } else {
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	995 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	996 _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	997 }
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	998 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	999 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1000 bool new_in_marking_window = _in_marking_window;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1001 bool new_in_marking_window_im = false;
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1002 if (during_initial_mark_pause()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1003 new_in_marking_window = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1004 new_in_marking_window_im = true;
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
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1007 if (_last_young_gc) {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1008 // This is supposed to to be the "last young GC" before we start
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1009 // doing mixed GCs. Here we decide whether to start mixed GCs or not.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1010
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	1011 if (!last_pause_included_initial_mark) {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1012 if (next_gc_should_be_mixed("start mixed GCs",
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1013 "do not start mixed GCs")) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1014 set_gcs_are_young(false);
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1015 }
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	1016 } else {
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1017 ergo_verbose0(ErgoMixedGCs,
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1018 "do not start mixed GCs",
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	1019 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	1020 }
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1021 _last_young_gc = false;
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1022 }
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1023
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1024 if (!_last_gc_was_young) {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1025 // This is a mixed GC. Here we decide whether to continue doing
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1026 // mixed GCs or not.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1027
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1028 if (!next_gc_should_be_mixed("continue mixed GCs",
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1029 "do not continue mixed GCs")) {
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1030 set_gcs_are_young(true);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1031 }
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1032 }
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1033
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1034 _short_lived_surv_rate_group->start_adding_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1035 // do that for any other surv rate groupsx
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1036
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	1037 if (update_stats) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1038 double cost_per_card_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1039 if (_pending_cards > 0) {
6628 bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	1040 cost_per_card_ms = phase_times()->average_last_update_rs_time() / (double) _pending_cards;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1041 _cost_per_card_ms_seq->add(cost_per_card_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1042 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1043
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1044 size_t cards_scanned = _g1->cards_scanned();
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 double cost_per_entry_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1047 if (cards_scanned > 10) {
6628 bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	1048 cost_per_entry_ms = phase_times()->average_last_scan_rs_time() / (double) cards_scanned;
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1049 if (_last_gc_was_young) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1050 _cost_per_entry_ms_seq->add(cost_per_entry_ms);
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1051 } else {
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1052 _mixed_cost_per_entry_ms_seq->add(cost_per_entry_ms);
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1053 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1054 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1055
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1056 if (_max_rs_lengths > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1057 double cards_per_entry_ratio =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1058 (double) cards_scanned / (double) _max_rs_lengths;
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1059 if (_last_gc_was_young) {
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1060 _young_cards_per_entry_ratio_seq->add(cards_per_entry_ratio);
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1061 } else {
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1062 _mixed_cards_per_entry_ratio_seq->add(cards_per_entry_ratio);
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1063 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1064 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1065
4727 67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1066 // This is defensive. For a while _max_rs_lengths could get
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1067 // smaller than _recorded_rs_lengths which was causing
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1068 // rs_length_diff to get very large and mess up the RSet length
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1069 // predictions. The reason was unsafe concurrent updates to the
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1070 // _inc_cset_recorded_rs_lengths field which the code below guards
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1071 // against (see CR 7118202). This bug has now been fixed (see CR
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1072 // 7119027). However, I'm still worried that
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1073 // _inc_cset_recorded_rs_lengths might still end up somewhat
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1074 // inaccurate. The concurrent refinement thread calculates an
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1075 // RSet's length concurrently with other CR threads updating it
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1076 // which might cause it to calculate the length incorrectly (if,
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1077 // say, it's in mid-coarsening). So I'll leave in the defensive
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1078 // conditional below just in case.
4130 d23d2b18183e 7118202: G1: eden size unnecessarily drops to a minimum tonyp parents: 4097 diff changeset	1079 size_t rs_length_diff = 0;
d23d2b18183e 7118202: G1: eden size unnecessarily drops to a minimum tonyp parents: 4097 diff changeset	1080 if (_max_rs_lengths > _recorded_rs_lengths) {
d23d2b18183e 7118202: G1: eden size unnecessarily drops to a minimum tonyp parents: 4097 diff changeset	1081 rs_length_diff = _max_rs_lengths - _recorded_rs_lengths;
d23d2b18183e 7118202: G1: eden size unnecessarily drops to a minimum tonyp parents: 4097 diff changeset	1082 }
d23d2b18183e 7118202: G1: eden size unnecessarily drops to a minimum tonyp parents: 4097 diff changeset	1083 _rs_length_diff_seq->add((double) rs_length_diff);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1084
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1085 size_t copied_bytes = surviving_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1086 double cost_per_byte_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1087 if (copied_bytes > 0) {
6628 bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	1088 cost_per_byte_ms = phase_times()->average_last_obj_copy_time() / (double) copied_bytes;
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1089 if (_in_marking_window) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1090 _cost_per_byte_ms_during_cm_seq->add(cost_per_byte_ms);
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1091 } else {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1092 _cost_per_byte_ms_seq->add(cost_per_byte_ms);
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1093 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1094 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1095
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1096 double all_other_time_ms = pause_time_ms -
6628 bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	1097 (phase_times()->average_last_update_rs_time() + phase_times()->average_last_scan_rs_time()
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	1098 + phase_times()->average_last_obj_copy_time() + phase_times()->average_last_termination_time());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1099
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1100 double young_other_time_ms = 0.0;
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	1101 if (young_cset_region_length() > 0) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1102 young_other_time_ms =
6628 bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	1103 phase_times()->young_cset_choice_time_ms() +
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	1104 phase_times()->young_free_cset_time_ms();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1105 _young_other_cost_per_region_ms_seq->add(young_other_time_ms /
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	1106 (double) young_cset_region_length());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1107 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1108 double non_young_other_time_ms = 0.0;
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	1109 if (old_cset_region_length() > 0) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1110 non_young_other_time_ms =
6628 bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	1111 phase_times()->non_young_cset_choice_time_ms() +
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	1112 phase_times()->non_young_free_cset_time_ms();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1113
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1114 _non_young_other_cost_per_region_ms_seq->add(non_young_other_time_ms /
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	1115 (double) old_cset_region_length());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1116 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1117
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1118 double constant_other_time_ms = all_other_time_ms -
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1119 (young_other_time_ms + non_young_other_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1120 _constant_other_time_ms_seq->add(constant_other_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1121
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1122 double survival_ratio = 0.0;
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1123 if (_collection_set_bytes_used_before > 0) {
3830 f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	1124 survival_ratio = (double) _bytes_copied_during_gc /
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1125 (double) _collection_set_bytes_used_before;
342 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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1128 _pending_cards_seq->add((double) _pending_cards);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1129 _rs_lengths_seq->add((double) _max_rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1130 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1131
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1132 _in_marking_window = new_in_marking_window;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1133 _in_marking_window_im = new_in_marking_window_im;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1134 _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	1135 update_young_list_target_length();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1136
