Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp @ 20795:ae52ee069062
8062063: Usage of UseHugeTLBFS, UseLargePagesInMetaspace and huge SurvivorAlignmentInBytes cause crashes in CMBitMapClosure::do_bit
Summary: Making sure committed memory is cleared when re-committed, even if using large pages.
Reviewed-by: jwilhelm, tschatzl
author | sjohanss |
---|---|
date | Mon, 12 Jan 2015 15:24:29 +0100 |
parents | b840813adfcc |
children | 7848fc12602b |
rev | line source |
---|---|
342 | 1 /* |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17866
diff
changeset
|
2 * Copyright (c) 2001, 2014, Oracle and/or its affiliates. All rights reserved. |
342 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
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 | 22 * |
23 */ | |
24 | |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17866
diff
changeset
|
25 #ifndef __clang_major__ |
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17866
diff
changeset
|
26 #define ATTRIBUTE_PRINTF(x,y) // FIXME, formats are a mess. |
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17866
diff
changeset
|
27 #endif |
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17866
diff
changeset
|
28 |
1972 | 29 #include "precompiled.hpp" |
30 #include "gc_implementation/g1/concurrentG1Refine.hpp" | |
31 #include "gc_implementation/g1/concurrentMark.hpp" | |
32 #include "gc_implementation/g1/concurrentMarkThread.inline.hpp" | |
33 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" | |
34 #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
|
35 #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
|
36 #include "gc_implementation/g1/g1GCPhaseTimes.hpp" |
6007
5c86f8211d1e
7160728: Introduce an extra logging level for G1 logging
brutisso
parents:
5988
diff
changeset
|
37 #include "gc_implementation/g1/g1Log.hpp" |
1972 | 38 #include "gc_implementation/g1/heapRegionRemSet.hpp" |
39 #include "gc_implementation/shared/gcPolicyCounters.hpp" | |
40 #include "runtime/arguments.hpp" | |
41 #include "runtime/java.hpp" | |
42 #include "runtime/mutexLocker.hpp" | |
43 #include "utilities/debug.hpp" | |
342 | 44 |
45 // Different defaults for different number of GC threads | |
46 // They were chosen by running GCOld and SPECjbb on debris with different | |
47 // numbers of GC threads and choosing them based on the results | |
48 | |
49 // all the same | |
50 static double rs_length_diff_defaults[] = { | |
51 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 | |
52 }; | |
53 | |
54 static double cost_per_card_ms_defaults[] = { | |
55 0.01, 0.005, 0.005, 0.003, 0.003, 0.002, 0.002, 0.0015 | |
56 }; | |
57 | |
58 // all the same | |
4710 | 59 static double young_cards_per_entry_ratio_defaults[] = { |
342 | 60 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0 |
61 }; | |
62 | |
63 static double cost_per_entry_ms_defaults[] = { | |
64 0.015, 0.01, 0.01, 0.008, 0.008, 0.0055, 0.0055, 0.005 | |
65 }; | |
66 | |
67 static double cost_per_byte_ms_defaults[] = { | |
68 0.00006, 0.00003, 0.00003, 0.000015, 0.000015, 0.00001, 0.00001, 0.000009 | |
69 }; | |
70 | |
71 // these should be pretty consistent | |
72 static double constant_other_time_ms_defaults[] = { | |
73 5.0, 5.0, 5.0, 5.0, 5.0, 5.0, 5.0, 5.0 | |
74 }; | |
75 | |
76 | |
77 static double young_other_cost_per_region_ms_defaults[] = { | |
78 0.3, 0.2, 0.2, 0.15, 0.15, 0.12, 0.12, 0.1 | |
79 }; | |
80 | |
81 static double non_young_other_cost_per_region_ms_defaults[] = { | |
82 1.0, 0.7, 0.7, 0.5, 0.5, 0.42, 0.42, 0.30 | |
83 }; | |
84 | |
85 G1CollectorPolicy::G1CollectorPolicy() : | |
1833
8b10f48633dc
6984287: Regularize how GC parallel workers are specified.
jmasa
parents:
1779
diff
changeset
|
86 _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
|
87 ? ParallelGCThreads : 1), |
1833
8b10f48633dc
6984287: Regularize how GC parallel workers are specified.
jmasa
parents:
1779
diff
changeset
|
88 |
342 | 89 _recent_gc_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)), |
90 _stop_world_start(0.0), | |
91 | |
92 _concurrent_mark_remark_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)), | |
93 _concurrent_mark_cleanup_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)), | |
94 | |
95 _alloc_rate_ms_seq(new TruncatedSeq(TruncatedSeqLength)), | |
96 _prev_collection_pause_end_ms(0.0), | |
97 _rs_length_diff_seq(new TruncatedSeq(TruncatedSeqLength)), | |
98 _cost_per_card_ms_seq(new TruncatedSeq(TruncatedSeqLength)), | |
4710 | 99 _young_cards_per_entry_ratio_seq(new TruncatedSeq(TruncatedSeqLength)), |
100 _mixed_cards_per_entry_ratio_seq(new TruncatedSeq(TruncatedSeqLength)), | |
342 | 101 _cost_per_entry_ms_seq(new TruncatedSeq(TruncatedSeqLength)), |
4710 | 102 _mixed_cost_per_entry_ms_seq(new TruncatedSeq(TruncatedSeqLength)), |
342 | 103 _cost_per_byte_ms_seq(new TruncatedSeq(TruncatedSeqLength)), |
104 _cost_per_byte_ms_during_cm_seq(new TruncatedSeq(TruncatedSeqLength)), | |
105 _constant_other_time_ms_seq(new TruncatedSeq(TruncatedSeqLength)), | |
106 _young_other_cost_per_region_ms_seq(new TruncatedSeq(TruncatedSeqLength)), | |
107 _non_young_other_cost_per_region_ms_seq( | |
108 new TruncatedSeq(TruncatedSeqLength)), | |
109 | |
110 _pending_cards_seq(new TruncatedSeq(TruncatedSeqLength)), | |
111 _rs_lengths_seq(new TruncatedSeq(TruncatedSeqLength)), | |
112 | |
751 | 113 _pause_time_target_ms((double) MaxGCPauseMillis), |
342 | 114 |
4710 | 115 _gcs_are_young(true), |
342 | 116 |
117 _during_marking(false), | |
118 _in_marking_window(false), | |
119 _in_marking_window_im(false), | |
120 | |
4710 | 121 _recent_prev_end_times_for_all_gcs_sec( |
122 new TruncatedSeq(NumPrevPausesForHeuristics)), | |
342 | 123 |
124 _recent_avg_pause_time_ratio(0.0), | |
125 | |
1359
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
126 _initiate_conc_mark_if_possible(false), |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
127 _during_initial_mark_pause(false), |
4710 | 128 _last_young_gc(false), |
129 _last_gc_was_young(false), | |
342 | 130 |
10291
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_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
|
132 _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
|
133 _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
|
134 _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
|
135 _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
|
136 _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
|
137 |
4090
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
138 _eden_cset_region_length(0), |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
139 _survivor_cset_region_length(0), |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
140 _old_cset_region_length(0), |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
141 |
342 | 142 _collection_set(NULL), |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
143 _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
|
144 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
145 // Incremental CSet attributes |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
146 _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
|
147 _inc_cset_head(NULL), |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
148 _inc_cset_tail(NULL), |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
149 _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
|
150 _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
|
151 _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
|
152 _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
|
153 _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
|
154 _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
|
155 |
342 | 156 #ifdef _MSC_VER // the use of 'this' below gets a warning, make it go away |
157 #pragma warning( disable:4355 ) // 'this' : used in base member initializer list | |
158 #endif // _MSC_VER | |
159 | |
160 _short_lived_surv_rate_group(new SurvRateGroup(this, "Short Lived", | |
161 G1YoungSurvRateNumRegionsSummary)), | |
162 _survivor_surv_rate_group(new SurvRateGroup(this, "Survivor", | |
545 | 163 G1YoungSurvRateNumRegionsSummary)), |
342 | 164 // add here any more surv rate groups |
545 | 165 _recorded_survivor_regions(0), |
166 _recorded_survivor_head(NULL), | |
167 _recorded_survivor_tail(NULL), | |
1356 | 168 _survivors_age_table(true), |
169 | |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
170 _gc_overhead_perc(0.0) { |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
171 |
942
2c79770d1f6e
6819085: G1: use larger and/or user settable region size
tonyp
parents:
936
diff
changeset
|
172 // 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
|
173 // 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
|
174 // 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
|
175 |
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 // 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
|
177 // 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
|
178 // 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
|
179 // 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
|
180 // 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
|
181 // 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
|
182 // 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
|
183 HeapRegion::setup_heap_region_size(InitialHeapSize, MaxHeapSize); |
1261
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1111
diff
changeset
|
184 HeapRegionRemSet::setup_remset_size(); |
942
2c79770d1f6e
6819085: G1: use larger and/or user settable region size
tonyp
parents:
936
diff
changeset
|
185 |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
186 G1ErgoVerbose::initialize(); |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
187 if (PrintAdaptiveSizePolicy) { |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
188 // 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
|
189 G1ErgoVerbose::set_enabled(true); |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
