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

annotate src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp @ 17833:bfdf528be8e8

8038498: Fix includes and C inlining after 8035330 Summary: Change 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure broke the debug build on AIX. The method do_oop_partial_array() is added in a header, but requires the inline function par_write_ref() through several inlined calls. In some cpp files, like arguments.cpp, par_write_ref() is not defined as the corresponding inline header and is not included. The AIX debug VM does not start because of the missing symbol. This change solves this by cleaning up include dependencies. Reviewed-by: tschatzl, stefank

author	tschatzl
date	Fri, 04 Apr 2014 10:43:56 +0200
parents	8f07aa079343
children	284953caf7aa 270d7cb38f40

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
10291 48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	127 _eden_used_bytes_before_gc(0),
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	128 _survivor_used_bytes_before_gc(0),
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	129 _heap_used_bytes_before_gc(0),
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	130 _metaspace_used_bytes_before_gc(0),
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	131 _eden_capacity_bytes_before_gc(0),
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	132 _heap_capacity_bytes_before_gc(0),
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	133
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	134 _eden_cset_region_length(0),
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	135 _survivor_cset_region_length(0),
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	136 _old_cset_region_length(0),
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	137
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	138 _collection_set(NULL),
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	139 _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	140
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	141 // Incremental CSet attributes
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	142 _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	143 _inc_cset_head(NULL),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	144 _inc_cset_tail(NULL),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	145 _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	146 _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	147 _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	148 _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	149 _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	150 _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	151
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	152 #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	153 #pragma warning( disable:4355 ) // 'this' : used in base member initializer list
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	154 #endif // _MSC_VER
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	155
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	156 _short_lived_surv_rate_group(new SurvRateGroup(this, "Short Lived",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	157 G1YoungSurvRateNumRegionsSummary)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	158 _survivor_surv_rate_group(new SurvRateGroup(this, "Survivor",
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	159 G1YoungSurvRateNumRegionsSummary)),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	160 // add here any more surv rate groups
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	161 _recorded_survivor_regions(0),
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	162 _recorded_survivor_head(NULL),
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	163 _recorded_survivor_tail(NULL),
1356 56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	164 _survivors_age_table(true),
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	165
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	166 _gc_overhead_perc(0.0) {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	167
942 2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 936 diff changeset	168 // 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	169 // 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	170 // so it's done as soon as possible.
12178 84683e78e713 8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size brutisso parents: 12110 diff changeset	171
84683e78e713 8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size brutisso parents: 12110 diff changeset	172 // It would have been natural to pass initial_heap_byte_size() and
84683e78e713 8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size brutisso parents: 12110 diff changeset	173 // max_heap_byte_size() to setup_heap_region_size() but those have
84683e78e713 8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size brutisso parents: 12110 diff changeset	174 // not been set up at this point since they should be aligned with
84683e78e713 8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size brutisso parents: 12110 diff changeset	175 // the region size. So, there is a circular dependency here. We base
84683e78e713 8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size brutisso parents: 12110 diff changeset	176 // the region size on the heap size, but the heap size should be
84683e78e713 8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size brutisso parents: 12110 diff changeset	177 // aligned with the region size. To get around this we use the
84683e78e713 8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size brutisso parents: 12110 diff changeset	178 // unaligned values for the heap.
84683e78e713 8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size brutisso parents: 12110 diff changeset	179 HeapRegion::setup_heap_region_size(InitialHeapSize, MaxHeapSize);
1261 0414c1049f15 6923991: G1: improve scalability of RSet scanning iveresov parents: 1111 diff changeset	180 HeapRegionRemSet::setup_remset_size();
942 2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 936 diff changeset	181
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	182 G1ErgoVerbose::initialize();
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	183 if (PrintAdaptiveSizePolicy) {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	184 // 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	185 G1ErgoVerbose::set_enabled(true);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	186 // 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	187 // 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	188 // changed in the future.
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	189 G1ErgoVerbose::set_level(ErgoHigh);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	190 } else {
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	191 G1ErgoVerbose::set_enabled(false);
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	192 }
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	193
1391 79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	194 // Verify PLAB sizes
3986 65a8ff39a6da 7095194: G1: HeapRegion::GrainBytes, GrainWords, and CardsPerRegion should be size_t johnc parents: 3982 diff changeset	195 const size_t region_size = HeapRegion::GrainWords;
1391 79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	196 if (YoungPLABSize > region_size \|\| OldPLABSize > region_size) {
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	197 char buffer[128];
3986 65a8ff39a6da 7095194: G1: HeapRegion::GrainBytes, GrainWords, and CardsPerRegion should be size_t johnc parents: 3982 diff changeset	198 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	199 OldPLABSize > region_size ? "Old" : "Young", region_size);
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	200 vm_exit_during_initialization(buffer);
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	201 }
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	202
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	203 _recent_prev_end_times_for_all_gcs_sec->add(os::elapsedTime());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	204 _prev_collection_pause_end_ms = os::elapsedTime() * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	205
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	206 _phase_times = new G1GCPhaseTimes(_parallel_gc_threads);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	207
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	208 int index = MIN2(_parallel_gc_threads - 1, 7);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	209
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	210 _rs_length_diff_seq->add(rs_length_diff_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	211 _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	212 _young_cards_per_entry_ratio_seq->add(
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	213 young_cards_per_entry_ratio_defaults[index]);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	214 _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	215 _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	216 _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	217 _young_other_cost_per_region_ms_seq->add(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	218 young_other_cost_per_region_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	219 _non_young_other_cost_per_region_ms_seq->add(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	220 non_young_other_cost_per_region_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	221
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	222 // 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	223 // 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	224 // 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	225 // 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	226 // 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	227 // 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	228 // 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	229 // 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	230 // 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	231
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 // 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	233 // 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	234 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	235 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	236 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	237 "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	238 }
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 }
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 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	241 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	242 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	243 "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	244 }
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 }
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
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 // 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	248 // 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	249 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	250 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	251 // 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	252 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	253 } 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	254 // 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	255 // 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	256 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	257 "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	258 }
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 }
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
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 // 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	262 // 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	263 // 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	264 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	265 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	266 }
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	267
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 // 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	269 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	270 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	271 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	272 "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	273 "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	274 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	275 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	276 }
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	277
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	278 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	279 double time_slice = (double) GCPauseIntervalMillis / 1000.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	280 _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	281
f1fb03a251e9 8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED poonam parents: 7449 diff changeset	282 uintx confidence_perc = G1ConfidencePercent;
f1fb03a251e9 8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED poonam parents: 7449 diff changeset	283 // 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	284 if (confidence_perc > 100) {
f1fb03a251e9 8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED poonam parents: 7449 diff changeset	285 confidence_perc = 100;
f1fb03a251e9 8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED poonam parents: 7449 diff changeset	286 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	287 "it's been updated to %u", confidence_perc);
f1fb03a251e9 8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED poonam parents: 7449 diff changeset	288 }
f1fb03a251e9 8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED poonam parents: 7449 diff changeset	289 _sigma = (double) confidence_perc / 100.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	290
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	291 // start conservatively (around 50ms is about right)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	292 _concurrent_mark_remark_times_ms->add(0.05);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	293 _concurrent_mark_cleanup_times_ms->add(0.20);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	294 _tenuring_threshold = MaxTenuringThreshold;
3868 ae73da50be4b 7081064: G1: remove develop params G1FixedSurvivorSpaceSize, G1FixedTenuringThreshold, and G1FixedEdenSize tonyp parents: 3867 diff changeset	295 // _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	296 // update_young_list_target_length() during initialization.