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1137 // 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	1138 double update_rs_time_goal_ms = _mmu_tracker->max_gc_time() * MILLIUNITS * G1RSetUpdatingPauseTimePercent / 100.0;
6628 bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	1139 adjust_concurrent_refinement(phase_times()->average_last_update_rs_time(),
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	1140 phase_times()->sum_last_update_rs_processed_buffers(), update_rs_time_goal_ms);
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	1141
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1142 _collectionSetChooser->verify();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1143 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1144
6059 3a22b77e755a 7161545: G1: Minor cleanups to the G1 logging brutisso parents: 6030 diff changeset	1145 #define EXT_SIZE_FORMAT "%.1f%s"
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1146 #define EXT_SIZE_PARAMS(bytes) \
6059 3a22b77e755a 7161545: G1: Minor cleanups to the G1 logging brutisso parents: 6030 diff changeset	1147 byte_size_in_proper_unit((double)(bytes)), \
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1148 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	1149
10098 71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1150 void G1CollectorPolicy::record_heap_size_info_at_start() {
71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1151 YoungList* young_list = _g1->young_list();
71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1152 _eden_bytes_before_gc = young_list->eden_used_bytes();
71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1153 _survivor_bytes_before_gc = young_list->survivor_used_bytes();
71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1154 _capacity_before_gc = _g1->capacity();
71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1155
71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1156 _cur_collection_pause_used_at_start_bytes = _g1->used();
71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1157 _cur_collection_pause_used_regions_at_start = _g1->used_regions();
71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1158
71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1159 size_t eden_capacity_before_gc =
71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1160 (_young_list_target_length * HeapRegion::GrainBytes) - _survivor_bytes_before_gc;
71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1161
71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1162 _prev_eden_capacity = eden_capacity_before_gc;
71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1163 }
71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1164
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1165 void G1CollectorPolicy::print_heap_transition() {
6628 bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	1166 _g1->print_size_transition(gclog_or_tty,
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	1167 _cur_collection_pause_used_at_start_bytes, _g1->used(), _g1->capacity());
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	1168 }
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	1169
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	1170 void G1CollectorPolicy::print_detailed_heap_transition() {
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1171 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	1172 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	1173 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	1174 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	1175 size_t used = _g1->used();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1176 size_t capacity = _g1->capacity();
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1177 size_t eden_capacity =
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1178 (_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	1179
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1180 gclog_or_tty->print_cr(
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1181 " [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	1182 "Survivors: "EXT_SIZE_FORMAT"->"EXT_SIZE_FORMAT" "
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1183 "Heap: "EXT_SIZE_FORMAT"("EXT_SIZE_FORMAT")->"
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1184 EXT_SIZE_FORMAT"("EXT_SIZE_FORMAT")]",
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1185 EXT_SIZE_PARAMS(_eden_bytes_before_gc),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1186 EXT_SIZE_PARAMS(_prev_eden_capacity),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1187 EXT_SIZE_PARAMS(eden_bytes),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1188 EXT_SIZE_PARAMS(eden_capacity),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1189 EXT_SIZE_PARAMS(_survivor_bytes_before_gc),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1190 EXT_SIZE_PARAMS(survivor_bytes),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1191 EXT_SIZE_PARAMS(used_before_gc),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1192 EXT_SIZE_PARAMS(_capacity_before_gc),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1193 EXT_SIZE_PARAMS(used),
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	1194 EXT_SIZE_PARAMS(capacity));
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1195 }
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1196
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1197 void G1CollectorPolicy::adjust_concurrent_refinement(double update_rs_time,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1198 double update_rs_processed_buffers,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1199 double goal_ms) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1200 DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1201 ConcurrentG1Refine *cg1r = G1CollectedHeap::heap()->concurrent_g1_refine();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1202
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	1203 if (G1UseAdaptiveConcRefinement) {
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1204 const int k_gy = 3, k_gr = 6;
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1205 const double inc_k = 1.1, dec_k = 0.9;
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1206
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1207 int g = cg1r->green_zone();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1208 if (update_rs_time > goal_ms) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1209 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	1210 } else {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1211 if (update_rs_time < goal_ms && update_rs_processed_buffers > g) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1212 g = (int)MAX2(g * inc_k, g + 1.0);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1213 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1214 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1215 // Change the refinement threads params
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1216 cg1r->set_green_zone(g);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1217 cg1r->set_yellow_zone(g * k_gy);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1218 cg1r->set_red_zone(g * k_gr);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1219 cg1r->reinitialize_threads();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1220
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1221 int processing_threshold_delta = MAX2((int)(cg1r->green_zone() * sigma()), 1);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1222 int processing_threshold = MIN2(cg1r->green_zone() + processing_threshold_delta,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1223 cg1r->yellow_zone());
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1224 // Change the barrier params
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1225 dcqs.set_process_completed_threshold(processing_threshold);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1226 dcqs.set_max_completed_queue(cg1r->red_zone());
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1227 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1228
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1229 int curr_queue_size = dcqs.completed_buffers_num();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1230 if (curr_queue_size >= cg1r->yellow_zone()) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1231 dcqs.set_completed_queue_padding(curr_queue_size);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1232 } else {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1233 dcqs.set_completed_queue_padding(0);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1234 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1235 dcqs.notify_if_necessary();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1236 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1237
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1238 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1239 G1CollectorPolicy::predict_base_elapsed_time_ms(size_t pending_cards,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1240 size_t scanned_cards) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1241 return
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1242 predict_rs_update_time_ms(pending_cards) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1243 predict_rs_scan_time_ms(scanned_cards) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1244 predict_constant_other_time_ms();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1245 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1246
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1247 double
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1248 G1CollectorPolicy::predict_base_elapsed_time_ms(size_t pending_cards) {
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1249 size_t rs_length = predict_rs_length_diff();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1250 size_t card_num;
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1251 if (gcs_are_young()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1252 card_num = predict_young_card_num(rs_length);
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1253 } else {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1254 card_num = predict_non_young_card_num(rs_length);
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1255 }
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1256 return predict_base_elapsed_time_ms(pending_cards, card_num);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1257 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1258
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1259 size_t G1CollectorPolicy::predict_bytes_to_copy(HeapRegion* hr) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1260 size_t bytes_to_copy;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1261 if (hr->is_marked())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1262 bytes_to_copy = hr->max_live_bytes();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1263 else {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1264 assert(hr->is_young() && hr->age_in_surv_rate_group() != -1, "invariant");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1265 int age = hr->age_in_surv_rate_group();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1266 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	1267 bytes_to_copy = (size_t) ((double) hr->used() * yg_surv_rate);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1268 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1269 return bytes_to_copy;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1270 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1271
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1272 double
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1273 G1CollectorPolicy::predict_region_elapsed_time_ms(HeapRegion* hr,
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1274 bool for_young_gc) {
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1275 size_t rs_length = hr->rem_set()->occupied();
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1276 size_t card_num;
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1277
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1278 // Predicting the number of cards is based on which type of GC
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1279 // we're predicting for.