190 // 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
|
191 // 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
|
192 // changed in the future. |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
193 G1ErgoVerbose::set_level(ErgoHigh); |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
194 } else { |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
195 G1ErgoVerbose::set_enabled(false); |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
196 } |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
197 |
1391
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1388
diff
changeset
|
198 // Verify PLAB sizes |
3986
65a8ff39a6da
7095194: G1: HeapRegion::GrainBytes, GrainWords, and CardsPerRegion should be size_t
johnc
parents:
3982
diff
changeset
|
199 const size_t region_size = HeapRegion::GrainWords; |
1391
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1388
diff
changeset
|
200 if (YoungPLABSize > region_size || OldPLABSize > region_size) { |
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1388
diff
changeset
|
201 char buffer[128]; |
3986
65a8ff39a6da
7095194: G1: HeapRegion::GrainBytes, GrainWords, and CardsPerRegion should be size_t
johnc
parents:
3982
diff
changeset
|
202 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
|
203 OldPLABSize > region_size ? "Old" : "Young", region_size); |
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1388
diff
changeset
|
204 vm_exit_during_initialization(buffer); |
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1388
diff
changeset
|
205 } |
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1388
diff
changeset
|
206 |
342 | 207 _recent_prev_end_times_for_all_gcs_sec->add(os::elapsedTime()); |
208 _prev_collection_pause_end_ms = os::elapsedTime() * 1000.0; | |
209 | |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
210 _phase_times = new G1GCPhaseTimes(_parallel_gc_threads); |
342 | 211 |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
212 int index = MIN2(_parallel_gc_threads - 1, 7); |
342 | 213 |
214 _rs_length_diff_seq->add(rs_length_diff_defaults[index]); | |
215 _cost_per_card_ms_seq->add(cost_per_card_ms_defaults[index]); | |
4710 | 216 _young_cards_per_entry_ratio_seq->add( |
217 young_cards_per_entry_ratio_defaults[index]); | |
342 | 218 _cost_per_entry_ms_seq->add(cost_per_entry_ms_defaults[index]); |
219 _cost_per_byte_ms_seq->add(cost_per_byte_ms_defaults[index]); | |
220 _constant_other_time_ms_seq->add(constant_other_time_ms_defaults[index]); | |
221 _young_other_cost_per_region_ms_seq->add( | |
222 young_other_cost_per_region_ms_defaults[index]); | |
223 _non_young_other_cost_per_region_ms_seq->add( | |
224 non_young_other_cost_per_region_ms_defaults[index]); | |
225 | |
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
|
226 // 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
|
227 // 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
|
228 // 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
|
229 // 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
|
230 // 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
|
231 // 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
|
232 // 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
|
233 // 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
|
234 // 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
|
235 |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
236 // 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
|
237 // 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
|
238 if (!FLAG_IS_DEFAULT(MaxGCPauseMillis)) { |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
239 if (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
|
240 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
|
241 "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
|
242 } |
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 } |
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 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
|
245 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
|
246 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
|
247 "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
|
248 } |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
249 } |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
250 |
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 // 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
|
252 // the default value. |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
253 if (FLAG_IS_DEFAULT(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
|
254 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
|
255 // 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
|
256 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
|
257 } 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
|
258 // 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
|
259 // 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
|
260 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
|
261 "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
|
262 } |
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 } |
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 |
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 // 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
|
266 // 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
|
267 // 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
|
268 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
|
269 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
|
270 } |
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 |
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 // 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
|
273 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
|
274 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
|
275 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
|
276 "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
|
277 "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
|
278 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
|
279 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
|
280 } |
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
|
281 |
751 | 282 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
|
283 double time_slice = (double) GCPauseIntervalMillis / 1000.0; |
342 | 284 _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
|
285 |
f1fb03a251e9
8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED
poonam
parents:
7449
diff
changeset
|
286 uintx confidence_perc = G1ConfidencePercent; |
f1fb03a251e9
8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED
poonam
parents:
7449
diff
changeset
|
287 // 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
|
288 if (confidence_perc > 100) { |
f1fb03a251e9
8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED
poonam
parents:
7449
diff
changeset
|
289 confidence_perc = 100; |
f1fb03a251e9
8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED
poonam
parents:
7449
diff
changeset
|
290 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
|
291 "it's been updated to %u", confidence_perc); |
f1fb03a251e9
8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED
poonam
parents:
7449
diff
changeset
|
292 } |
f1fb03a251e9
8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED
poonam
parents:
7449
diff
changeset
|
293 _sigma = (double) confidence_perc / 100.0; |
342 | 294 |
295 // start conservatively (around 50ms is about right) | |
296 _concurrent_mark_remark_times_ms->add(0.05); | |
297 _concurrent_mark_cleanup_times_ms->add(0.20); | |
298 _tenuring_threshold = MaxTenuringThreshold; | |
3868
ae73da50be4b
7081064: G1: remove develop params G1FixedSurvivorSpaceSize, G1FixedTenuringThreshold, and G1FixedEdenSize
tonyp
parents:
3867
diff
changeset
|
299 // _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
|
300 // update_young_list_target_length() during initialization. |
3868
ae73da50be4b
7081064: G1: remove develop params G1FixedSurvivorSpaceSize, G1FixedTenuringThreshold, and G1FixedEdenSize
tonyp
parents:
3867
diff
changeset
|
301 _max_survivor_regions = 0; |
545 | 302 |
1356 | 303 assert(GCTimeRatio > 0, |
304 "we should have set it to a default value set_g1_gc_flags() " | |
305 "if a user set it to 0"); | |
306 _gc_overhead_perc = 100.0 * (1.0 / (1.0 + GCTimeRatio)); | |
307 | |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
308 uintx reserve_perc = G1ReservePercent; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
309 // 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
|
310 if (reserve_perc > 50) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
311 reserve_perc = 50; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
312 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
|
313 "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
|
314 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
315 _reserve_factor = (double) reserve_perc / 100.0; |
3920
af2ab04e0038
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
3919
diff
changeset
|
316 // 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
|
317 // 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
|
318 _reserve_regions = 0; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
319 |
4013 | 320 _collectionSetChooser = new CollectionSetChooser(); |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
321 } |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
322 |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
323 void G1CollectorPolicy::initialize_alignments() { |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
324 _space_alignment = HeapRegion::GrainBytes; |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
325 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
|
326 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
|