3868 ae73da50be4b 7081064: G1: remove develop params G1FixedSurvivorSpaceSize, G1FixedTenuringThreshold, and G1FixedEdenSize tonyp parents: 3867 diff changeset	297 _max_survivor_regions = 0;
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	298
1356 56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	299 assert(GCTimeRatio > 0,
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	300 "we should have set it to a default value set_g1_gc_flags() "
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	301 "if a user set it to 0");
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	302 _gc_overhead_perc = 100.0 * (1.0 / (1.0 + GCTimeRatio));
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	303
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	304 uintx reserve_perc = G1ReservePercent;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	305 // 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	306 if (reserve_perc > 50) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	307 reserve_perc = 50;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	308 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	309 "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	310 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	311 _reserve_factor = (double) reserve_perc / 100.0;
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	312 // 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	313 // 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	314 _reserve_regions = 0;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	315
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	316 _collectionSetChooser = new CollectionSetChooser();
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	317 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	318
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	319 void G1CollectorPolicy::initialize_alignments() {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	320 _space_alignment = HeapRegion::GrainBytes;
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	321 size_t card_table_alignment = GenRemSet::max_alignment_constraint(GenRemSet::CardTable);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	322 size_t page_size = UseLargePages ? os::large_page_size() : os::vm_page_size();
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	323 _heap_alignment = MAX3(card_table_alignment, _space_alignment, page_size);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	324 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	325
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	326 void G1CollectorPolicy::initialize_flags() {
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	327 if (G1HeapRegionSize != HeapRegion::GrainBytes) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	328 FLAG_SET_ERGO(uintx, G1HeapRegionSize, HeapRegion::GrainBytes);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	329 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	330
547 1e458753107d 6802413: G1: G1FixedSurvivorSpaceSize should be converted into regions in calculate_survivors_policy() apetrusenko parents: 545 diff changeset	331 if (SurvivorRatio < 1) {
1e458753107d 6802413: G1: G1FixedSurvivorSpaceSize should be converted into regions in calculate_survivors_policy() apetrusenko parents: 545 diff changeset	332 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	333 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	334 CollectorPolicy::initialize_flags();
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	335 _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	336 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	337
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	338 void G1CollectorPolicy::post_heap_initialize() {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	339 uintx max_regions = G1CollectedHeap::heap()->max_regions();
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	340 size_t max_young_size = (size_t)_young_gen_sizer->max_young_length(max_regions) * HeapRegion::GrainBytes;
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	341 if (max_young_size != MaxNewSize) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	342 FLAG_SET_ERGO(uintx, MaxNewSize, max_young_size);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	343 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	344 }
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	345
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	346 G1YoungGenSizer::G1YoungGenSizer() : _sizer_kind(SizerDefaults), _adaptive_size(true),
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	347 _min_desired_young_length(0), _max_desired_young_length(0) {
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	348 if (FLAG_IS_CMDLINE(NewRatio)) {
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	349 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	350 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	351 } else {
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	352 _sizer_kind = SizerNewRatio;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	353 _adaptive_size = false;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	354 return;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	355 }
3976 d912b598c6c3 7091032: G1: assert failure when NewRatio is used tonyp parents: 3927 diff changeset	356 }
1285 a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	357
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	358 if (NewSize > MaxNewSize) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	359 if (FLAG_IS_CMDLINE(MaxNewSize)) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	360 warning("NewSize (" SIZE_FORMAT "k) is greater than the MaxNewSize (" SIZE_FORMAT "k). "
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	361 "A new max generation size of " SIZE_FORMAT "k will be used.",
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	362 NewSize/K, MaxNewSize/K, NewSize/K);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	363 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	364 MaxNewSize = NewSize;
12894 24f32d09a0d7 8023643: G1 assert failed when NewSize was specified greater than MaxNewSize jwilhelm parents: 12830 diff changeset	365 }
24f32d09a0d7 8023643: G1 assert failed when NewSize was specified greater than MaxNewSize jwilhelm parents: 12830 diff changeset	366
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	367 if (FLAG_IS_CMDLINE(NewSize)) {
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	368 _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	369 1U);
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	370 if (FLAG_IS_CMDLINE(MaxNewSize)) {
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	371 _max_desired_young_length =
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	372 MAX2((uint) (MaxNewSize / HeapRegion::GrainBytes),
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	373 1U);
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	374 _sizer_kind = SizerMaxAndNewSize;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	375 _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	376 } else {
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	377 _sizer_kind = SizerNewSizeOnly;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	378 }
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	379 } else if (FLAG_IS_CMDLINE(MaxNewSize)) {
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	380 _max_desired_young_length =
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	381 MAX2((uint) (MaxNewSize / HeapRegion::GrainBytes),
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	382 1U);
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	383 _sizer_kind = SizerMaxNewSizeOnly;
1285 a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	384 }
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	385 }
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	386
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	387 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	388 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	389 return MAX2(1U, default_value);
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
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	392 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	393 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	394 return MAX2(1U, default_value);
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	395 }
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	396
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	397 void G1YoungGenSizer::recalculate_min_max_young_length(uint number_of_heap_regions, uint* min_young_length, uint* max_young_length) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	398 assert(number_of_heap_regions > 0, "Heap must be initialized");
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	399
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	400 switch (_sizer_kind) {
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	401 case SizerDefaults:
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	402 *min_young_length = calculate_default_min_length(number_of_heap_regions);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	403 *max_young_length = calculate_default_max_length(number_of_heap_regions);
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	404 break;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	405 case SizerNewSizeOnly:
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	406 *max_young_length = calculate_default_max_length(number_of_heap_regions);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	407 max_young_length = MAX2(min_young_length, *max_young_length);
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	408 break;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	409 case SizerMaxNewSizeOnly:
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	410 *min_young_length = calculate_default_min_length(number_of_heap_regions);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	411 min_young_length = MIN2(min_young_length, *max_young_length);
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	412 break;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	413 case SizerMaxAndNewSize:
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	414 // 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	415 break;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	416 case SizerNewRatio:
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	417 *min_young_length = number_of_heap_regions / (NewRatio + 1);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	418 max_young_length = min_young_length;
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	419 break;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	420 default:
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	421 ShouldNotReachHere();
1285 a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	422 }
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	423
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	424 assert(min_young_length <= max_young_length, "Invalid min/max young gen size values");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	425 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	426
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	427 uint G1YoungGenSizer::max_young_length(uint number_of_heap_regions) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	428 // We need to pass the desired values because recalculation may not update these
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	429 // values in some cases.
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	430 uint temp = _min_desired_young_length;
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	431 uint result = _max_desired_young_length;
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	432 recalculate_min_max_young_length(number_of_heap_regions, &temp, &result);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	433 return result;
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	434 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	435
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	436 void G1YoungGenSizer::heap_size_changed(uint new_number_of_heap_regions) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	437 recalculate_min_max_young_length(new_number_of_heap_regions, &_min_desired_young_length,
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13057 diff changeset	438 &_max_desired_young_length);
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	439 }
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	440
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	441 void G1CollectorPolicy::init() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	442 // Set aside an initial future to_space.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	443 _g1 = G1CollectedHeap::heap();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	444
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	445 assert(Heap_lock->owned_by_self(), "Locking discipline.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	446
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	447 initialize_gc_policy_counters();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	448
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	449 if (adaptive_young_list_length()) {
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	450 _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	451 } else {
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	452 _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	453 }
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	454 _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	455 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	456
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	457 // 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	458 // 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	459 start_incremental_cset_building();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	460 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	461
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	462 // 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	463 void G1CollectorPolicy::initialize_gc_policy_counters() {
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	464 _gc_policy_counters = new GCPolicyCounters("GarbageFirst", 1, 3);
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	465 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	466
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	467 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	468 double base_time_ms,
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	469 uint base_free_regions,
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	470 double target_pause_time_ms) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	471 if (young_length >= base_free_regions) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	472 // end condition 1: not enough space for the young regions
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	473 return false;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	474 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	475
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	476 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	477 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	478 (size_t) (accum_surv_rate * (double) HeapRegion::GrainBytes);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	479 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	480 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	481 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	482 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	483 // end condition 2: prediction is over the target pause time
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	484 return false;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	485 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	486
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	487 size_t free_bytes =
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	488 (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	489 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	490 // end condition 3: out-of-space (conservatively!)
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	491 return false;
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	492 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	493
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	494 // success!