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1280 if (for_young_gc) {
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1281 card_num = predict_young_card_num(rs_length);
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1282 } else {
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1283 card_num = predict_non_young_card_num(rs_length);
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1284 }
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1285 size_t bytes_to_copy = predict_bytes_to_copy(hr);
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1286
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1287 double region_elapsed_time_ms =
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1288 predict_rs_scan_time_ms(card_num) +
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1289 predict_object_copy_time_ms(bytes_to_copy);
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1290
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1291 // The prediction of the "other" time for this region is based
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1292 // upon the region type and NOT the GC type.
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1293 if (hr->is_young()) {
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1294 region_elapsed_time_ms += predict_young_other_time_ms(1);
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1295 } else {
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1296 region_elapsed_time_ms += predict_non_young_other_time_ms(1);
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1297 }
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1298 return region_elapsed_time_ms;
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1299 }
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1300
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1301 void
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1302 G1CollectorPolicy::init_cset_region_lengths(uint eden_cset_region_length,
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1303 uint survivor_cset_region_length) {
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	1304 _eden_cset_region_length = eden_cset_region_length;
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	1305 _survivor_cset_region_length = survivor_cset_region_length;
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	1306 _old_cset_region_length = 0;
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1307 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1308
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1309 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	1310 _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	1311 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1312
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1313 void G1CollectorPolicy::update_recent_gc_times(double end_time_sec,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1314 double elapsed_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1315 _recent_gc_times_ms->add(elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1316 _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	1317 _prev_collection_pause_end_ms = end_time_sec * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1318 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1319
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1320 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	1321 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	1322 double threshold = _gc_overhead_perc;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1323 if (recent_gc_overhead > threshold) {
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1324 // We will double the existing space, or take
20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1325 // G1ExpandByPercentOfAvailable % of the available expansion
20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1326 // space, whichever is smaller, bounded below by a minimum
20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1327 // expansion (unless that's all that's left.)
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1328 const size_t min_expand_bytes = 1*M;
2188 c33825b68624 6923430: G1: assert(res != 0,"This should have worked.") johnc parents: 2152 diff changeset	1329 size_t reserved_bytes = _g1->max_capacity();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1330 size_t committed_bytes = _g1->capacity();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1331 size_t uncommitted_bytes = reserved_bytes - committed_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1332 size_t expand_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1333 size_t expand_bytes_via_pct =
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1334 uncommitted_bytes * G1ExpandByPercentOfAvailable / 100;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1335 expand_bytes = MIN2(expand_bytes_via_pct, committed_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1336 expand_bytes = MAX2(expand_bytes, min_expand_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1337 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	1338
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1339 ergo_verbose5(ErgoHeapSizing,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1340 "attempt heap expansion",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1341 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	1342 "threshold after GC")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1343 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	1344 ergo_format_perc("threshold")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1345 ergo_format_byte("uncommitted")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1346 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	1347 recent_gc_overhead, threshold,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1348 uncommitted_bytes,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1349 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	1350
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1351 return expand_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1352 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1353 return 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1354 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1355 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1356
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1357 void G1CollectorPolicy::print_tracing_info() const {
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	1358 _trace_gen0_time_data.print();
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	1359 _trace_gen1_time_data.print();
342 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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1362 void G1CollectorPolicy::print_yg_surv_rate_info() const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1363 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1364 _short_lived_surv_rate_group->print_surv_rate_summary();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1365 // add this call for any other surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1366 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1367 }
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 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1370 // for debugging, bit of a hack...
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1371 static char*
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1372 region_num_to_mbs(int length) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1373 static char buffer[64];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1374 double bytes = (double) (length * HeapRegion::GrainBytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1375 double mbs = bytes / (double) (1024 * 1024);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1376 sprintf(buffer, "%7.2lfMB", mbs);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1377 return buffer;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1378 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1379 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1380
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1381 uint G1CollectorPolicy::max_regions(int purpose) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1382 switch (purpose) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1383 case GCAllocForSurvived:
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1384 return _max_survivor_regions;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1385 case GCAllocForTenured:
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1386 return REGIONS_UNLIMITED;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1387 default:
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1388 ShouldNotReachHere();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1389 return REGIONS_UNLIMITED;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1390 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1391 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1392
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	1393 void G1CollectorPolicy::update_max_gc_locker_expansion() {
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1394 uint expansion_region_num = 0;
1991 016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	1395 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	1396 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	1397 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	1398 // 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	1399 // less than 1.0) we'll get 1.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1400 expansion_region_num = (uint) ceil(expansion_region_num_d);
1991 016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	1401 } else {
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	1402 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	1403 }
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	1404 _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	1405 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	1406 }
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	1407
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1408 // Calculates survivor space parameters.
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	1409 void G1CollectorPolicy::update_survivors_policy() {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	1410 double max_survivor_regions_d =
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	1411 (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	1412 // 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	1413 // smaller than 1.0) we'll get 1.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1414 _max_survivor_regions = (uint) ceil(max_survivor_regions_d);
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	1415
3868 ae73da50be4b 7081064: G1: remove develop params G1FixedSurvivorSpaceSize, G1FixedTenuringThreshold, and G1FixedEdenSize tonyp parents: 3867 diff changeset	1416 _tenuring_threshold = _survivors_age_table.compute_tenuring_threshold(
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1417 HeapRegion::GrainWords * _max_survivor_regions);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1418 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1419
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1420 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	1421 GCCause::Cause gc_cause) {
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1422 bool during_cycle = _g1->concurrent_mark()->cmThread()->during_cycle();
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1423 if (!during_cycle) {
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1424 ergo_verbose1(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1425 "request concurrent cycle initiation",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1426 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	1427 ergo_format_str("GC cause"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1428 GCCause::to_string(gc_cause));
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1429 set_initiate_conc_mark_if_possible();
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1430 return true;
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1431 } else {
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1432 ergo_verbose1(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1433 "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	1434 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	1435 ergo_format_str("GC cause"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1436 GCCause::to_string(gc_cause));
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1437 return false;
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1438 }
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1439 }
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1440
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1441 void
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1442 G1CollectorPolicy::decide_on_conc_mark_initiation() {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1443 // 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	1444 // initial-mark pause.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1445
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1446 // 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	1447 // 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	1448 // 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	1449 // initial-mark pause).
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1450 assert(!during_initial_mark_pause(), "pre-condition");
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1451
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1452 if (initiate_conc_mark_if_possible()) {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1453 // 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	1454 // 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	1455 // concurrent marking cycle. So we might initiate one.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1456
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1457 bool during_cycle = _g1->concurrent_mark()->cmThread()->during_cycle();
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1458 if (!during_cycle) {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1459 // 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	1460 // 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	1461 // initiate a new cycle.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1462
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1463 set_during_initial_mark_pause();
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1464 // We do not allow mixed GCs during marking.