327 _heap_alignment = MAX3(card_table_alignment, _space_alignment, page_size); |
342 | 328 } |
329 | |
330 void G1CollectorPolicy::initialize_flags() { | |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
331 if (G1HeapRegionSize != HeapRegion::GrainBytes) { |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
332 FLAG_SET_ERGO(uintx, G1HeapRegionSize, HeapRegion::GrainBytes); |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
333 } |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
334 |
547
1e458753107d
6802413: G1: G1FixedSurvivorSpaceSize should be converted into regions in calculate_survivors_policy()
apetrusenko
parents:
545
diff
changeset
|
335 if (SurvivorRatio < 1) { |
1e458753107d
6802413: G1: G1FixedSurvivorSpaceSize should be converted into regions in calculate_survivors_policy()
apetrusenko
parents:
545
diff
changeset
|
336 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
|
337 } |
342 | 338 CollectorPolicy::initialize_flags(); |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
339 _young_gen_sizer = new G1YoungGenSizer(); // Must be after call to initialize_flags |
342 | 340 } |
341 | |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
342 void G1CollectorPolicy::post_heap_initialize() { |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
343 uintx max_regions = G1CollectedHeap::heap()->max_regions(); |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
344 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
|
345 if (max_young_size != MaxNewSize) { |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
346 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
|
347 } |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
348 } |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
349 |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
350 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
|
351 _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
|
352 if (FLAG_IS_CMDLINE(NewRatio)) { |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
353 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
|
354 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
|
355 } else { |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
356 _sizer_kind = SizerNewRatio; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
357 _adaptive_size = false; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
358 return; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
359 } |
3976 | 360 } |
1285
a1c410de27e4
6928065: G1: use existing command line parameters to set the young generation size
tonyp
parents:
1283
diff
changeset
|
361 |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
362 if (NewSize > MaxNewSize) { |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
363 if (FLAG_IS_CMDLINE(MaxNewSize)) { |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
364 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
|
365 "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
|
366 NewSize/K, MaxNewSize/K, NewSize/K); |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
367 } |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
368 MaxNewSize = NewSize; |
12894
24f32d09a0d7
8023643: G1 assert failed when NewSize was specified greater than MaxNewSize
jwilhelm
parents:
12830
diff
changeset
|
369 } |
24f32d09a0d7
8023643: G1 assert failed when NewSize was specified greater than MaxNewSize
jwilhelm
parents:
12830
diff
changeset
|
370 |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
371 if (FLAG_IS_CMDLINE(NewSize)) { |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
372 _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
|
373 1U); |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
374 if (FLAG_IS_CMDLINE(MaxNewSize)) { |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
375 _max_desired_young_length = |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
376 MAX2((uint) (MaxNewSize / HeapRegion::GrainBytes), |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
377 1U); |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
378 _sizer_kind = SizerMaxAndNewSize; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
379 _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
|
380 } else { |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
381 _sizer_kind = SizerNewSizeOnly; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
382 } |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
383 } else if (FLAG_IS_CMDLINE(MaxNewSize)) { |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
384 _max_desired_young_length = |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
385 MAX2((uint) (MaxNewSize / HeapRegion::GrainBytes), |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
386 1U); |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
387 _sizer_kind = SizerMaxNewSizeOnly; |
1285
a1c410de27e4
6928065: G1: use existing command line parameters to set the young generation size
tonyp
parents:
1283
diff
changeset
|
388 } |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
389 } |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
390 |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
391 uint G1YoungGenSizer::calculate_default_min_length(uint new_number_of_heap_regions) { |
7449 | 392 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
|
393 return MAX2(1U, default_value); |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
394 } |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
395 |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
396 uint G1YoungGenSizer::calculate_default_max_length(uint new_number_of_heap_regions) { |
7449 | 397 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
|
398 return MAX2(1U, default_value); |
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 |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
401 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
|
402 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
|
403 |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
404 switch (_sizer_kind) { |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
405 case SizerDefaults: |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
406 *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
|
407 *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
|
408 break; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
409 case SizerNewSizeOnly: |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
410 *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
|
411 *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
|
412 break; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
413 case SizerMaxNewSizeOnly: |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
414 *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
|
415 *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
|
416 break; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
417 case SizerMaxAndNewSize: |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
418 // 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
|
419 break; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
420 case SizerNewRatio: |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
421 *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
|
422 *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
|
423 break; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
424 default: |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
425 ShouldNotReachHere(); |
1285
a1c410de27e4
6928065: G1: use existing command line parameters to set the young generation size
tonyp
parents:
1283
diff
changeset
|
426 } |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
427 |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
428 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
|
429 } |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
430 |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
431 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
|
432 // 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
|
433 // values in some cases. |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
434 uint temp = _min_desired_young_length; |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
435 uint result = _max_desired_young_length; |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
436 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
|
437 return result; |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
438 } |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
439 |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
440 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
|
441 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
|
442 &_max_desired_young_length); |
3920
af2ab04e0038
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
3919
diff
changeset
|
443 } |
af2ab04e0038
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
3919
diff
changeset
|
444 |
342 | 445 void G1CollectorPolicy::init() { |
446 // Set aside an initial future to_space. | |
447 _g1 = G1CollectedHeap::heap(); | |
448 | |
449 assert(Heap_lock->owned_by_self(), "Locking discipline."); | |
450 | |
545 | 451 initialize_gc_policy_counters(); |
452 | |
3920
af2ab04e0038
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
3919
diff
changeset
|
453 if (adaptive_young_list_length()) { |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
454 _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
|
455 } else { |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
456 _young_list_fixed_length = _young_gen_sizer->min_desired_young_length(); |
342 | 457 } |
20336
6701abbc4441
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
20292
diff
changeset
|
458 _free_regions_at_end_of_collection = _g1->num_free_regions(); |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
459 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
|
460 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
461 // 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