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	495 return true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	496 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	497
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	498 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	499 // re-calculate the necessary reserve
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	500 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	501 // 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	502 // 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	503 _reserve_regions = (uint) ceil(reserve_regions_d);
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	504
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4728 diff changeset	505 _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	506 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	507
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	508 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	509 uint base_min_length) {
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	510 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	511 if (adaptive_young_list_length()) {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	512 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	513 double now_sec = os::elapsedTime();
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	514 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	515 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	516 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	517 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	518 // 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	519 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	520 }
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	521 desired_min_length += base_min_length;
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	522 // 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	523 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	524 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	525
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	526 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	527 // 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	528 // 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	529 // 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	530 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	531 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	532
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	533 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	534 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	535 // 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	536 // otherwise, use the given value.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	537 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	538 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	539
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	540 // 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	541
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	542 // 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	543 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	544 // 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	545 // 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	546 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	547 uint desired_min_length =
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	548 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	549 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	550 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	551 }
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 // 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	554
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	555 // 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	556 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	557 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	558 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	559 }
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	560 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	561 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	562 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	563 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	564
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	565 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	566 if (adaptive_young_list_length()) {
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	567 if (gcs_are_young()) {
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	568 young_list_target_length =
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	569 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	570 base_min_length,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	571 desired_min_length,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	572 desired_max_length);
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	573 _rs_lengths_prediction = rs_lengths;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	574 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	575 // 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	576 // 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	577 // 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	578 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	579 } else {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	580 // 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	581 // 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	582 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	583 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	584
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	585 // 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	586 // 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	587 // 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	588 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	589 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	590 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	591 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	592 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	593 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	594
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	595 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	596 "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	597 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	598 _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	599
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	600 update_max_gc_locker_expansion();
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	601 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	602
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	603 uint
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	604 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	605 uint base_min_length,
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	606 uint desired_min_length,
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	607 uint desired_max_length) {
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	608 assert(adaptive_young_list_length(), "pre-condition");
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	609 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	610
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	611 // 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	612 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	613 return desired_min_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	614 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	615
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	616 // 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	617 // 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	618 // 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	619 // 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	620 // survivor_regions_evac_time prediction.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	621 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	622 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	623 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	624 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	625
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	626 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	627 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	628 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	629 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	630 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	631 double base_time_ms =
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	632 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	633 survivor_regions_evac_time;
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	634 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	635 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	636 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	637 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	638 }
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 // 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	641 // 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	642
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	643 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	644 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	645 // 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	646 // 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	647 // 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	648 // 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	649 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	650 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	651 // 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	652 // 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	653 // 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	654 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	655 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	656 // 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	657 // 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	658 // length. The loop invariants are:
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	659 //
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	660 // 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	661 // 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	662 // 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	663 //
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	664 // 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	665 // 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	666 // 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	667 // 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	668 // 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	669 // 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	670
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	671 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	672 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	673 while (diff > 0) {
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	674 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	675 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	676 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	677 min_young_length = young_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	678 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	679 max_young_length = young_length;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	680 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	681 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	682 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	683 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	684 // 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	685 // 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	686
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	687 // 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	688 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	689 "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	690 "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	691 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	692 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	693 "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	694 "fit into the pause target");
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	695 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	696 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	697 "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	698 "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	699 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	700 } else {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	701 // 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	702 // 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	703 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	704 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	705 }
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	706
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	707 double G1CollectorPolicy::predict_survivor_regions_evac_time() {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	708 double survivor_regions_evac_time = 0.0;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	709 for (HeapRegion * r = _recorded_survivor_head;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	710 r != NULL && r != _recorded_survivor_tail->get_next_young_region();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	711 r = r->get_next_young_region()) {
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	712 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	713 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	714 return survivor_regions_evac_time;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	715 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	716
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	717 void G1CollectorPolicy::revise_young_list_target_length_if_necessary() {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	718 guarantee( adaptive_young_list_length(), "should not call this otherwise" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	719
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	720 size_t rs_lengths = _g1->young_list()->sampled_rs_lengths();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	721 if (rs_lengths > _rs_lengths_prediction) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	722 // add 10% to avoid having to recalculate often
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	723 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	724 update_young_list_target_length(rs_lengths_prediction);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	725 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	726 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	727
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	728
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	729
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	730 HeapWord* G1CollectorPolicy::mem_allocate_work(size_t size,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	731 bool is_tlab,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	732 bool* gc_overhead_limit_was_exceeded) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	733 guarantee(false, "Not using this policy feature yet.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	734 return NULL;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	735 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	736
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	737 // This method controls how a collector handles one or more
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	738 // of its generations being fully allocated.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	739 HeapWord* G1CollectorPolicy::satisfy_failed_allocation(size_t size,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	740 bool is_tlab) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	741 guarantee(false, "Not using this policy feature yet.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	742 return NULL;
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
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 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	747 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	748 HeapRegion* head = _g1->young_list()->first_region();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	749 return
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	750 verify_young_ages(head, _short_lived_surv_rate_group);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	751 // also call verify_young_ages on any additional surv rate groups
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	754 bool
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	755 G1CollectorPolicy::verify_young_ages(HeapRegion* head,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	756 SurvRateGroup *surv_rate_group) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	757 guarantee( surv_rate_group != NULL, "pre-condition" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	758
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	759 const char* name = surv_rate_group->name();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	760 bool ret = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	761 int prev_age = -1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	762
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	763 for (HeapRegion* curr = head;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	764 curr != NULL;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	765 curr = curr->get_next_young_region()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	766 SurvRateGroup* group = curr->surv_rate_group();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	767 if (group == NULL && !curr->is_survivor()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	768 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	769 ret = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	770 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	771
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	772 if (surv_rate_group == group) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	773 int age = curr->age_in_surv_rate_group();
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 if (age < 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	776 gclog_or_tty->print_cr("## %s: encountered negative age", name);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	777 ret = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	778 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	779
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	780 if (age <= prev_age) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	781 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	782 "(%d, %d)", name, age, prev_age);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	783 ret = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	784 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	785 prev_age = age;
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 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	788
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	789 return ret;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	790 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	791 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	792
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	793 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	794 _full_collection_start_sec = os::elapsedTime();
10291 48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	795 record_heap_size_info_at_start(true /* full */);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	796 // 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	797 _g1->set_full_collection();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	798 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	799
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	800 void G1CollectorPolicy::record_full_collection_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	801 // Consider this like a collection pause for the purposes of allocation
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	802 // since last pause.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	803 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	804 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	805 double full_gc_time_ms = full_gc_time_sec * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	806
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	807 _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	808
595 3698e8f47799 6804746: G1: guarantee(variance() > -1.0,"variance should be >= 0") (due to evacuation failure) tonyp parents: 547 diff changeset	809 update_recent_gc_times(end_sec, full_gc_time_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	810
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	811 _g1->clear_full_collection();
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 // "Nuke" the heuristics that control the young/mixed GC
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	814 // 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	815 set_gcs_are_young(true);
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	816 _last_young_gc = false;
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	817 clear_initiate_conc_mark_if_possible();
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	818 clear_during_initial_mark_pause();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	819 _in_marking_window = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	820 _in_marking_window_im = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	821
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	822 _short_lived_surv_rate_group->start_adding_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	823 // also call this on any additional surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	824
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	825 record_survivor_regions(0, NULL, NULL);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	826
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	827 _free_regions_at_end_of_collection = _g1->free_regions();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	828 // Reset survivors SurvRateGroup.