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1465 if (!gcs_are_young()) {
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1466 set_gcs_are_young(true);
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1467 ergo_verbose0(ErgoMixedGCs,
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1468 "end mixed GCs",
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	1469 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	1470 }
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1471
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1472 // 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	1473 // we've already acted on it.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1474 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	1475
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1476 ergo_verbose0(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1477 "initiate concurrent cycle",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1478 ergo_format_reason("concurrent cycle initiation requested"));
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1479 } else {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1480 // The concurrent marking thread is still finishing up the
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1481 // 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	1482 // overlap. In particular, the concurrent marking thread might
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1483 // 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	1484 // 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	1485 // 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	1486 // 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	1487 // 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	1488 // periodically yields while clearing the next marking bitmap
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1489 // 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	1490 // 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	1491 // 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	1492 ergo_verbose0(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1493 "do not initiate concurrent cycle",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1494 ergo_format_reason("concurrent cycle already in progress"));
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1495 }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1496 }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1497 }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1498
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1499 class KnownGarbageClosure: public HeapRegionClosure {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1500 G1CollectedHeap* _g1h;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1501 CollectionSetChooser* _hrSorted;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1502
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1503 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1504 KnownGarbageClosure(CollectionSetChooser* hrSorted) :
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1505 _g1h(G1CollectedHeap::heap()), _hrSorted(hrSorted) { }
342 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 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1508 // We only include humongous regions in collection
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1509 // sets when concurrent mark shows that their contained object is
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1510 // unreachable.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1511
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1512 // Do we have any marking information for this region?
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1513 if (r->is_marked()) {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1514 // We will skip any region that's currently used as an old GC
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1515 // alloc region (we should not consider those for collection
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1516 // before we fill them up).
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1517 if (_hrSorted->should_add(r) && !_g1h->is_old_gc_alloc_region(r)) {
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1518 _hrSorted->add_region(r);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1519 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1520 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1521 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1522 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1523 };
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 class ParKnownGarbageHRClosure: public HeapRegionClosure {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1526 G1CollectedHeap* _g1h;
6254 a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6219 diff changeset	1527 CSetChooserParUpdater _cset_updater;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1528
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1529 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1530 ParKnownGarbageHRClosure(CollectionSetChooser* hrSorted,
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1531 uint chunk_size) :
6254 a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6219 diff changeset	1532 _g1h(G1CollectedHeap::heap()),
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6219 diff changeset	1533 _cset_updater(hrSorted, true /* parallel */, chunk_size) { }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1534
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1535 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1536 // Do we have any marking information for this region?
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1537 if (r->is_marked()) {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1538 // We will skip any region that's currently used as an old GC
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1539 // alloc region (we should not consider those for collection
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1540 // before we fill them up).
6254 a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6219 diff changeset	1541 if (_cset_updater.should_add(r) && !_g1h->is_old_gc_alloc_region(r)) {
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6219 diff changeset	1542 _cset_updater.add_region(r);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1543 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1544 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1545 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1546 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1547 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1548
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1549 class ParKnownGarbageTask: public AbstractGangTask {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1550 CollectionSetChooser* _hrSorted;
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1551 uint _chunk_size;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1552 G1CollectedHeap* _g1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1553 public:
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1554 ParKnownGarbageTask(CollectionSetChooser* hrSorted, uint chunk_size) :
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1555 AbstractGangTask("ParKnownGarbageTask"),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1556 _hrSorted(hrSorted), _chunk_size(chunk_size),
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1557 _g1(G1CollectedHeap::heap()) { }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1558
4728 441e946dc1af 7121618: Change type of number of GC workers to unsigned int. jmasa parents: 4727 diff changeset	1559 void work(uint worker_id) {
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1560 ParKnownGarbageHRClosure parKnownGarbageCl(_hrSorted, _chunk_size);
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1561
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1562 // Back to zero for the claim value.
4728 441e946dc1af 7121618: Change type of number of GC workers to unsigned int. jmasa parents: 4727 diff changeset	1563 _g1->heap_region_par_iterate_chunked(&parKnownGarbageCl, worker_id,
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1564 _g1->workers()->active_workers(),
355 0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	1565 HeapRegion::InitialClaimValue);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1566 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1567 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1568
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1569 void
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1570 G1CollectorPolicy::record_concurrent_mark_cleanup_end(int no_of_gc_threads) {
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1571 _collectionSetChooser->clear();
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	1572
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1573 uint region_num = _g1->n_regions();
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1574 if (G1CollectedHeap::use_parallel_gc_threads()) {
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1575 const uint OverpartitionFactor = 4;
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1576 uint WorkUnit;
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1577 // The use of MinChunkSize = 8 in the original code
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1578 // causes some assertion failures when the total number of
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1579 // region is less than 8. The code here tries to fix that.
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1580 // Should the original code also be fixed?