|
462 // 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
|
463 start_incremental_cset_building(); |
342 | 464 } |
465 | |
545 | 466 // 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
|
467 void G1CollectorPolicy::initialize_gc_policy_counters() { |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
468 _gc_policy_counters = new GCPolicyCounters("GarbageFirst", 1, 3); |
545 | 469 } |
470 | |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
471 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
|
472 double base_time_ms, |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
473 uint base_free_regions, |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
474 double target_pause_time_ms) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
475 if (young_length >= base_free_regions) { |
342 | 476 // end condition 1: not enough space for the young regions |
477 return false; | |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
478 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
479 |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
480 double accum_surv_rate = accum_yg_surv_rate_pred((int) young_length - 1); |
342 | 481 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
|
482 (size_t) (accum_surv_rate * (double) HeapRegion::GrainBytes); |
342 | 483 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
|
484 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
|
485 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
|
486 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
|
487 // end condition 2: prediction is over the target pause time |
342 | 488 return false; |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
489 } |
342 | 490 |
491 size_t free_bytes = | |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
492 (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
|
493 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
|
494 // end condition 3: out-of-space (conservatively!) |
342 | 495 return false; |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
496 } |
342 | 497 |
498 // success! | |
499 return true; | |
500 } | |
501 | |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
502 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
|
503 // re-calculate the necessary reserve |
af2ab04e0038
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
3919
diff
changeset
|
504 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
|
505 // 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
|
506 // 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
|
507 _reserve_regions = (uint) ceil(reserve_regions_d); |
3920
af2ab04e0038
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
3919
diff
changeset
|
508 |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
509 _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
|
510 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
511 |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
512 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
|
513 uint base_min_length) { |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
514 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
|
515 if (adaptive_young_list_length()) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
516 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
|
517 double now_sec = os::elapsedTime(); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
518 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
|
519 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
|
520 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
|
521 } else { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
522 // 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
|
523 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
524 } |
3920
af2ab04e0038
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
3919
diff
changeset
|
525 desired_min_length += base_min_length; |
af2ab04e0038
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
3919
diff
changeset
|
526 // 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
|
527 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
|
528 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
529 |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
530 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
|
531 // 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
|
532 // 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
|
533 // 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
|
534 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
|
535 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
536 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
537 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
|
538 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
|
539 // 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
|
540 // otherwise, use the given value. |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
541 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
|
542 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
543 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
544 // 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
|
545 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
546 // 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
|
547 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
|
548 // 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
|
549 // 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
|
550 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
|
551 uint desired_min_length = |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
552 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
|
553 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
|
554 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
|
555 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
556 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
557 // 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
|
558 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
559 // 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
|
560 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
|
561 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
|
562 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
|
563 } |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
564 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
|
565 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
|
566 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
|
567 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
568 |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
569 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
|
570 if (adaptive_young_list_length()) { |
4710 | 571 if (gcs_are_young()) { |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
572 young_list_target_length = |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
573 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
|
574 base_min_length, |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
575 desired_min_length, |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
576 desired_max_length); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
577 _rs_lengths_prediction = rs_lengths; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
578 } else { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
579 // 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
|
580 // 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
|
581 // 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
|
582 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
583 } else { |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
584 // 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
|
585 // 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
|
586 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
|
587 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
588 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
589 // 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
|
590 // 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
|
591 // 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
|
592 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
|
593 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
|
594 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
595 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
|
596 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
|
597 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
598 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
599 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
|
600 "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
|
601 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
|
602 _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
|
603 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
604 update_max_gc_locker_expansion(); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
605 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
606 |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
607 uint |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
608 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
|
609 uint base_min_length, |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
610 uint desired_min_length, |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
611 uint desired_max_length) { |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
612 assert(adaptive_young_list_length(), "pre-condition"); |
4710 | 613 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
|
614 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
615 // 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
|
616 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
|
617 return desired_min_length; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
618 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