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	829 _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	830 update_young_list_target_length();
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	831 _collectionSetChooser->clear();
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	832 }
342 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 void G1CollectorPolicy::record_stop_world_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	835 _stop_world_start = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	836 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	837
10098 71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	838 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	839 // 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	840 // 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	841 // 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	842 update_survivors_policy();
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	843
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	844 assert(_g1->used() == _g1->recalculate_used(),
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	845 err_msg("sanity, used: "SIZE_FORMAT" recalculate_used: "SIZE_FORMAT,
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	846 _g1->used(), _g1->recalculate_used()));
342 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 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	849 _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	850 _stop_world_start = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	851
10291 48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	852 record_heap_size_info_at_start(false /* full */);
10098 71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	853
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	854 phase_times()->record_cur_collection_start_sec(start_time_sec);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	855 _pending_cards = _g1->pending_card_num();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	856
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	857 _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	858 _bytes_copied_during_gc = 0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	859
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	860 _last_gc_was_young = false;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	861
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	862 // do that for any other surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	863 _short_lived_surv_rate_group->stop_adding_regions();
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	864 _survivors_age_table.clear();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	865
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	866 assert( verify_young_ages(), "region age verification" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	867 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	868
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	869 void G1CollectorPolicy::record_concurrent_mark_init_end(double
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	870 mark_init_elapsed_time_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	871 _during_marking = true;
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	872 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	873 clear_during_initial_mark_pause();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	874 _cur_mark_stop_world_time_ms = mark_init_elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	875 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	876
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	877 void G1CollectorPolicy::record_concurrent_mark_remark_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	878 _mark_remark_start_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	879 _during_marking = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	880 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	881
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	882 void G1CollectorPolicy::record_concurrent_mark_remark_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	883 double end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	884 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	885 _concurrent_mark_remark_times_ms->add(elapsed_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	886 _cur_mark_stop_world_time_ms += elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	887 _prev_collection_pause_end_ms += elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	888
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	889 _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	890 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	891
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	892 void G1CollectorPolicy::record_concurrent_mark_cleanup_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	893 _mark_cleanup_start_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	894 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	895
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	896 void G1CollectorPolicy::record_concurrent_mark_cleanup_completed() {
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	897 _last_young_gc = true;
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	898 _in_marking_window = false;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	899 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	900
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	901 void G1CollectorPolicy::record_concurrent_pause() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	902 if (_stop_world_start > 0.0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	903 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	904 _trace_gen0_time_data.record_yield_time(yield_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	905 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	906 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	907
4834 6a78aa6ac1ff 7132311: G1: assert((s == klass->oop_size(this)) \|\| (Universe::heap()->is_gc_active() && ((is_typeArray()... brutisso parents: 4829 diff changeset	908 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	909 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	910 return false;
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	911 }
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	912
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	913 size_t marking_initiating_used_threshold =
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	914 (_g1->capacity() / 100) * InitiatingHeapOccupancyPercent;
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	915 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	916 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	917
6a78aa6ac1ff 7132311: G1: assert((s == klass->oop_size(this)) \|\| (Universe::heap()->is_gc_active() && ((is_typeArray()... brutisso parents: 4829 diff changeset	918 if ((cur_used_bytes + alloc_byte_size) > marking_initiating_used_threshold) {
11125 f4311079200c 8020155: PSR:PERF G1 not collecting old regions when humongous allocations interfer brutisso parents: 10405 diff changeset	919 if (gcs_are_young() && !_last_young_gc) {
4834 6a78aa6ac1ff 7132311: G1: assert((s == klass->oop_size(this)) \|\| (Universe::heap()->is_gc_active() && ((is_typeArray()... brutisso parents: 4829 diff changeset	920 ergo_verbose5(ErgoConcCycles,
4829 9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	921 "request concurrent cycle initiation",
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	922 ergo_format_reason("occupancy higher than threshold")
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	923 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	924 ergo_format_byte("allocation request")
4829 9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	925 ergo_format_byte_perc("threshold")
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	926 ergo_format_str("source"),
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	927 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	928 alloc_byte_size,
4829 9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	929 marking_initiating_used_threshold,
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	930 (double) InitiatingHeapOccupancyPercent,
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	931 source);
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	932 return true;
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	933 } else {
4834 6a78aa6ac1ff 7132311: G1: assert((s == klass->oop_size(this)) \|\| (Universe::heap()->is_gc_active() && ((is_typeArray()... brutisso parents: 4829 diff changeset	934 ergo_verbose5(ErgoConcCycles,
4829 9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	935 "do not request concurrent cycle initiation",
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	936 ergo_format_reason("still doing mixed collections")
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	937 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	938 ergo_format_byte("allocation request")
4829 9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	939 ergo_format_byte_perc("threshold")
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	940 ergo_format_str("source"),
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	941 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	942 alloc_byte_size,
4829 9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	943 marking_initiating_used_threshold,
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	944 (double) InitiatingHeapOccupancyPercent,
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	945 source);
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	946 }
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	947 }
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	948
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	949 return false;
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	950 }
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	951
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	952 // Anything below that is considered to be zero
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	953 #define MIN_TIMER_GRANULARITY 0.0000001
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	954
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10291 diff changeset	955 void G1CollectorPolicy::record_collection_pause_end(double pause_time_ms, EvacuationInfo& evacuation_info) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	956 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	957 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	958 "otherwise, the subtraction below does not make sense");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	959 size_t rs_size =
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	960 _cur_collection_pause_used_regions_at_start - cset_region_length();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	961 size_t cur_used_bytes = _g1->used();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	962 assert(cur_used_bytes == _g1->recalculate_used(), "It should!");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	963 bool last_pause_included_initial_mark = false;
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	964 bool update_stats = !_g1->evacuation_failed();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	965
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	966 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	967 if (G1YoungSurvRateVerbose) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	968 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	969 _short_lived_surv_rate_group->print();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	970 // do that for any other surv rate groups too
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	971 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	972 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	973
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	974 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	975 if (last_pause_included_initial_mark) {
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	976 record_concurrent_mark_init_end(0.0);
11125 f4311079200c 8020155: PSR:PERF G1 not collecting old regions when humongous allocations interfer brutisso parents: 10405 diff changeset	977 } else if (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	978 // 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	979 // 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	980 // 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	981 set_initiate_conc_mark_if_possible();
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	982 }
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	983
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	984 _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	985 end_time_sec, false);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	986
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10291 diff changeset	987 evacuation_info.set_collectionset_used_before(_collection_set_bytes_used_before);
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10291 diff changeset	988 evacuation_info.set_bytes_copied(_bytes_copied_during_gc);
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10291 diff changeset	989
595 3698e8f47799 6804746: G1: guarantee(variance() > -1.0,"variance should be >= 0") (due to evacuation failure) tonyp parents: 547 diff changeset	990 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	991 _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	992 // this is where we update the allocation rate of the application
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	993 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	994 (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	995 if (app_time_ms < MIN_TIMER_GRANULARITY) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	996 // This usually happens due to the timer not having the required
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	997 // granularity. Some Linuxes are the usual culprits.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	998 // We'll just set it to something (arbitrarily) small.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	999 app_time_ms = 1.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1000 }
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	1001 // 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	1002 // 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	1003 // 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	1004 // 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	1005 // 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	1006 // 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	1007 // 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	1008 // 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	1009 uint regions_allocated = eden_cset_region_length();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1010 double alloc_rate_ms = (double) regions_allocated / app_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1011 _alloc_rate_ms_seq->add(alloc_rate_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1012
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1013 double interval_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1014 (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	1015 update_recent_gc_times(end_time_sec, pause_time_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1016 _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	1017 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	1018 (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	1019 #ifndef PRODUCT
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1020 // 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	1021 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	1022 gclog_or_tty->print_cr("-------------------------------------------");
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1023 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	1024 _recent_gc_times_ms->dump();
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1025 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	1026 _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	1027 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	1028 _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	1029 // 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	1030 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	1031 #endif // !PRODUCT
23b9a8d315fc 6902701: G1: protect debugging code related to 6898948 with a debug flag ysr parents: 1086 diff changeset	1032 // 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	1033 // 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	1034 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	1035 _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	1036 } else {
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1037 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	1038 _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	1039 }
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1040 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1041 }
10291 48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1042
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1043 bool new_in_marking_window = _in_marking_window;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1044 bool new_in_marking_window_im = false;
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1045 if (during_initial_mark_pause()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1046 new_in_marking_window = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1047 new_in_marking_window_im = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1048 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1049
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1050 if (_last_young_gc) {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1051 // 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	1052 // 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	1053
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	1054 if (!last_pause_included_initial_mark) {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1055 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	1056 "do not start mixed GCs")) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1057 set_gcs_are_young(false);
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1058 }
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	1059 } else {
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1060 ergo_verbose0(ErgoMixedGCs,
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1061 "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	1062 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	1063 }
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1064 _last_young_gc = false;
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1065 }
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1066
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1067 if (!_last_gc_was_young) {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1068 // 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	1069 // mixed GCs or not.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1070
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1071 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	1072 "do not continue mixed GCs")) {
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1073 set_gcs_are_young(true);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1074 }
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1075 }
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1076
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1077 _short_lived_surv_rate_group->start_adding_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1078 // do that for any other surv rate groupsx
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1079
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	1080 if (update_stats) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1081 double cost_per_card_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1082 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	1083 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	1084 _cost_per_card_ms_seq->add(cost_per_card_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1085 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1086
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1087 size_t cards_scanned = _g1->cards_scanned();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1088
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1089 double cost_per_entry_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1090 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	1091 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	1092 if (_last_gc_was_young) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1093 _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	1094 } else {
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1095 _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	1096 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1097 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1098
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1099 if (_max_rs_lengths > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1100 double cards_per_entry_ratio =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1101 (double) cards_scanned / (double) _max_rs_lengths;
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1102 if (_last_gc_was_young) {
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1103 _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	1104 } else {
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1105 _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	1106 }
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
4727 67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1109 // 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	1110 // 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	1111 // 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	1112 // 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	1113 // _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	1114 // 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	1115 // 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	1116 // _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	1117 // 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	1118 // 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	1119 // 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	1120 // 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	1121 // conditional below just in case.