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1581 if (no_of_gc_threads > 0) {
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1582 const uint MinWorkUnit = MAX2(region_num / no_of_gc_threads, 1U);
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1583 WorkUnit = MAX2(region_num / (no_of_gc_threads * OverpartitionFactor),
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1584 MinWorkUnit);
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1585 } else {
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1586 assert(no_of_gc_threads > 0,
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1587 "The active gc workers should be greater than 0");
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1588 // In a product build do something reasonable to avoid a crash.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1589 const uint MinWorkUnit = MAX2(region_num / (uint) ParallelGCThreads, 1U);
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1590 WorkUnit =
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1591 MAX2(region_num / (uint) (ParallelGCThreads * OverpartitionFactor),
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1592 MinWorkUnit);
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1593 }
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1594 _collectionSetChooser->prepare_for_par_region_addition(_g1->n_regions(),
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1595 WorkUnit);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1596 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	1597 (int) WorkUnit);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1598 _g1->workers()->run_task(&parKnownGarbageTask);
355 0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	1599
0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	1600 assert(_g1->check_heap_region_claim_values(HeapRegion::InitialClaimValue),
0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	1601 "sanity check");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1602 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1603 KnownGarbageClosure knownGarbagecl(_collectionSetChooser);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1604 _g1->heap_region_iterate(&knownGarbagecl);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1605 }
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	1606
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1607 _collectionSetChooser->sort_regions();
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1608
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	1609 double end_sec = os::elapsedTime();
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	1610 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	1611 _concurrent_mark_cleanup_times_ms->add(elapsed_time_ms);
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	1612 _cur_mark_stop_world_time_ms += elapsed_time_ms;
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	1613 _prev_collection_pause_end_ms += elapsed_time_ms;
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	1614 _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	1615 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1616
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1617 // Add the heap region at the head of the non-incremental collection set
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	1618 void G1CollectorPolicy::add_old_region_to_cset(HeapRegion* hr) {
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1619 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	1620 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	1621
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1622 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	1623 hr->set_in_collection_set(true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1624 hr->set_next_in_collection_set(_collection_set);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1625 _collection_set = hr;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1626 _collection_set_bytes_used_before += hr->used();
526 818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 470 diff changeset	1627 _g1->register_region_with_in_cset_fast_test(hr);
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	1628 size_t rs_length = hr->rem_set()->occupied();
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	1629 _recorded_rs_lengths += rs_length;
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	1630 _old_cset_region_length += 1;
342 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
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1633 // 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	1634 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	1635 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	1636
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1637 _inc_cset_head = NULL;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1638 _inc_cset_tail = NULL;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1639 _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	1640
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1641 _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	1642 _inc_cset_recorded_rs_lengths = 0;
4727 67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1643 _inc_cset_recorded_rs_lengths_diffs = 0;
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1644 _inc_cset_predicted_elapsed_time_ms = 0.0;
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1645 _inc_cset_predicted_elapsed_time_ms_diffs = 0.0;
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1646 _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	1647 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1648
4727 67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1649 void G1CollectorPolicy::finalize_incremental_cset_building() {
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1650 assert(_inc_cset_build_state == Active, "Precondition");
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1651 assert(SafepointSynchronize::is_at_safepoint(), "should be at a safepoint");
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1652
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1653 // The two "main" fields, _inc_cset_recorded_rs_lengths and
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1654 // _inc_cset_predicted_elapsed_time_ms, are updated by the thread
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1655 // that adds a new region to the CSet. Further updates by the
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1656 // concurrent refinement thread that samples the young RSet lengths
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1657 // are accumulated in the *_diffs fields. Here we add the diffs to
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1658 // the "main" fields.
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1659
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1660 if (_inc_cset_recorded_rs_lengths_diffs >= 0) {
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1661 _inc_cset_recorded_rs_lengths += _inc_cset_recorded_rs_lengths_diffs;
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1662 } else {
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1663 // This is defensive. The diff should in theory be always positive
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1664 // as RSets can only grow between GCs. However, given that we
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1665 // sample their size concurrently with other threads updating them
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1666 // it's possible that we might get the wrong size back, which
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1667 // could make the calculations somewhat inaccurate.
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1668 size_t diffs = (size_t) (-_inc_cset_recorded_rs_lengths_diffs);
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1669 if (_inc_cset_recorded_rs_lengths >= diffs) {
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1670 _inc_cset_recorded_rs_lengths -= diffs;
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1671 } else {
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1672 _inc_cset_recorded_rs_lengths = 0;
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1673 }
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1674 }
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1675 _inc_cset_predicted_elapsed_time_ms +=
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1676 _inc_cset_predicted_elapsed_time_ms_diffs;
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1677
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1678 _inc_cset_recorded_rs_lengths_diffs = 0;
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1679 _inc_cset_predicted_elapsed_time_ms_diffs = 0.0;
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1680 }
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1681
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1682 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	1683 // 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	1684 // * 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	1685 // evacuation pause,
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1686 // * 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	1687 // 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	1688 // * 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	1689 // 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	1690 // 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	1691 // 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	1692 // 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	1693 // refine thread (RSet sampling).
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1694
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1695 double region_elapsed_time_ms = predict_region_elapsed_time_ms(hr, gcs_are_young());
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1696 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	1697 _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	1698 _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	1699 _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	1700
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1701 // 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	1702 // 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	1703 // 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	1704 // rset sampling code
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1705 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	1706 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	1707 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1708
4727 67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1709 void G1CollectorPolicy::update_incremental_cset_info(HeapRegion* hr,
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1710 size_t new_rs_length) {
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1711 // Update the CSet information that is dependent on the new RS length
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1712 assert(hr->is_young(), "Precondition");
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1713 assert(!SafepointSynchronize::is_at_safepoint(),
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1714 "should not be at a safepoint");
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1715
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1716 // We could have updated _inc_cset_recorded_rs_lengths and
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1717 // _inc_cset_predicted_elapsed_time_ms directly but we'd need to do
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1718 // that atomically, as this code is executed by a concurrent
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1719 // refinement thread, potentially concurrently with a mutator thread
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1720 // allocating a new region and also updating the same fields. To
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1721 // avoid the atomic operations we accumulate these updates on two
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1722 // separate fields (*_diffs) and we'll just add them to the "main"
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1723 // fields at the start of a GC.
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1724
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1725 ssize_t old_rs_length = (ssize_t) hr->recorded_rs_length();
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1726 ssize_t rs_lengths_diff = (ssize_t) new_rs_length - old_rs_length;
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1727 _inc_cset_recorded_rs_lengths_diffs += rs_lengths_diff;
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1728
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1729 double old_elapsed_time_ms = hr->predicted_elapsed_time_ms();
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1730 double new_region_elapsed_time_ms = predict_region_elapsed_time_ms(hr, gcs_are_young());
4727 67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1731 double elapsed_ms_diff = new_region_elapsed_time_ms - old_elapsed_time_ms;
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1732 _inc_cset_predicted_elapsed_time_ms_diffs += elapsed_ms_diff;
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1733
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1734 hr->set_recorded_rs_length(new_rs_length);
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1735 hr->set_predicted_elapsed_time_ms(new_region_elapsed_time_ms);
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1736 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1737
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1738 void G1CollectorPolicy::add_region_to_incremental_cset_common(HeapRegion* hr) {
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	1739 assert(hr->is_young(), "invariant");
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	1740 assert(hr->young_index_in_cset() > -1, "should have already been set");
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1741 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	1742
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1743 // 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	1744 // 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	1745 // 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	1746 // 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	1747 // 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	1748 // 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	1749
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1750 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	1751 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	1752
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1753 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	1754 _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	1755
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1756 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	1757 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	1758 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	1759
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1760 _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	1761 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1762
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1763 // 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	1764 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	1765 // 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	1766 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	1767
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1768 // Do the 'common' stuff
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1769 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	1770
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1771 // 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	1772 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	1773 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	1774 _inc_cset_head = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1775 } else {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1776 _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	1777 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1778 _inc_cset_tail = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1779 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1780
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1781 // 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	1782 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	1783 // 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	1784 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	1785
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1786 // Do the 'common' stuff
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1787 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	1788
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1789 // 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	1790 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	1791 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	1792 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	1793 _inc_cset_tail = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1794 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1795 _inc_cset_head = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1796 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1797
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1798 #ifndef PRODUCT
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1799 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	1800 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	1801
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1802 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	1803 HeapRegion* csr = list_head;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1804 while (csr != NULL) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1805 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	1806 assert(csr->in_collection_set(), "bad CS");
6027 8a2e5a6a19a4 7143490: G1: Remove HeapRegion::_top_at_conc_mark_count johnc parents: 6011 diff changeset	1807 st->print_cr(" "HR_FORMAT", P: "PTR_FORMAT "N: "PTR_FORMAT", age: %4d",
8a2e5a6a19a4 7143490: G1: Remove HeapRegion::_top_at_conc_mark_count johnc parents: 6011 diff changeset	1808 HR_FORMAT_PARAMS(csr),
8a2e5a6a19a4 7143490: G1: Remove HeapRegion::_top_at_conc_mark_count johnc parents: 6011 diff changeset	1809 csr->prev_top_at_mark_start(), csr->next_top_at_mark_start(),
8a2e5a6a19a4 7143490: G1: Remove HeapRegion::_top_at_conc_mark_count johnc parents: 6011 diff changeset	1810 csr->age_in_surv_rate_group_cond());
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1811 csr = next;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1812 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1813 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1814 #endif // !PRODUCT
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1815
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1816 double G1CollectorPolicy::reclaimable_bytes_perc(size_t reclaimable_bytes) {
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1817 // Returns the given amount of reclaimable bytes (that represents
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1818 // the amount of reclaimable space still to be collected) as a
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1819 // percentage of the current heap capacity.