619 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
620 // 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
|
621 // 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
|
622 // 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
|
623 // 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
|
624 // survivor_regions_evac_time prediction. |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
625 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
|
626 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
|
627 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
|
628 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
|
629 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
630 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
|
631 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
|
632 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
|
633 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
|
634 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
|
635 double base_time_ms = |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
636 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
|
637 survivor_regions_evac_time; |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
638 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
|
639 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
|
640 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
|
641 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
|
642 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
643 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
644 // 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
|
645 // 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
|
646 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
647 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
|
648 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
|
649 // 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
|
650 // 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
|
651 // 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
|
652 // 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
|
653 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
|
654 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
|
655 // 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
|
656 // 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
|
657 // 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
|
658 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
|
659 } else { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
660 // 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
|
661 // 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
|
662 // length. The loop invariants are: |
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 // 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
|
665 // 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
|
666 // 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
|
667 // |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
668 // 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
|
669 // 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
|
670 // 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
|
671 // 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
|
672 // 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
|
673 // 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
|
674 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
675 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
|
676 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
|
677 while (diff > 0) { |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
678 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
|
679 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
|
680 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
|
681 min_young_length = young_length; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
682 } else { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
683 max_young_length = young_length; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
684 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
685 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
|
686 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
|
687 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
688 // 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
|
689 // 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
|
690 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
691 // 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
|
692 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
|
693 "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
|
694 "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
|
695 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
|
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 " |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
698 "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 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
|
700 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
|
701 "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
|
702 "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
|
703 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
704 } else { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
705 // 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
|
706 // 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
|
707 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
708 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
|
709 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
710 |
545 | 711 double G1CollectorPolicy::predict_survivor_regions_evac_time() { |
712 double survivor_regions_evac_time = 0.0; | |
713 for (HeapRegion * r = _recorded_survivor_head; | |
714 r != NULL && r != _recorded_survivor_tail->get_next_young_region(); | |
715 r = r->get_next_young_region()) { | |
6611 | 716 survivor_regions_evac_time += predict_region_elapsed_time_ms(r, gcs_are_young()); |
545 | 717 } |
718 return survivor_regions_evac_time; | |
719 } | |
720 | |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
721 void G1CollectorPolicy::revise_young_list_target_length_if_necessary() { |
342 | 722 guarantee( adaptive_young_list_length(), "should not call this otherwise" ); |
723 | |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
724 size_t rs_lengths = _g1->young_list()->sampled_rs_lengths(); |
342 | 725 if (rs_lengths > _rs_lengths_prediction) { |
726 // add 10% to avoid having to recalculate often | |
727 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
|
728 update_young_list_target_length(rs_lengths_prediction); |
342 | 729 } |
730 } | |
731 | |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
732 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
733 |
342 | 734 HeapWord* G1CollectorPolicy::mem_allocate_work(size_t size, |
735 bool is_tlab, | |
736 bool* gc_overhead_limit_was_exceeded) { | |
737 guarantee(false, "Not using this policy feature yet."); | |
738 return NULL; | |
739 } | |
740 | |
741 // This method controls how a collector handles one or more | |
742 // of its generations being fully allocated. | |
743 HeapWord* G1CollectorPolicy::satisfy_failed_allocation(size_t size, | |
744 bool is_tlab) { | |
745 guarantee(false, "Not using this policy feature yet."); | |
746 return NULL; | |
747 } | |
748 | |
749 | |
750 #ifndef PRODUCT | |
751 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
|
752 HeapRegion* head = _g1->young_list()->first_region(); |
342 | 753 return |
754 verify_young_ages(head, _short_lived_surv_rate_group); | |
755 // also call verify_young_ages on any additional surv rate groups | |
756 } | |
757 | |
758 bool | |
759 G1CollectorPolicy::verify_young_ages(HeapRegion* head, | |
760 SurvRateGroup *surv_rate_group) { | |
761 guarantee( surv_rate_group != NULL, "pre-condition" ); | |
762 | |
763 const char* name = surv_rate_group->name(); | |
764 bool ret = true; | |
765 int prev_age = -1; | |
766 | |
767 for (HeapRegion* curr = head; | |
768 curr != NULL; | |
769 curr = curr->get_next_young_region()) { | |
770 SurvRateGroup* group = curr->surv_rate_group(); | |
771 if (group == NULL && !curr->is_survivor()) { | |
772 gclog_or_tty->print_cr("## %s: encountered NULL surv_rate_group", name); | |
773 ret = false; | |
774 } | |
775 | |
776 if (surv_rate_group == group) { | |
777 int age = curr->age_in_surv_rate_group(); | |
778 | |
779 if (age < 0) { | |
780 gclog_or_tty->print_cr("## %s: encountered negative age", name); | |
781 ret = false; | |
782 } | |
783 | |
784 if (age <= prev_age) { | |
785 gclog_or_tty->print_cr("## %s: region ages are not strictly increasing " | |
786 "(%d, %d)", name, age, prev_age); | |
787 ret = false; | |
788 } | |
789 prev_age = age; | |
790 } | |
791 } | |
792 | |
793 return ret; | |
794 } | |
795 #endif // PRODUCT | |
796 | |
797 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
|
798 _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
|
799 record_heap_size_info_at_start(true /* full */); |
342 | 800 // Release the future to-space so that it is available for compaction into. |
801 _g1->set_full_collection(); | |
802 } | |
803 | |
804 void G1CollectorPolicy::record_full_collection_end() { | |
805 // Consider this like a collection pause for the purposes of allocation | |
806 // since last pause. | |
807 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
|
808 double full_gc_time_sec = end_sec - _full_collection_start_sec; |
342 | 809 double full_gc_time_ms = full_gc_time_sec * 1000.0; |
810 | |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
811 _trace_gen1_time_data.record_full_collection(full_gc_time_ms); |
342 | 812 |
595
3698e8f47799
6804746: G1: guarantee(variance() > -1.0,"variance should be >= 0") (due to evacuation failure)
tonyp
parents:
547
diff