4130 d23d2b18183e 7118202: G1: eden size unnecessarily drops to a minimum tonyp parents: 4097 diff changeset	1122 size_t rs_length_diff = 0;
d23d2b18183e 7118202: G1: eden size unnecessarily drops to a minimum tonyp parents: 4097 diff changeset	1123 if (_max_rs_lengths > _recorded_rs_lengths) {
d23d2b18183e 7118202: G1: eden size unnecessarily drops to a minimum tonyp parents: 4097 diff changeset	1124 rs_length_diff = _max_rs_lengths - _recorded_rs_lengths;
d23d2b18183e 7118202: G1: eden size unnecessarily drops to a minimum tonyp parents: 4097 diff changeset	1125 }
d23d2b18183e 7118202: G1: eden size unnecessarily drops to a minimum tonyp parents: 4097 diff changeset	1126 _rs_length_diff_seq->add((double) rs_length_diff);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1127
10291 48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1128 size_t freed_bytes = _heap_used_bytes_before_gc - cur_used_bytes;
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1129 size_t copied_bytes = _collection_set_bytes_used_before - freed_bytes;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1130 double cost_per_byte_ms = 0.0;
10291 48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1131
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1132 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	1133 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	1134 if (_in_marking_window) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1135 _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	1136 } else {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1137 _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	1138 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1139 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1140
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1141 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	1142 (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	1143 + 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	1144
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1145 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	1146 if (young_cset_region_length() > 0) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1147 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	1148 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	1149 phase_times()->young_free_cset_time_ms();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1150 _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	1151 (double) young_cset_region_length());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1152 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1153 double 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	1154 if (old_cset_region_length() > 0) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1155 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	1156 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	1157 phase_times()->non_young_free_cset_time_ms();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1158
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1159 _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	1160 (double) old_cset_region_length());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1161 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1162
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1163 double constant_other_time_ms = all_other_time_ms -
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1164 (young_other_time_ms + non_young_other_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1165 _constant_other_time_ms_seq->add(constant_other_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1166
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1167 double survival_ratio = 0.0;
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1168 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	1169 survival_ratio = (double) _bytes_copied_during_gc /
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1170 (double) _collection_set_bytes_used_before;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1171 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1172
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1173 _pending_cards_seq->add((double) _pending_cards);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1174 _rs_lengths_seq->add((double) _max_rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1175 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1176
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1177 _in_marking_window = new_in_marking_window;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1178 _in_marking_window_im = new_in_marking_window_im;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1179 _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	1180 update_young_list_target_length();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1181
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1182 // 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	1183 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	1184 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	1185 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	1186
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1187 _collectionSetChooser->verify();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1188 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1189
6059 3a22b77e755a 7161545: G1: Minor cleanups to the G1 logging brutisso parents: 6030 diff changeset	1190 #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	1191 #define EXT_SIZE_PARAMS(bytes) \
6059 3a22b77e755a 7161545: G1: Minor cleanups to the G1 logging brutisso parents: 6030 diff changeset	1192 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	1193 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	1194
10291 48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1195 void G1CollectorPolicy::record_heap_size_info_at_start(bool full) {
10098 71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1196 YoungList* young_list = _g1->young_list();
10291 48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1197 _eden_used_bytes_before_gc = young_list->eden_used_bytes();
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1198 _survivor_used_bytes_before_gc = young_list->survivor_used_bytes();
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1199 _heap_capacity_bytes_before_gc = _g1->capacity();
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1200 _heap_used_bytes_before_gc = _g1->used();
10098 71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1201 _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	1202
10291 48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1203 _eden_capacity_bytes_before_gc =
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1204 (_young_list_target_length * HeapRegion::GrainBytes) - _survivor_used_bytes_before_gc;
10098 71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1205
10291 48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1206 if (full) {
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1207 _metaspace_used_bytes_before_gc = MetaspaceAux::allocated_used_bytes();
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1208 }
10098 71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1209 }
71013d764f6e 8010780: G1: Eden occupancy/capacity output wrong after a full GC johnc parents: 8681 diff changeset	1210
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1211 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	1212 _g1->print_size_transition(gclog_or_tty,
10291 48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1213 _heap_used_bytes_before_gc,
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1214 _g1->used(),
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1215 _g1->capacity());
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	1216 }
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	1217
10291 48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1218 void G1CollectorPolicy::print_detailed_heap_transition(bool full) {
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1219 YoungList* young_list = _g1->young_list();
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1220
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1221 size_t eden_used_bytes_after_gc = young_list->eden_used_bytes();
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1222 size_t survivor_used_bytes_after_gc = young_list->survivor_used_bytes();
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1223 size_t heap_used_bytes_after_gc = _g1->used();
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1224
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1225 size_t heap_capacity_bytes_after_gc = _g1->capacity();
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1226 size_t eden_capacity_bytes_after_gc =
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1227 (_young_list_target_length * HeapRegion::GrainBytes) - survivor_used_bytes_after_gc;
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1228
10291 48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1229 gclog_or_tty->print(
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1230 " [Eden: "EXT_SIZE_FORMAT"("EXT_SIZE_FORMAT")->"EXT_SIZE_FORMAT"("EXT_SIZE_FORMAT") "
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1231 "Survivors: "EXT_SIZE_FORMAT"->"EXT_SIZE_FORMAT" "
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1232 "Heap: "EXT_SIZE_FORMAT"("EXT_SIZE_FORMAT")->"
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1233 EXT_SIZE_FORMAT"("EXT_SIZE_FORMAT")]",
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1234 EXT_SIZE_PARAMS(_eden_used_bytes_before_gc),
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1235 EXT_SIZE_PARAMS(_eden_capacity_bytes_before_gc),
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1236 EXT_SIZE_PARAMS(eden_used_bytes_after_gc),
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1237 EXT_SIZE_PARAMS(eden_capacity_bytes_after_gc),
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1238 EXT_SIZE_PARAMS(_survivor_used_bytes_before_gc),
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1239 EXT_SIZE_PARAMS(survivor_used_bytes_after_gc),
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1240 EXT_SIZE_PARAMS(_heap_used_bytes_before_gc),
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1241 EXT_SIZE_PARAMS(_heap_capacity_bytes_before_gc),
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1242 EXT_SIZE_PARAMS(heap_used_bytes_after_gc),
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1243 EXT_SIZE_PARAMS(heap_capacity_bytes_after_gc));
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1244
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1245 if (full) {
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1246 MetaspaceAux::print_metaspace_change(_metaspace_used_bytes_before_gc);
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1247 }
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1248
48391ab0687e 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info johnc parents: 10239 diff changeset	1249 gclog_or_tty->cr();
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1250 }
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1251
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1252 void G1CollectorPolicy::adjust_concurrent_refinement(double update_rs_time,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1253 double update_rs_processed_buffers,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1254 double goal_ms) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1255 DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1256 ConcurrentG1Refine *cg1r = G1CollectedHeap::heap()->concurrent_g1_refine();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1257
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	1258 if (G1UseAdaptiveConcRefinement) {
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1259 const int k_gy = 3, k_gr = 6;
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1260 const double inc_k = 1.1, dec_k = 0.9;
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1261
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1262 int g = cg1r->green_zone();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1263 if (update_rs_time > goal_ms) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1264 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	1265 } else {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1266 if (update_rs_time < goal_ms && update_rs_processed_buffers > g) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1267 g = (int)MAX2(g * inc_k, g + 1.0);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1268 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1269 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1270 // Change the refinement threads params
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1271 cg1r->set_green_zone(g);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1272 cg1r->set_yellow_zone(g * k_gy);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1273 cg1r->set_red_zone(g * k_gr);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1274 cg1r->reinitialize_threads();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1275
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1276 int processing_threshold_delta = MAX2((int)(cg1r->green_zone() * sigma()), 1);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1277 int processing_threshold = MIN2(cg1r->green_zone() + processing_threshold_delta,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1278 cg1r->yellow_zone());
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1279 // Change the barrier params
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1280 dcqs.set_process_completed_threshold(processing_threshold);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1281 dcqs.set_max_completed_queue(cg1r->red_zone());
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1282 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1283
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1284 int curr_queue_size = dcqs.completed_buffers_num();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1285 if (curr_queue_size >= cg1r->yellow_zone()) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1286 dcqs.set_completed_queue_padding(curr_queue_size);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1287 } else {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1288 dcqs.set_completed_queue_padding(0);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1289 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1290 dcqs.notify_if_necessary();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1291 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1292
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1293 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1294 G1CollectorPolicy::predict_base_elapsed_time_ms(size_t pending_cards,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1295 size_t scanned_cards) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1296 return
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1297 predict_rs_update_time_ms(pending_cards) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1298 predict_rs_scan_time_ms(scanned_cards) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1299 predict_constant_other_time_ms();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1300 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1301
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1302 double
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1303 G1CollectorPolicy::predict_base_elapsed_time_ms(size_t pending_cards) {
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1304 size_t rs_length = predict_rs_length_diff();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1305 size_t card_num;
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1306 if (gcs_are_young()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1307 card_num = predict_young_card_num(rs_length);
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1308 } else {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1309 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	1310 }
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1311 return predict_base_elapsed_time_ms(pending_cards, card_num);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1312 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1313
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1314 size_t G1CollectorPolicy::predict_bytes_to_copy(HeapRegion* hr) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1315 size_t bytes_to_copy;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1316 if (hr->is_marked())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1317 bytes_to_copy = hr->max_live_bytes();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1318 else {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1319 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	1320 int age = hr->age_in_surv_rate_group();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1321 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	1322 bytes_to_copy = (size_t) ((double) hr->used() * yg_surv_rate);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1323 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1324 return bytes_to_copy;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1325 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1326
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1327 double
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1328 G1CollectorPolicy::predict_region_elapsed_time_ms(HeapRegion* hr,
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1329 bool for_young_gc) {
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1330 size_t rs_length = hr->rem_set()->occupied();
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1331 size_t card_num;
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1332
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1333 // Predicting the number of cards is based on which type of GC
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1334 // we're predicting for.
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1335 if (for_young_gc) {
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1336 card_num = predict_young_card_num(rs_length);
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1337 } else {
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1338 card_num = predict_non_young_card_num(rs_length);
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1339 }
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1340 size_t bytes_to_copy = predict_bytes_to_copy(hr);
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1341
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1342 double region_elapsed_time_ms =
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1343 predict_rs_scan_time_ms(card_num) +
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1344 predict_object_copy_time_ms(bytes_to_copy);
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1345
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1346 // The prediction of the "other" time for this region is based
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1347 // upon the region type and NOT the GC type.