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1820 size_t capacity_bytes = _g1->capacity();
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1821 return (double) reclaimable_bytes * 100.0 / (double) capacity_bytes;
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1822 }
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1823
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1824 bool G1CollectorPolicy::next_gc_should_be_mixed(const char* true_action_str,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1825 const char* false_action_str) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1826 CollectionSetChooser* cset_chooser = _collectionSetChooser;
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1827 if (cset_chooser->is_empty()) {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1828 ergo_verbose0(ErgoMixedGCs,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1829 false_action_str,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1830 ergo_format_reason("candidate old regions not available"));
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1831 return false;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1832 }
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1833
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1834 // Is the amount of uncollected reclaimable space above G1HeapWastePercent?
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1835 size_t reclaimable_bytes = cset_chooser->remaining_reclaimable_bytes();
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1836 double reclaimable_perc = reclaimable_bytes_perc(reclaimable_bytes);
5964 21595f05bc93 7146246: G1: expose some of the -XX flags that drive which old regions to collect during mixed GCs tonyp parents: 4912 diff changeset	1837 double threshold = (double) G1HeapWastePercent;
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1838 if (reclaimable_perc <= threshold) {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1839 ergo_verbose4(ErgoMixedGCs,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1840 false_action_str,
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1841 ergo_format_reason("reclaimable percentage not over threshold")
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1842 ergo_format_region("candidate old regions")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1843 ergo_format_byte_perc("reclaimable")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1844 ergo_format_perc("threshold"),
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1845 cset_chooser->remaining_regions(),
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1846 reclaimable_bytes,
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1847 reclaimable_perc, threshold);
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1848 return false;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1849 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1850
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1851 ergo_verbose4(ErgoMixedGCs,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1852 true_action_str,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1853 ergo_format_reason("candidate old regions available")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1854 ergo_format_region("candidate old regions")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1855 ergo_format_byte_perc("reclaimable")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1856 ergo_format_perc("threshold"),
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1857 cset_chooser->remaining_regions(),
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1858 reclaimable_bytes,
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1859 reclaimable_perc, threshold);
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1860 return true;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1861 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1862
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1863 uint G1CollectorPolicy::calc_min_old_cset_length() {
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1864 // The min old CSet region bound is based on the maximum desired
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1865 // number of mixed GCs after a cycle. I.e., even if some old regions
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1866 // look expensive, we should add them to the CSet anyway to make
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1867 // sure we go through the available old regions in no more than the
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1868 // maximum desired number of mixed GCs.
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1869 //
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1870 // The calculation is based on the number of marked regions we added
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1871 // to the CSet chooser in the first place, not how many remain, so
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1872 // that the result is the same during all mixed GCs that follow a cycle.
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1873
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1874 const size_t region_num = (size_t) _collectionSetChooser->length();
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1875 const size_t gc_num = (size_t) MAX2(G1MixedGCCountTarget, (uintx) 1);
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1876 size_t result = region_num / gc_num;
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1877 // emulate ceiling
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1878 if (result * gc_num < region_num) {
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1879 result += 1;
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1880 }
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1881 return (uint) result;
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1882 }
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1883
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1884 uint G1CollectorPolicy::calc_max_old_cset_length() {
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1885 // The max old CSet region bound is based on the threshold expressed
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1886 // as a percentage of the heap size. I.e., it should bound the
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1887 // number of old regions added to the CSet irrespective of how many
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1888 // of them are available.
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1889
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1890 G1CollectedHeap* g1h = G1CollectedHeap::heap();
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1891 const size_t region_num = g1h->n_regions();
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1892 const size_t perc = (size_t) G1OldCSetRegionThresholdPercent;
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1893 size_t result = region_num * perc / 100;
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1894 // emulate ceiling
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1895 if (100 * result < region_num * perc) {
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1896 result += 1;
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1897 }
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1898 return (uint) result;
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1899 }
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1900
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1901
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1902 void G1CollectorPolicy::finalize_cset(double target_pause_time_ms) {
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1903 double young_start_time_sec = os::elapsedTime();
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1904
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1905 YoungList* young_list = _g1->young_list();
4727 67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1906 finalize_incremental_cset_building();
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1907
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1908 guarantee(target_pause_time_ms > 0.0,
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1909 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	1910 target_pause_time_ms));
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1911 guarantee(_collection_set == NULL, "Precondition");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1912
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1913 double base_time_ms = predict_base_elapsed_time_ms(_pending_cards);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1914 double predicted_pause_time_ms = base_time_ms;
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1915 double time_remaining_ms = MAX2(target_pause_time_ms - base_time_ms, 0.0);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1916
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1917 ergo_verbose4(ErgoCSetConstruction \| ErgoHigh,
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1918 "start choosing CSet",
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1919 ergo_format_size("_pending_cards")
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1920 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	1921 ergo_format_ms("remaining time")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1922 ergo_format_ms("target pause time"),
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1923 _pending_cards, base_time_ms, time_remaining_ms, target_pause_time_ms);
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1924
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1925 _last_gc_was_young = gcs_are_young() ? true : false;
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1926
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1927 if (_last_gc_was_young) {
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	1928 _trace_gen0_time_data.increment_young_collection_count();
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1929 } else {
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	1930 _trace_gen0_time_data.increment_mixed_collection_count();
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1931 }
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1932
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1933 // 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	1934 // 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	1935 // [Newly Young Regions ++ Survivors from last pause].