changeset
|
813 update_recent_gc_times(end_sec, full_gc_time_ms); |
342 | 814 |
815 _g1->clear_full_collection(); | |
816 | |
4710 | 817 // "Nuke" the heuristics that control the young/mixed GC |
818 // transitions and make sure we start with young GCs after the Full GC. | |
819 set_gcs_are_young(true); | |
820 _last_young_gc = false; | |
1359
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
821 clear_initiate_conc_mark_if_possible(); |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
822 clear_during_initial_mark_pause(); |
342 | 823 _in_marking_window = false; |
824 _in_marking_window_im = false; | |
825 | |
826 _short_lived_surv_rate_group->start_adding_regions(); | |
827 // also call this on any additional surv rate groups | |
828 | |
545 | 829 record_survivor_regions(0, NULL, NULL); |
830 | |
20336
6701abbc4441
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
20292
diff
changeset
|
831 _free_regions_at_end_of_collection = _g1->num_free_regions(); |
545 | 832 // Reset survivors SurvRateGroup. |
833 _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
|
834 update_young_list_target_length(); |
6011 | 835 _collectionSetChooser->clear(); |
1973 | 836 } |
342 | 837 |
838 void G1CollectorPolicy::record_stop_world_start() { | |
839 _stop_world_start = os::elapsedTime(); | |
840 } | |
841 | |
10098
71013d764f6e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
8681
diff
changeset
|
842 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
|
843 // 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
|
844 // 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
|
845 // 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
|
846 update_survivors_policy(); |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
847 |
1973 | 848 assert(_g1->used() == _g1->recalculate_used(), |
849 err_msg("sanity, used: "SIZE_FORMAT" recalculate_used: "SIZE_FORMAT, | |
850 _g1->used(), _g1->recalculate_used())); | |
342 | 851 |
852 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
|
853 _trace_gen0_time_data.record_start_collection(s_w_t_ms); |
342 | 854 _stop_world_start = 0.0; |
855 | |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
856 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
|
857 |
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
|
858 phase_times()->record_cur_collection_start_sec(start_time_sec); |
342 | 859 _pending_cards = _g1->pending_card_num(); |
860 | |
6611 | 861 _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
|
862 _bytes_copied_during_gc = 0; |
342 | 863 |
4710 | 864 _last_gc_was_young = false; |
342 | 865 |
866 // do that for any other surv rate groups | |
867 _short_lived_surv_rate_group->stop_adding_regions(); | |
1282 | 868 _survivors_age_table.clear(); |
545 | 869 |
342 | 870 assert( verify_young_ages(), "region age verification" ); |
871 } | |
872 | |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
873 void G1CollectorPolicy::record_concurrent_mark_init_end(double |
342 | 874 mark_init_elapsed_time_ms) { |
875 _during_marking = true; | |
1359
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
876 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
|
877 clear_during_initial_mark_pause(); |
342 | 878 _cur_mark_stop_world_time_ms = mark_init_elapsed_time_ms; |
879 } | |
880 | |
881 void G1CollectorPolicy::record_concurrent_mark_remark_start() { | |
882 _mark_remark_start_sec = os::elapsedTime(); | |
883 _during_marking = false; | |
884 } | |
885 | |
886 void G1CollectorPolicy::record_concurrent_mark_remark_end() { | |
887 double end_time_sec = os::elapsedTime(); | |
888 double elapsed_time_ms = (end_time_sec - _mark_remark_start_sec)*1000.0; | |
889 _concurrent_mark_remark_times_ms->add(elapsed_time_ms); | |
890 _cur_mark_stop_world_time_ms += elapsed_time_ms; | |
891 _prev_collection_pause_end_ms += elapsed_time_ms; | |
892 | |
893 _mmu_tracker->add_pause(_mark_remark_start_sec, end_time_sec, true); | |
894 } | |
895 | |
896 void G1CollectorPolicy::record_concurrent_mark_cleanup_start() { | |
897 _mark_cleanup_start_sec = os::elapsedTime(); | |
898 } | |
899 | |
4013 | 900 void G1CollectorPolicy::record_concurrent_mark_cleanup_completed() { |
4710 | 901 _last_young_gc = true; |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
902 _in_marking_window = false; |
342 | 903 } |
904 | |
905 void G1CollectorPolicy::record_concurrent_pause() { | |
906 if (_stop_world_start > 0.0) { | |
907 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
|
908 _trace_gen0_time_data.record_yield_time(yield_ms); |
342 | 909 } |
910 } | |
911 | |
4834
6a78aa6ac1ff
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
4829
diff
changeset
|
912 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
|
913 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
|
914 return false; |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
915 } |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
916 |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
917 size_t marking_initiating_used_threshold = |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
918 (_g1->capacity() / 100) * InitiatingHeapOccupancyPercent; |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
919 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
|
920 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
|
921 |
6a78aa6ac1ff
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
4829
diff
changeset
|
922 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
|
923 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
|
924 ergo_verbose5(ErgoConcCycles, |
4829
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
925 "request concurrent cycle initiation", |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
926 ergo_format_reason("occupancy higher than threshold") |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
927 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
|
928 ergo_format_byte("allocation request") |
4829
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
929 ergo_format_byte_perc("threshold") |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
930 ergo_format_str("source"), |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
931 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
|
932 alloc_byte_size, |
4829
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
933 marking_initiating_used_threshold, |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
934 (double) InitiatingHeapOccupancyPercent, |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
935 source); |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
936 return true; |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
937 } else { |
4834
6a78aa6ac1ff
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
4829
diff
changeset
|
938 ergo_verbose5(ErgoConcCycles, |
4829
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
939 "do not request concurrent cycle initiation", |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
940 ergo_format_reason("still doing mixed collections") |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
941 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
|
942 ergo_format_byte("allocation request") |
4829
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
943 ergo_format_byte_perc("threshold") |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
944 ergo_format_str("source"), |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
945 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
|
946 alloc_byte_size, |
4829
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
947 marking_initiating_used_threshold, |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
948 (double) InitiatingHeapOccupancyPercent, |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
949 source); |
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 } |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
952 |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
953 return false; |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
954 } |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
955 |
342 | 956 // Anything below that is considered to be zero |
957 #define MIN_TIMER_GRANULARITY 0.0000001 | |
958 | |
10405 | 959 void G1CollectorPolicy::record_collection_pause_end(double pause_time_ms, EvacuationInfo& evacuation_info) { |
342 | 960 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
|
961 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
|
962 "otherwise, the subtraction below does not make sense"); |
342 | 963 size_t rs_size = |
4090
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
964 _cur_collection_pause_used_regions_at_start - cset_region_length(); |
342 | 965 size_t cur_used_bytes = _g1->used(); |
966 assert(cur_used_bytes == _g1->recalculate_used(), "It should!"); | |
967 bool last_pause_included_initial_mark = false; | |
1707 | 968 bool update_stats = !_g1->evacuation_failed(); |
342 | 969 |
970 #ifndef PRODUCT | |
971 if (G1YoungSurvRateVerbose) { | |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17866
diff
changeset
|
972 gclog_or_tty->cr(); |
342 | 973 _short_lived_surv_rate_group->print(); |
974 // do that for any other surv rate groups too | |
975 } | |
976 #endif // PRODUCT | |
977 | |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
978 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
|
979 if (last_pause_included_initial_mark) { |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
980 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
|
981 } 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
|
982 // 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
|
983 // 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
|
984 // 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
|
985 set_initiate_conc_mark_if_possible(); |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
986 } |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