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1348 if (hr->is_young()) {
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1349 region_elapsed_time_ms += predict_young_other_time_ms(1);
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1350 } else {
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1351 region_elapsed_time_ms += predict_non_young_other_time_ms(1);
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1352 }
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1353 return region_elapsed_time_ms;
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1354 }
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1355
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1356 void
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1357 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	1358 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	1359 _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	1360 _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	1361 _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	1362 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1363
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1364 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	1365 _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	1366 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1367
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1368 void G1CollectorPolicy::update_recent_gc_times(double end_time_sec,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1369 double elapsed_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1370 _recent_gc_times_ms->add(elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1371 _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	1372 _prev_collection_pause_end_ms = end_time_sec * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1373 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1374
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1375 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	1376 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	1377 double threshold = _gc_overhead_perc;
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1378 if (recent_gc_overhead > threshold) {
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1379 // We will double the existing space, or take
20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1380 // G1ExpandByPercentOfAvailable % of the available expansion
20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1381 // space, whichever is smaller, bounded below by a minimum
20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1382 // expansion (unless that's all that's left.)
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1383 const size_t min_expand_bytes = 1*M;
2188 c33825b68624 6923430: G1: assert(res != 0,"This should have worked.") johnc parents: 2152 diff changeset	1384 size_t reserved_bytes = _g1->max_capacity();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1385 size_t committed_bytes = _g1->capacity();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1386 size_t uncommitted_bytes = reserved_bytes - committed_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1387 size_t expand_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1388 size_t expand_bytes_via_pct =
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1389 uncommitted_bytes * G1ExpandByPercentOfAvailable / 100;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1390 expand_bytes = MIN2(expand_bytes_via_pct, committed_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1391 expand_bytes = MAX2(expand_bytes, min_expand_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1392 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	1393
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1394 ergo_verbose5(ErgoHeapSizing,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1395 "attempt heap expansion",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1396 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	1397 "threshold after GC")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1398 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	1399 ergo_format_perc("threshold")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1400 ergo_format_byte("uncommitted")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1401 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	1402 recent_gc_overhead, threshold,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1403 uncommitted_bytes,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1404 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	1405
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1406 return expand_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1407 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1408 return 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1409 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1410 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1411
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1412 void G1CollectorPolicy::print_tracing_info() const {
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	1413 _trace_gen0_time_data.print();
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	1414 _trace_gen1_time_data.print();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1415 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1416
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1417 void G1CollectorPolicy::print_yg_surv_rate_info() const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1418 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1419 _short_lived_surv_rate_group->print_surv_rate_summary();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1420 // add this call for any other surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1421 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1422 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1423
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1424 uint G1CollectorPolicy::max_regions(int purpose) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1425 switch (purpose) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1426 case GCAllocForSurvived:
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1427 return _max_survivor_regions;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1428 case GCAllocForTenured:
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1429 return REGIONS_UNLIMITED;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1430 default:
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1431 ShouldNotReachHere();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1432 return REGIONS_UNLIMITED;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1433 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1434 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1435
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	1436 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	1437 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	1438 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	1439 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	1440 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	1441 // 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	1442 // 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	1443 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	1444 } else {
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	1445 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	1446 }
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	1447 _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	1448 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	1449 }
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	1450
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1451 // Calculates survivor space parameters.
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	1452 void G1CollectorPolicy::update_survivors_policy() {
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	1453 double max_survivor_regions_d =
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	1454 (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	1455 // 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	1456 // 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	1457 _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	1458
3868 ae73da50be4b 7081064: G1: remove develop params G1FixedSurvivorSpaceSize, G1FixedTenuringThreshold, and G1FixedEdenSize tonyp parents: 3867 diff changeset	1459 _tenuring_threshold = _survivors_age_table.compute_tenuring_threshold(
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1460 HeapRegion::GrainWords * _max_survivor_regions);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1461 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1462
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1463 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	1464 GCCause::Cause gc_cause) {
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1465 bool during_cycle = _g1->concurrent_mark()->cmThread()->during_cycle();
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1466 if (!during_cycle) {
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1467 ergo_verbose1(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1468 "request concurrent cycle initiation",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1469 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	1470 ergo_format_str("GC cause"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1471 GCCause::to_string(gc_cause));
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1472 set_initiate_conc_mark_if_possible();
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1473 return true;
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1474 } else {
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1475 ergo_verbose1(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1476 "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	1477 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	1478 ergo_format_str("GC cause"),
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1479 GCCause::to_string(gc_cause));
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1480 return false;
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1481 }
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1482 }
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1483
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1484 void
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1485 G1CollectorPolicy::decide_on_conc_mark_initiation() {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1486 // 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	1487 // initial-mark pause.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1488
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1489 // 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	1490 // 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	1491 // 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	1492 // initial-mark pause).
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1493 assert(!during_initial_mark_pause(), "pre-condition");
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1494
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1495 if (initiate_conc_mark_if_possible()) {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1496 // 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	1497 // 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	1498 // concurrent marking cycle. So we might initiate one.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1499
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1500 bool during_cycle = _g1->concurrent_mark()->cmThread()->during_cycle();
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1501 if (!during_cycle) {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1502 // 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	1503 // 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	1504 // initiate a new cycle.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1505
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1506 set_during_initial_mark_pause();
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1507 // We do not allow mixed GCs during marking.
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1508 if (!gcs_are_young()) {
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1509 set_gcs_are_young(true);
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1510 ergo_verbose0(ErgoMixedGCs,
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1511 "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	1512 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	1513 }
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1514
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1515 // 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	1516 // we've already acted on it.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1517 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	1518
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1519 ergo_verbose0(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1520 "initiate concurrent cycle",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1521 ergo_format_reason("concurrent cycle initiation requested"));
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1522 } else {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1523 // The concurrent marking thread is still finishing up the
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1524 // 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	1525 // overlap. In particular, the concurrent marking thread might
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1526 // 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	1527 // 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	1528 // 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	1529 // 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	1530 // 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	1531 // periodically yields while clearing the next marking bitmap
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1532 // 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	1533 // 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	1534 // 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	1535 ergo_verbose0(ErgoConcCycles,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1536 "do not initiate concurrent cycle",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1537 ergo_format_reason("concurrent cycle already in progress"));
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1538 }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1539 }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1540 }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1541
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1542 class KnownGarbageClosure: public HeapRegionClosure {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1543 G1CollectedHeap* _g1h;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1544 CollectionSetChooser* _hrSorted;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1545
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1546 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1547 KnownGarbageClosure(CollectionSetChooser* hrSorted) :
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1548 _g1h(G1CollectedHeap::heap()), _hrSorted(hrSorted) { }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1549
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1550 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1551 // We only include humongous regions in collection
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1552 // sets when concurrent mark shows that their contained object is
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1553 // unreachable.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1554
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1555 // Do we have any marking information for this region?
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1556 if (r->is_marked()) {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1557 // 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	1558 // 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	1559 // before we fill them up).
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1560 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	1561 _hrSorted->add_region(r);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1562 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1563 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1564 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1565 }
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 class ParKnownGarbageHRClosure: public HeapRegionClosure {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1569 G1CollectedHeap* _g1h;
6254 a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6219 diff changeset	1570 CSetChooserParUpdater _cset_updater;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1571
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1572 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1573 ParKnownGarbageHRClosure(CollectionSetChooser* hrSorted,
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1574 uint chunk_size) :
6254 a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6219 diff changeset	1575 _g1h(G1CollectedHeap::heap()),
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6219 diff changeset	1576 _cset_updater(hrSorted, true /* parallel */, chunk_size) { }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1577
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1578 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1579 // Do we have any marking information for this region?
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1580 if (r->is_marked()) {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1581 // 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	1582 // 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	1583 // before we fill them up).
6254 a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6219 diff changeset	1584 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	1585 _cset_updater.add_region(r);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1586 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1587 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1588 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1589 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1590 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1591
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1592 class ParKnownGarbageTask: public AbstractGangTask {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1593 CollectionSetChooser* _hrSorted;
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1594 uint _chunk_size;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1595 G1CollectedHeap* _g1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1596 public:
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1597 ParKnownGarbageTask(CollectionSetChooser* hrSorted, uint chunk_size) :
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1598 AbstractGangTask("ParKnownGarbageTask"),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1599 _hrSorted(hrSorted), _chunk_size(chunk_size),
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1600 _g1(G1CollectedHeap::heap()) { }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1601
4728 441e946dc1af 7121618: Change type of number of GC workers to unsigned int. jmasa parents: 4727 diff changeset	1602 void work(uint worker_id) {
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1603 ParKnownGarbageHRClosure parKnownGarbageCl(_hrSorted, _chunk_size);
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1604
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1605 // 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	1606 _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	1607 _g1->workers()->active_workers(),
355 0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	1608 HeapRegion::InitialClaimValue);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1609 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1610 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1611
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1612 void
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1613 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	1614 _collectionSetChooser->clear();
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	1615
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1616 uint region_num = _g1->n_regions();
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1617 if (G1CollectedHeap::use_parallel_gc_threads()) {
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1618 const uint OverpartitionFactor = 4;
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1619 uint WorkUnit;
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1620 // The use of MinChunkSize = 8 in the original code
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1621 // causes some assertion failures when the total number of
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1622 // 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	1623 // Should the original code also be fixed?