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1936
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1937 uint survivor_region_length = young_list->survivor_length();
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1938 uint eden_region_length = young_list->length() - survivor_region_length;
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	1939 init_cset_region_lengths(eden_region_length, survivor_region_length);
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1940
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1941 HeapRegion* hr = young_list->first_survivor_region();
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1942 while (hr != NULL) {
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1943 assert(hr->is_survivor(), "badly formed young list");
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1944 hr->set_young();
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1945 hr = hr->get_next_young_region();
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1946 }
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1947
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1948 // 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	1949 young_list->clear_survivors();
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1950
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1951 _collection_set = _inc_cset_head;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1952 _collection_set_bytes_used_before = _inc_cset_bytes_used_before;
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1953 time_remaining_ms = MAX2(time_remaining_ms - _inc_cset_predicted_elapsed_time_ms, 0.0);
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1954 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	1955
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1956 ergo_verbose3(ErgoCSetConstruction \| ErgoHigh,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1957 "add young regions to CSet",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1958 ergo_format_region("eden")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1959 ergo_format_region("survivors")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1960 ergo_format_ms("predicted young region time"),
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	1961 eden_region_length, survivor_region_length,
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1962 _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	1963
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1964 // The number of recorded young regions is the incremental
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1965 // collection set's current size
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1966 set_recorded_rs_lengths(_inc_cset_recorded_rs_lengths);
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1967
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1968 double young_end_time_sec = os::elapsedTime();
6628 bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	1969 phase_times()->record_young_cset_choice_time_ms((young_end_time_sec - young_start_time_sec) * 1000.0);
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1970
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1971 // Set the start of the non-young choice time.
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1972 double non_young_start_time_sec = young_end_time_sec;
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1973
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1974 if (!gcs_are_young()) {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1975 CollectionSetChooser* cset_chooser = _collectionSetChooser;
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1976 cset_chooser->verify();
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1977 const uint min_old_cset_length = calc_min_old_cset_length();
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1978 const uint max_old_cset_length = calc_max_old_cset_length();
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1979
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1980 uint expensive_region_num = 0;
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1981 bool check_time_remaining = adaptive_young_list_length();
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1982
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1983 HeapRegion* hr = cset_chooser->peek();
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1984 while (hr != NULL) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1985 if (old_cset_region_length() >= max_old_cset_length) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1986 // Added maximum number of old regions to the CSet.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1987 ergo_verbose2(ErgoCSetConstruction,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1988 "finish adding old regions to CSet",
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1989 ergo_format_reason("old CSet region num reached max")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1990 ergo_format_region("old")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1991 ergo_format_region("max"),
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1992 old_cset_region_length(), max_old_cset_length);
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1993 break;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1994 }
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1995
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1996
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1997 // Stop adding regions if the remaining reclaimable space is
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1998 // not above G1HeapWastePercent.
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1999 size_t reclaimable_bytes = cset_chooser->remaining_reclaimable_bytes();
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2000 double reclaimable_perc = reclaimable_bytes_perc(reclaimable_bytes);
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2001 double threshold = (double) G1HeapWastePercent;
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2002 if (reclaimable_perc <= threshold) {
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2003 // We've added enough old regions that the amount of uncollected
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2004 // reclaimable space is at or below the waste threshold. Stop
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2005 // adding old regions to the CSet.
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2006 ergo_verbose5(ErgoCSetConstruction,
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2007 "finish adding old regions to CSet",
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2008 ergo_format_reason("reclaimable percentage not over threshold")
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2009 ergo_format_region("old")
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2010 ergo_format_region("max")
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2011 ergo_format_byte_perc("reclaimable")
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2012 ergo_format_perc("threshold"),
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2013 old_cset_region_length(),
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2014 max_old_cset_length,
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2015 reclaimable_bytes,
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2016 reclaimable_perc, threshold);
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2017 break;
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2018 }
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2019
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	2020 double predicted_time_ms = predict_region_elapsed_time_ms(hr, gcs_are_young());
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2021 if (check_time_remaining) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2022 if (predicted_time_ms > time_remaining_ms) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2023 // Too expensive for the current CSet.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2024
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2025 if (old_cset_region_length() >= min_old_cset_length) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2026 // We have added the minimum number of old regions to the CSet,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2027 // we are done with this CSet.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2028 ergo_verbose4(ErgoCSetConstruction,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2029 "finish adding old regions to CSet",
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2030 ergo_format_reason("predicted time is too high")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2031 ergo_format_ms("predicted time")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2032 ergo_format_ms("remaining time")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2033 ergo_format_region("old")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2034 ergo_format_region("min"),
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2035 predicted_time_ms, time_remaining_ms,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2036 old_cset_region_length(), min_old_cset_length);
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2037 break;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2038 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2039
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2040 // We'll add it anyway given that we haven't reached the
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2041 // minimum number of old regions.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2042 expensive_region_num += 1;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2043 }
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2044 } else {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2045 if (old_cset_region_length() >= min_old_cset_length) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2046 // In the non-auto-tuning case, we'll finish adding regions
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2047 // to the CSet if we reach the minimum.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2048 ergo_verbose2(ErgoCSetConstruction,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2049 "finish adding old regions to CSet",
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2050 ergo_format_reason("old CSet region num reached min")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2051 ergo_format_region("old")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2052 ergo_format_region("min"),
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2053 old_cset_region_length(), min_old_cset_length);
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2054 break;
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2055 }
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2056 }
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2057
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2058 // We will add this region to the CSet.