987 |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
988 _mmu_tracker->add_pause(end_time_sec - pause_time_ms/1000.0, |
342 | 989 end_time_sec, false); |
990 | |
10405 | 991 evacuation_info.set_collectionset_used_before(_collection_set_bytes_used_before); |
992 evacuation_info.set_bytes_copied(_bytes_copied_during_gc); | |
993 | |
595
3698e8f47799
6804746: G1: guarantee(variance() > -1.0,"variance should be >= 0") (due to evacuation failure)
tonyp
parents:
547
diff
changeset
|
994 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
|
995 _trace_gen0_time_data.record_end_collection(pause_time_ms, phase_times()); |
342 | 996 // this is where we update the allocation rate of the application |
997 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
|
998 (phase_times()->cur_collection_start_sec() * 1000.0 - _prev_collection_pause_end_ms); |
342 | 999 if (app_time_ms < MIN_TIMER_GRANULARITY) { |
1000 // This usually happens due to the timer not having the required | |
1001 // granularity. Some Linuxes are the usual culprits. | |
1002 // We'll just set it to something (arbitrarily) small. | |
1003 app_time_ms = 1.0; | |
1004 } | |
4090
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1005 // 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
|
1006 // 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
|
1007 // 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
|
1008 // 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
|
1009 // 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
|
1010 // 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
|
1011 // 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
|
1012 // 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
|
1013 uint regions_allocated = eden_cset_region_length(); |
342 | 1014 double alloc_rate_ms = (double) regions_allocated / app_time_ms; |
1015 _alloc_rate_ms_seq->add(alloc_rate_ms); | |
1016 | |
1017 double interval_ms = | |
1018 (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
|
1019 update_recent_gc_times(end_time_sec, pause_time_ms); |
342 | 1020 _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
|
1021 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
|
1022 (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
|
1023 #ifndef PRODUCT |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1024 // 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
|
1025 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
|
1026 gclog_or_tty->print_cr("-------------------------------------------"); |
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("Recent GC Times (ms):"); |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1028 _recent_gc_times_ms->dump(); |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1029 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
|
1030 _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
|
1031 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
|
1032 _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
|
1033 // 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
|
1034 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
|
1035 #endif // !PRODUCT |
23b9a8d315fc
6902701: G1: protect debugging code related to 6898948 with a debug flag
ysr
parents:
1086
diff
changeset
|
1036 // 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
|
1037 // 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
|
1038 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
|
1039 _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
|
1040 } else { |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1041 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
|
1042 _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
|
1043 } |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1044 } |
342 | 1045 } |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1046 |
342 | 1047 bool new_in_marking_window = _in_marking_window; |
1048 bool new_in_marking_window_im = false; | |
20292
5d7a63aee595
8049051: Use of during_initial_mark_pause() in G1CollectorPolicy::record_collection_pause_end() prevents use of seperate object copy time prediction during marking
tschatzl
parents:
17937
diff
changeset
|
1049 if (last_pause_included_initial_mark) { |
342 | 1050 new_in_marking_window = true; |
1051 new_in_marking_window_im = true; | |
1052 } | |
1053 | |
4710 | 1054 if (_last_young_gc) { |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1055 // 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
|
1056 // 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
|
1057 |
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
|
1058 if (!last_pause_included_initial_mark) { |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1059 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
|
1060 "do not start mixed GCs")) { |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1061 set_gcs_are_young(false); |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1062 } |
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
|
1063 } else { |
4710 | 1064 ergo_verbose0(ErgoMixedGCs, |
1065 "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
|
1066 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
|
1067 } |
4710 | 1068 _last_young_gc = false; |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1069 } |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1070 |
4710 | 1071 if (!_last_gc_was_young) { |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1072 // 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
|
1073 // mixed GCs or not. |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1074 |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1075 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
|
1076 "do not continue mixed GCs")) { |
4710 | 1077 set_gcs_are_young(true); |
342 | 1078 } |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1079 } |
4710 | 1080 |
342 | 1081 _short_lived_surv_rate_group->start_adding_regions(); |
1082 // do that for any other surv rate groupsx | |
1083 | |
677 | 1084 if (update_stats) { |
342 | 1085 double cost_per_card_ms = 0.0; |
1086 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
|
1087 cost_per_card_ms = phase_times()->average_last_update_rs_time() / (double) _pending_cards; |
342 | 1088 _cost_per_card_ms_seq->add(cost_per_card_ms); |
1089 } | |
1090 | |
1091 size_t cards_scanned = _g1->cards_scanned(); | |
1092 | |
1093 double cost_per_entry_ms = 0.0; | |
1094 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
|
1095 cost_per_entry_ms = phase_times()->average_last_scan_rs_time() / (double) cards_scanned; |
4710 | 1096 if (_last_gc_was_young) { |
342 | 1097 _cost_per_entry_ms_seq->add(cost_per_entry_ms); |
4710 | 1098 } else { |
1099 _mixed_cost_per_entry_ms_seq->add(cost_per_entry_ms); | |
1100 } | |
342 | 1101 } |
1102 | |
1103 if (_max_rs_lengths > 0) { | |
1104 double cards_per_entry_ratio = | |
1105 (double) cards_scanned / (double) _max_rs_lengths; | |
4710 | 1106 if (_last_gc_was_young) { |
1107 _young_cards_per_entry_ratio_seq->add(cards_per_entry_ratio); | |
1108 } else { | |
1109 _mixed_cards_per_entry_ratio_seq->add(cards_per_entry_ratio); | |
1110 } | |
342 | 1111 } |
1112 | |
4727
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1113 // 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
|
1114 // 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
|
1115 // 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
|
1116 // 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
|
1117 // _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
|
1118 // 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
|
1119 // 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
|
1120 // _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
|
1121 // 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
|
1122 // 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
|
1123 // 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
|
1124 // 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
|
1125 // conditional below just in case. |
4130
d23d2b18183e
7118202: G1: eden size unnecessarily drops to a minimum
tonyp
parents:
4097
diff
changeset
|
1126 size_t rs_length_diff = 0; |
d23d2b18183e
7118202: G1: eden size unnecessarily drops to a minimum
tonyp
parents:
4097
diff
changeset
|
1127 if (_max_rs_lengths > _recorded_rs_lengths) { |
d23d2b18183e
7118202: G1: eden size unnecessarily drops to a minimum
tonyp
parents:
4097
diff
changeset
|
1128 rs_length_diff = _max_rs_lengths - _recorded_rs_lengths; |
d23d2b18183e
7118202: G1: eden size unnecessarily drops to a minimum
tonyp
parents:
4097
diff
changeset
|
1129 } |
d23d2b18183e
7118202: G1: eden size unnecessarily drops to a minimum
tonyp
parents:
4097
diff
changeset
|
1130 _rs_length_diff_seq->add((double) rs_length_diff); |
342 | 1131 |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1132 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
|
1133 size_t copied_bytes = _collection_set_bytes_used_before - freed_bytes; |
342 | 1134 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
|
1135 |
342 | 1136 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
|
1137 cost_per_byte_ms = phase_times()->average_last_obj_copy_time() / (double) copied_bytes; |
4710 | 1138 if (_in_marking_window) { |
342 | 1139 _cost_per_byte_ms_during_cm_seq->add(cost_per_byte_ms); |
4710 | 1140 } else { |
342 | 1141 _cost_per_byte_ms_seq->add(cost_per_byte_ms); |
4710 | 1142 } |
342 | 1143 } |
1144 | |
1145 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
|
1146 (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
|
1147 + phase_times()->average_last_obj_copy_time() + phase_times()->average_last_termination_time()); |
342 | 1148 |
1149 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
|
1150 if (young_cset_region_length() > 0) { |
342 | 1151 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
|
1152 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