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1624 if (no_of_gc_threads > 0) {
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1625 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	1626 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	1627 MinWorkUnit);
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1628 } else {
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1629 assert(no_of_gc_threads > 0,
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1630 "The active gc workers should be greater than 0");
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1631 // 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	1632 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	1633 WorkUnit =
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1634 MAX2(region_num / (uint) (ParallelGCThreads * OverpartitionFactor),
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1635 MinWorkUnit);
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1636 }
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1637 _collectionSetChooser->prepare_for_par_region_addition(_g1->n_regions(),
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1638 WorkUnit);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1639 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	1640 (int) WorkUnit);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1641 _g1->workers()->run_task(&parKnownGarbageTask);
355 0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	1642
0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	1643 assert(_g1->check_heap_region_claim_values(HeapRegion::InitialClaimValue),
0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	1644 "sanity check");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1645 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1646 KnownGarbageClosure knownGarbagecl(_collectionSetChooser);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1647 _g1->heap_region_iterate(&knownGarbagecl);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1648 }
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	1649
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1650 _collectionSetChooser->sort_regions();
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1651
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	1652 double end_sec = os::elapsedTime();
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	1653 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	1654 _concurrent_mark_cleanup_times_ms->add(elapsed_time_ms);
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	1655 _cur_mark_stop_world_time_ms += elapsed_time_ms;
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	1656 _prev_collection_pause_end_ms += elapsed_time_ms;
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3986 diff changeset	1657 _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	1658 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1659
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1660 // 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	1661 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	1662 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	1663 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	1664
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1665 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	1666 hr->set_in_collection_set(true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1667 hr->set_next_in_collection_set(_collection_set);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1668 _collection_set = hr;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1669 _collection_set_bytes_used_before += hr->used();
526 818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 470 diff changeset	1670 _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	1671 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	1672 _recorded_rs_lengths += rs_length;
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	1673 _old_cset_region_length += 1;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1674 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1675
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1676 // 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	1677 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	1678 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	1679
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1680 _inc_cset_head = NULL;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1681 _inc_cset_tail = NULL;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1682 _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	1683
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1684 _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	1685 _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	1686 _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	1687 _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	1688 _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	1689 _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	1690 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1691
4727 67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1692 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	1693 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	1694 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	1695
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1696 // 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	1697 // _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	1698 // 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	1699 // 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	1700 // 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	1701 // the "main" fields.
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1702
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1703 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	1704 _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	1705 } else {
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1706 // 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	1707 // 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	1708 // 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	1709 // 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	1710 // 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	1711 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	1712 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	1713 _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	1714 } else {
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1715 _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	1716 }
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1717 }
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1718 _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	1719 _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	1720
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1721 _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	1722 _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	1723 }
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1724
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1725 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	1726 // 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	1727 // * 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	1728 // evacuation pause,
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1729 // * 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	1730 // 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	1731 // * 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	1732 // 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	1733 // 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	1734 // 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	1735 // 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	1736 // refine thread (RSet sampling).
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1737
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1738 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	1739 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	1740 _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	1741 _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	1742 _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	1743
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1744 // 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	1745 // 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	1746 // 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	1747 // rset sampling code
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1748 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	1749 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	1750 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1751
4727 67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1752 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	1753 size_t new_rs_length) {
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1754 // 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	1755 assert(hr->is_young(), "Precondition");
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1756 assert(!SafepointSynchronize::is_at_safepoint(),
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1757 "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	1758
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1759 // 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	1760 // _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	1761 // 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	1762 // 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	1763 // 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	1764 // 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	1765 // 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	1766 // 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	1767
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1768 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	1769 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	1770 _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	1771
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1772 double old_elapsed_time_ms = hr->predicted_elapsed_time_ms();
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1773 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	1774 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	1775 _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	1776
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	1777 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	1778 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	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 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	1782 assert(hr->is_young(), "invariant");
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4072 diff changeset	1783 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	1784 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	1785
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1786 // 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	1787 // 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	1788 // 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	1789 // 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	1790 // 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	1791 // 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	1792
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1793 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	1794 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	1795
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1796 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	1797 _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	1798
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1799 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	1800 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	1801 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	1802
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1803 _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	1804 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1805
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1806 // 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	1807 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	1808 // 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	1809 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	1810
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1811 // Do the 'common' stuff
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1812 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	1813
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1814 // 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	1815 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	1816 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	1817 _inc_cset_head = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1818 } else {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1819 _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	1820 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1821 _inc_cset_tail = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1822 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1823
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1824 // 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	1825 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	1826 // 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	1827 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	1828
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1829 // Do the 'common' stuff
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1830 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	1831
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1832 // 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	1833 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	1834 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	1835 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	1836 _inc_cset_tail = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1837 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1838 _inc_cset_head = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1839 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1840
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1841 #ifndef PRODUCT
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1842 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	1843 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	1844
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1845 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	1846 HeapRegion* csr = list_head;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1847 while (csr != NULL) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1848 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	1849 assert(csr->in_collection_set(), "bad CS");
6027 8a2e5a6a19a4 7143490: G1: Remove HeapRegion::_top_at_conc_mark_count johnc parents: 6011 diff changeset	1850 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	1851 HR_FORMAT_PARAMS(csr),
8a2e5a6a19a4 7143490: G1: Remove HeapRegion::_top_at_conc_mark_count johnc parents: 6011 diff changeset	1852 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	1853 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	1854 csr = next;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1855 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1856 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1857 #endif // !PRODUCT
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1858
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1859 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	1860 // 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	1861 // 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	1862 // percentage of the current heap capacity.
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1863 size_t capacity_bytes = _g1->capacity();
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1864 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	1865 }
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1866
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1867 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	1868 const char* false_action_str) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1869 CollectionSetChooser* cset_chooser = _collectionSetChooser;
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1870 if (cset_chooser->is_empty()) {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1871 ergo_verbose0(ErgoMixedGCs,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1872 false_action_str,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1873 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	1874 return false;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1875 }
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1876
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1877 // Is the amount of uncollected reclaimable space above G1HeapWastePercent?
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1878 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	1879 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	1880 double threshold = (double) G1HeapWastePercent;
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1881 if (reclaimable_perc <= threshold) {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1882 ergo_verbose4(ErgoMixedGCs,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1883 false_action_str,
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1884 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	1885 ergo_format_region("candidate old regions")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1886 ergo_format_byte_perc("reclaimable")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1887 ergo_format_perc("threshold"),
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1888 cset_chooser->remaining_regions(),
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1889 reclaimable_bytes,
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1890 reclaimable_perc, threshold);
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1891 return false;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1892 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1893
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1894 ergo_verbose4(ErgoMixedGCs,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1895 true_action_str,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1896 ergo_format_reason("candidate old regions available")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1897 ergo_format_region("candidate old regions")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1898 ergo_format_byte_perc("reclaimable")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1899 ergo_format_perc("threshold"),
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	1900 cset_chooser->remaining_regions(),
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1901 reclaimable_bytes,
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1902 reclaimable_perc, threshold);
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1903 return true;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1904 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	1905
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1906 uint G1CollectorPolicy::calc_min_old_cset_length() {
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1907 // 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	1908 // 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	1909 // 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	1910 // 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	1911 // maximum desired number of mixed GCs.
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1912 //
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1913 // 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	1914 // 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	1915 // 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	1916
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1917 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	1918 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	1919 size_t result = region_num / gc_num;
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1920 // emulate ceiling
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1921 if (result * gc_num < region_num) {
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1922 result += 1;
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1923 }
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1924 return (uint) result;
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1925 }
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1926
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1927 uint G1CollectorPolicy::calc_max_old_cset_length() {
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1928 // 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	1929 // 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	1930 // 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	1931 // of them are available.
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1932
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1933 G1CollectedHeap* g1h = G1CollectedHeap::heap();
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1934 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	1935 const size_t perc = (size_t) G1OldCSetRegionThresholdPercent;
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1936 size_t result = region_num * perc / 100;
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1937 // emulate ceiling
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1938 if (100 * result < region_num * perc) {
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1939 result += 1;
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1940 }
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1941 return (uint) result;
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1942 }
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1943
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	1944
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10291 diff changeset	1945 void G1CollectorPolicy::finalize_cset(double target_pause_time_ms, EvacuationInfo& evacuation_info) {
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1946 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	1947
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1948 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	1949 finalize_incremental_cset_building();
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1950
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1951 guarantee(target_pause_time_ms > 0.0,
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1952 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	1953 target_pause_time_ms));
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1954 guarantee(_collection_set == NULL, "Precondition");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1955
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1956 double base_time_ms = predict_base_elapsed_time_ms(_pending_cards);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1957 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	1958 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	1959
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1960 ergo_verbose4(ErgoCSetConstruction \| ErgoHigh,
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1961 "start choosing CSet",
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1962 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	1963 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	1964 ergo_format_ms("remaining time")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1965 ergo_format_ms("target pause time"),
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1966 _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	1967
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1968 _last_gc_was_young = gcs_are_young() ? true : false;
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1969
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	1970 if (_last_gc_was_young) {
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	1971 _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	1972 } else {
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	1973 _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	1974 }
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1975
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1976 // 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	1977 // 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	1978 // [Newly Young Regions ++ Survivors from last pause].