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2059 time_remaining_ms = MAX2(time_remaining_ms - predicted_time_ms, 0.0);
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2060 predicted_pause_time_ms += predicted_time_ms;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2061 cset_chooser->remove_and_move_to_next(hr);
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2062 _g1->old_set_remove(hr);
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2063 add_old_region_to_cset(hr);
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2064
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2065 hr = cset_chooser->peek();
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2066 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2067 if (hr == NULL) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2068 ergo_verbose0(ErgoCSetConstruction,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2069 "finish adding old regions to CSet",
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2070 ergo_format_reason("candidate old regions not available"));
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2071 }
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2072
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2073 if (expensive_region_num > 0) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2074 // We print the information once here at the end, predicated on
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2075 // whether we added any apparently expensive regions or not, to
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2076 // avoid generating output per region.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2077 ergo_verbose4(ErgoCSetConstruction,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2078 "added expensive regions to CSet",
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2079 ergo_format_reason("old CSet region num not reached min")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2080 ergo_format_region("old")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2081 ergo_format_region("expensive")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2082 ergo_format_region("min")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2083 ergo_format_ms("remaining time"),
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2084 old_cset_region_length(),
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2085 expensive_region_num,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2086 min_old_cset_length,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2087 time_remaining_ms);
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2088 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2089
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	2090 cset_chooser->verify();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2091 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2092
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2093 stop_incremental_cset_building();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2094
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2095 ergo_verbose5(ErgoCSetConstruction,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2096 "finish choosing CSet",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2097 ergo_format_region("eden")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2098 ergo_format_region("survivors")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2099 ergo_format_region("old")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2100 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	2101 ergo_format_ms("target pause time"),
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	2102 eden_region_length, survivor_region_length,
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	2103 old_cset_region_length(),
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2104 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	2105
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2106 double non_young_end_time_sec = os::elapsedTime();
6628 bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	2107 phase_times()->record_non_young_cset_choice_time_ms((non_young_end_time_sec - non_young_start_time_sec) * 1000.0);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2108 }
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2109
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2110 void TraceGen0TimeData::record_start_collection(double time_to_stop_the_world_ms) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2111 if(TraceGen0Time) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2112 _all_stop_world_times_ms.add(time_to_stop_the_world_ms);
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2113 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2114 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2115
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2116 void TraceGen0TimeData::record_yield_time(double yield_time_ms) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2117 if(TraceGen0Time) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2118 _all_yield_times_ms.add(yield_time_ms);
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2119 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2120 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2121
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2122 void TraceGen0TimeData::record_end_collection(double pause_time_ms, G1GCPhaseTimes* phase_times) {
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2123 if(TraceGen0Time) {
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2124 _total.add(pause_time_ms);
922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2125 _other.add(pause_time_ms - phase_times->accounted_time_ms());
6628 bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	2126 _root_region_scan_wait.add(phase_times->root_region_scan_wait_time_ms());
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	2127 _parallel.add(phase_times->cur_collection_par_time_ms());
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	2128 _ext_root_scan.add(phase_times->average_last_ext_root_scan_time());
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	2129 _satb_filtering.add(phase_times->average_last_satb_filtering_times_ms());
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	2130 _update_rs.add(phase_times->average_last_update_rs_time());
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	2131 _scan_rs.add(phase_times->average_last_scan_rs_time());
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	2132 _obj_copy.add(phase_times->average_last_obj_copy_time());
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	2133 _termination.add(phase_times->average_last_termination_time());
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2134
6628 bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	2135 double parallel_known_time = phase_times->average_last_ext_root_scan_time() +
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	2136 phase_times->average_last_satb_filtering_times_ms() +
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	2137 phase_times->average_last_update_rs_time() +
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	2138 phase_times->average_last_scan_rs_time() +
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	2139 phase_times->average_last_obj_copy_time() +
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	2140 + phase_times->average_last_termination_time();
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2141
6628 bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	2142 double parallel_other_time = phase_times->cur_collection_par_time_ms() - parallel_known_time;
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2143 _parallel_other.add(parallel_other_time);
6628 bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	2144 _clear_ct.add(phase_times->cur_clear_ct_time_ms());
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2145 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2146 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2147
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2148 void TraceGen0TimeData::increment_young_collection_count() {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2149 if(TraceGen0Time) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2150 ++_young_pause_num;
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2151 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2152 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2153
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2154 void TraceGen0TimeData::increment_mixed_collection_count() {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2155 if(TraceGen0Time) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2156 ++_mixed_pause_num;
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2157 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2158 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2159
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2160 void TraceGen0TimeData::print_summary(const char* str,
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2161 const NumberSeq* seq) const {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2162 double sum = seq->sum();
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2163 gclog_or_tty->print_cr("%-27s = %8.2lf s (avg = %8.2lf ms)",
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2164 str, sum / 1000.0, seq->avg());
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2165 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2166
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2167 void TraceGen0TimeData::print_summary_sd(const char* str,
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2168 const NumberSeq* seq) const {
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2169 print_summary(str, seq);
922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2170 gclog_or_tty->print_cr("%+45s = %5d, std dev = %8.2lf ms, max = %8.2lf ms)",
922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2171 "(num", seq->num(), seq->sd(), seq->maximum());
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2172 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2173
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2174 void TraceGen0TimeData::print() const {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2175 if (!TraceGen0Time) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2176 return;
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2177 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2178
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2179 gclog_or_tty->print_cr("ALL PAUSES");
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2180 print_summary_sd(" Total", &_total);
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2181 gclog_or_tty->print_cr("");
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2182 gclog_or_tty->print_cr("");
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2183 gclog_or_tty->print_cr(" Young GC Pauses: %8d", _young_pause_num);
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2184 gclog_or_tty->print_cr(" Mixed GC Pauses: %8d", _mixed_pause_num);
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2185 gclog_or_tty->print_cr("");
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2186
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2187 gclog_or_tty->print_cr("EVACUATION PAUSES");
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2188
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2189 if (_young_pause_num == 0 && _mixed_pause_num == 0) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2190 gclog_or_tty->print_cr("none");
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2191 } else {
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2192 print_summary_sd(" Evacuation Pauses", &_total);
922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2193 print_summary(" Root Region Scan Wait", &_root_region_scan_wait);
922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2194 print_summary(" Parallel Time", &_parallel);
922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2195 print_summary(" Ext Root Scanning", &_ext_root_scan);
922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2196 print_summary(" SATB Filtering", &_satb_filtering);
922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2197 print_summary(" Update RS", &_update_rs);
922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2198 print_summary(" Scan RS", &_scan_rs);
922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2199 print_summary(" Object Copy", &_obj_copy);
922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2200 print_summary(" Termination", &_termination);
922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2201 print_summary(" Parallel Other", &_parallel_other);
922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2202 print_summary(" Clear CT", &_clear_ct);
922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2203 print_summary(" Other", &_other);
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2204 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2205 gclog_or_tty->print_cr("");
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2206
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2207 gclog_or_tty->print_cr("MISC");
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2208 print_summary_sd(" Stop World", &_all_stop_world_times_ms);
922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2209 print_summary_sd(" Yields", &_all_yield_times_ms);
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2210 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2211
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2212 void TraceGen1TimeData::record_full_collection(double full_gc_time_ms) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2213 if (TraceGen1Time) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2214 _all_full_gc_times.add(full_gc_time_ms);
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2215 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2216 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2217
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2218 void TraceGen1TimeData::print() const {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2219 if (!TraceGen1Time) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2220 return;
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2221 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2222
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2223 if (_all_full_gc_times.num() > 0) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2224 gclog_or_tty->print("\n%4d full_gcs: total time = %8.2f s",
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2225 _all_full_gc_times.num(),
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2226 _all_full_gc_times.sum() / 1000.0);
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2227 gclog_or_tty->print_cr(" (avg = %8.2fms).", _all_full_gc_times.avg());
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2228 gclog_or_tty->print_cr(" [std. dev = %8.2f ms, max = %8.2f ms]",
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2229 _all_full_gc_times.sd(),
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2230 _all_full_gc_times.maximum());
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2231 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2232 }

Mercurial > hg > graal-compiler

annotate src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp @ 10098:71013d764f6e