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1979
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	1980 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	1981 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	1982 init_cset_region_lengths(eden_region_length, survivor_region_length);
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1983
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	1984 HeapRegion* hr = young_list->first_survivor_region();
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1985 while (hr != NULL) {
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1986 assert(hr->is_survivor(), "badly formed young list");
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1987 hr->set_young();
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1988 hr = hr->get_next_young_region();
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1989 }
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1990
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1991 // 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	1992 young_list->clear_survivors();
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1993
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1994 _collection_set = _inc_cset_head;
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1995 _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	1996 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	1997 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	1998
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1999 ergo_verbose3(ErgoCSetConstruction \| ErgoHigh,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2000 "add young regions to CSet",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2001 ergo_format_region("eden")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2002 ergo_format_region("survivors")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2003 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	2004 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	2005 _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	2006
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2007 // The number of recorded young regions is the incremental
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2008 // collection set's current size
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2009 set_recorded_rs_lengths(_inc_cset_recorded_rs_lengths);
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2010
ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	2011 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	2012 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	2013
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	2014 // Set the start of the non-young choice time.
7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	2015 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	2016
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4130 diff changeset	2017 if (!gcs_are_young()) {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2018 CollectionSetChooser* cset_chooser = _collectionSetChooser;
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	2019 cset_chooser->verify();
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2020 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	2021 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	2022
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6007 diff changeset	2023 uint expensive_region_num = 0;
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2024 bool check_time_remaining = adaptive_young_list_length();
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	2025
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2026 HeapRegion* hr = cset_chooser->peek();
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2027 while (hr != NULL) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2028 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	2029 // 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	2030 ergo_verbose2(ErgoCSetConstruction,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2031 "finish adding old regions to CSet",
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2032 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	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("max"),
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2035 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	2036 break;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2037 }
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2038
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2039
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2040 // 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	2041 // not above G1HeapWastePercent.
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2042 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	2043 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	2044 double threshold = (double) G1HeapWastePercent;
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2045 if (reclaimable_perc <= threshold) {
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2046 // 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	2047 // 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	2048 // adding old regions to the CSet.
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2049 ergo_verbose5(ErgoCSetConstruction,
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2050 "finish adding old regions to CSet",
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2051 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	2052 ergo_format_region("old")
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2053 ergo_format_region("max")
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2054 ergo_format_byte_perc("reclaimable")
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2055 ergo_format_perc("threshold"),
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2056 old_cset_region_length(),
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2057 max_old_cset_length,
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2058 reclaimable_bytes,
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2059 reclaimable_perc, threshold);
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2060 break;
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2061 }
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 8094 diff changeset	2062
6611 7383557659bd 7185699: G1: Prediction model discrepancies johnc parents: 6254 diff changeset	2063 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	2064 if (check_time_remaining) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2065 if (predicted_time_ms > time_remaining_ms) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2066 // Too expensive for the current CSet.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2067
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2068 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	2069 // 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	2070 // we are done with this CSet.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2071 ergo_verbose4(ErgoCSetConstruction,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2072 "finish adding old regions to CSet",
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2073 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	2074 ergo_format_ms("predicted time")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2075 ergo_format_ms("remaining time")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2076 ergo_format_region("old")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2077 ergo_format_region("min"),
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2078 predicted_time_ms, time_remaining_ms,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2079 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	2080 break;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2081 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2082
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2083 // 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	2084 // minimum number of old regions.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2085 expensive_region_num += 1;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2086 }
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2087 } else {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2088 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	2089 // 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	2090 // 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	2091 ergo_verbose2(ErgoCSetConstruction,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2092 "finish adding old regions to CSet",
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2093 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	2094 ergo_format_region("old")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2095 ergo_format_region("min"),
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2096 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	2097 break;
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2098 }
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2099 }
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2100
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2101 // 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	2102 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	2103 predicted_pause_time_ms += predicted_time_ms;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2104 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	2105 _g1->old_set_remove(hr);
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2106 add_old_region_to_cset(hr);
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2107
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2108 hr = cset_chooser->peek();
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2109 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2110 if (hr == NULL) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2111 ergo_verbose0(ErgoCSetConstruction,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2112 "finish adding old regions to CSet",
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2113 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	2114 }
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2115
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2116 if (expensive_region_num > 0) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2117 // 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	2118 // 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	2119 // avoid generating output per region.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2120 ergo_verbose4(ErgoCSetConstruction,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2121 "added expensive regions to CSet",
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2122 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	2123 ergo_format_region("old")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2124 ergo_format_region("expensive")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2125 ergo_format_region("min")
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2126 ergo_format_ms("remaining time"),
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2127 old_cset_region_length(),
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2128 expensive_region_num,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2129 min_old_cset_length,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2130 time_remaining_ms);
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2131 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4837 diff changeset	2132
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	2133 cset_chooser->verify();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2134 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2135
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2136 stop_incremental_cset_building();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2137
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2138 ergo_verbose5(ErgoCSetConstruction,
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2139 "finish choosing CSet",
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2140 ergo_format_region("eden")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2141 ergo_format_region("survivors")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2142 ergo_format_region("old")
20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2143 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	2144 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	2145 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	2146 old_cset_region_length(),
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	2147 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	2148
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2149 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	2150 phase_times()->record_non_young_cset_choice_time_ms((non_young_end_time_sec - non_young_start_time_sec) * 1000.0);
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10291 diff changeset	2151 evacuation_info.set_collectionset_regions(cset_region_length());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2152 }
6109 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::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	2155 if(TraceGen0Time) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2156 _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	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
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2160 void TraceGen0TimeData::record_yield_time(double yield_time_ms) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2161 if(TraceGen0Time) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2162 _all_yield_times_ms.add(yield_time_ms);
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2163 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2164 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2165
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2166 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	2167 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	2168 _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	2169 _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	2170 _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	2171 _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	2172 _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	2173 _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	2174 _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	2175 _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	2176 _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	2177 _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	2178
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	2179 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	2180 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	2181 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	2182 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	2183 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	2184 + 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	2185
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	2186 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	2187 _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	2188 _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	2189 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2190 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2191
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2192 void TraceGen0TimeData::increment_young_collection_count() {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2193 if(TraceGen0Time) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2194 ++_young_pause_num;
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2195 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2196 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2197
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2198 void TraceGen0TimeData::increment_mixed_collection_count() {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2199 if(TraceGen0Time) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2200 ++_mixed_pause_num;
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2201 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2202 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2203
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2204 void TraceGen0TimeData::print_summary(const char* str,
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2205 const NumberSeq* seq) const {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2206 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	2207 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	2208 str, sum / 1000.0, seq->avg());
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2209 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2210
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2211 void TraceGen0TimeData::print_summary_sd(const char* str,
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2212 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	2213 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	2214 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	2215 "(num", seq->num(), seq->sd(), seq->maximum());
6109 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 TraceGen0TimeData::print() const {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2219 if (!TraceGen0Time) {
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 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	2224 print_summary_sd(" Total", &_total);
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2225 gclog_or_tty->print_cr("");
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2226 gclog_or_tty->print_cr("");
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2227 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	2228 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	2229 gclog_or_tty->print_cr("");
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2230
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2231 gclog_or_tty->print_cr("EVACUATION PAUSES");
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2232
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2233 if (_young_pause_num == 0 && _mixed_pause_num == 0) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2234 gclog_or_tty->print_cr("none");
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2235 } else {
6219 922993931b3d 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause brutisso parents: 6109 diff changeset	2236 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	2237 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	2238 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	2239 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	2240 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	2241 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	2242 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	2243 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	2244 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	2245 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	2246 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	2247 print_summary(" Other", &_other);
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2248 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2249 gclog_or_tty->print_cr("");
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2250
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2251 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	2252 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	2253 print_summary_sd(" Yields", &_all_yield_times_ms);
6109 bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2254 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2255
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2256 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	2257 if (TraceGen1Time) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2258 _all_full_gc_times.add(full_gc_time_ms);
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2259 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2260 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2261
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2262 void TraceGen1TimeData::print() const {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2263 if (!TraceGen1Time) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2264 return;
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2265 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2266
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2267 if (_all_full_gc_times.num() > 0) {
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2268 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	2269 _all_full_gc_times.num(),
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2270 _all_full_gc_times.sum() / 1000.0);
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2271 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	2272 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	2273 _all_full_gc_times.sd(),
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2274 _all_full_gc_times.maximum());
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2275 }
bbc900c2482a 7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering brutisso parents: 6064 diff changeset	2276 }

Mercurial > hg > graal-compiler

annotate src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp @ 17833:bfdf528be8e8