|
1153 phase_times()->young_free_cset_time_ms(); |
342 | 1154 _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
|
1155 (double) young_cset_region_length()); |
342 | 1156 } |
1157 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
|
1158 if (old_cset_region_length() > 0) { |
342 | 1159 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
|
1160 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
|
1161 phase_times()->non_young_free_cset_time_ms(); |
342 | 1162 |
1163 _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
|
1164 (double) old_cset_region_length()); |
342 | 1165 } |
1166 | |
1167 double constant_other_time_ms = all_other_time_ms - | |
1168 (young_other_time_ms + non_young_other_time_ms); | |
1169 _constant_other_time_ms_seq->add(constant_other_time_ms); | |
1170 | |
1171 double survival_ratio = 0.0; | |
6611 | 1172 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
|
1173 survival_ratio = (double) _bytes_copied_during_gc / |
6611 | 1174 (double) _collection_set_bytes_used_before; |
342 | 1175 } |
1176 | |
1177 _pending_cards_seq->add((double) _pending_cards); | |
1178 _rs_lengths_seq->add((double) _max_rs_lengths); | |
1179 } | |
1180 | |
1181 _in_marking_window = new_in_marking_window; | |
1182 _in_marking_window_im = new_in_marking_window_im; | |
20336
6701abbc4441
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
20292
diff
changeset
|
1183 _free_regions_at_end_of_collection = _g1->num_free_regions(); |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
1184 update_young_list_target_length(); |
342 | 1185 |
1111 | 1186 // Note that _mmu_tracker->max_gc_time() returns the time in seconds. |
1282 | 1187 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
|
1188 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
|
1189 phase_times()->sum_last_update_rs_processed_buffers(), update_rs_time_goal_ms); |
4013 | 1190 |
6011 | 1191 _collectionSetChooser->verify(); |
342 | 1192 } |
1193 | |
6059 | 1194 #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
|
1195 #define EXT_SIZE_PARAMS(bytes) \ |
6059 | 1196 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
|
1197 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
|
1198 |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1199 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
|
1200 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
|
1201 _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
|
1202 _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
|
1203 _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
|
1204 _heap_used_bytes_before_gc = _g1->used(); |
20336
6701abbc4441
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
20292
diff
changeset
|
1205 _cur_collection_pause_used_regions_at_start = _g1->num_used_regions(); |
10098
71013d764f6e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
8681
diff
changeset
|
1206 |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1207 _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
|
1208 (_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
|
1209 |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1210 if (full) { |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
13060
diff
changeset
|
1211 _metaspace_used_bytes_before_gc = MetaspaceAux::used_bytes(); |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1212 } |
10098
71013d764f6e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
8681
diff
changeset
|
1213 } |
71013d764f6e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
8681
diff
changeset
|
1214 |
3764
053d84a76d3d
7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions
tonyp
parents:
2430
diff
changeset
|
1215 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
|
1216 _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
|
1217 _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
|
1218 _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
|
1219 _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
|
1220 } |
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
1221 |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1222 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
|
1223 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
|
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 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
|
1226 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
|
1227 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
|
1228 |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1229 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
|
1230 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
|
1231 (_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
|
1232 |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1233 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
|
1234 " [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
|
1235 "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
|
1236 "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
|
1237 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
|
1238 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
|
1239 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
|
1240 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
|
1241 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
|
1242 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
|
1243 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
|
1244 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
|
1245 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
|
1246 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
|
1247 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
|
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 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
|
1250 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
|
1251 } |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1252 |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1253 gclog_or_tty->cr(); |
3764
053d84a76d3d
7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions
tonyp
parents:
2430
diff
changeset
|
1254 } |
053d84a76d3d
7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions
tonyp
parents:
2430
diff
changeset
|
1255 |
1111 | 1256 void G1CollectorPolicy::adjust_concurrent_refinement(double update_rs_time, |
1257 double update_rs_processed_buffers, | |
1258 double goal_ms) { | |
1259 DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set(); | |
1260 ConcurrentG1Refine *cg1r = G1CollectedHeap::heap()->concurrent_g1_refine(); | |
1261 | |
1282 | 1262 if (G1UseAdaptiveConcRefinement) { |
1111 | 1263 const int k_gy = 3, k_gr = 6; |
1264 const double inc_k = 1.1, dec_k = 0.9; | |
1265 | |
1266 int g = cg1r->green_zone(); | |
1267 if (update_rs_time > goal_ms) { | |
1268 g = (int)(g * dec_k); // Can become 0, that's OK. That would mean a mutator-only processing. | |
1269 } else { | |
1270 if (update_rs_time < goal_ms && update_rs_processed_buffers > g) { | |
1271 g = (int)MAX2(g * inc_k, g + 1.0); | |
1272 } | |
1273 } | |
1274 // Change the refinement threads params | |
1275 cg1r->set_green_zone(g); | |
1276 cg1r->set_yellow_zone(g * k_gy); | |
1277 cg1r->set_red_zone(g * k_gr); | |
1278 cg1r->reinitialize_threads(); | |
1279 | |
1280 int processing_threshold_delta = MAX2((int)(cg1r->green_zone() * sigma()), 1); | |
1281 int processing_threshold = MIN2(cg1r->green_zone() + processing_threshold_delta, | |
1282 cg1r->yellow_zone()); | |
1283 // Change the barrier params | |
1284 dcqs.set_process_completed_threshold(processing_threshold); | |
1285 dcqs.set_max_completed_queue(cg1r->red_zone()); | |
1286 } | |
1287 | |
1288 int curr_queue_size = dcqs.completed_buffers_num(); | |
1289 if (curr_queue_size >= cg1r->yellow_zone()) { | |
1290 dcqs.set_completed_queue_padding(curr_queue_size); | |
1291 } else { | |
1292 dcqs.set_completed_queue_padding(0); | |
1293 } | |
1294 dcqs.notify_if_necessary(); | |
1295 } | |
1296 | |
342 | 1297 double |
1298 G1CollectorPolicy::predict_base_elapsed_time_ms(size_t pending_cards, | |
1299 size_t scanned_cards) { | |
1300 return | |
1301 predict_rs_update_time_ms(pending_cards) + | |
1302 predict_rs_scan_time_ms(scanned_cards) + | |
1303 predict_constant_other_time_ms(); | |
1304 } | |
1305 | |
1306 double | |
6611 | 1307 G1CollectorPolicy::predict_base_elapsed_time_ms(size_t pending_cards) { |
1308 size_t rs_length = predict_rs_length_diff(); | |
342 | 1309 size_t card_num; |
4710 | 1310 if (gcs_are_young()) { |
342 | 1311 card_num = predict_young_card_num(rs_length); |
4710 | 1312 } else { |
342 | 1313 card_num = predict_non_young_card_num(rs_length); |
4710 | 1314 } |
6611 | 1315 return predict_base_elapsed_time_ms(pending_cards, card_num); |
342 | 1316 } |
1317 | |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1318 size_t G1CollectorPolicy::predict_bytes_to_copy(HeapRegion* hr) { |
342 | 1319 size_t bytes_to_copy; |
1320 if (hr->is_marked()) | |
1321 bytes_to_copy = hr->max_live_bytes(); | |
1322 else { | |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1323 assert(hr->is_young() && hr->age_in_surv_rate_group() != -1, "invariant"); |
342 | 1324 int age = hr->age_in_surv_rate_group(); |
545 | 1325 double yg_surv_rate = predict_yg_surv_rate(age, hr->surv_rate_group()); |
342 | 1326 bytes_to_copy = (size_t) ((double) hr->used() * yg_surv_rate); |
1327 } | |
1328 return bytes_to_copy; | |
1329 } | |
1330 | |
6611 | 1331 double |
1332 G1CollectorPolicy::predict_region_elapsed_time_ms(HeapRegion* hr, | |
1333 bool for_young_gc) { | |
1334 size_t rs_length = hr->rem_set()->occupied(); | |
1335 size_t card_num; | |
1336 | |
1337 // Predicting the number of cards is based on which type of GC | |
1338 // we're predicting for. | |
1339 if (for_young_gc) { | |
1340 card_num = predict_young_card_num(rs_length); | |
1341 } else { | |
1342 card_num = predict_non_young_card_num(rs_length); | |
1343 } | |
1344 size_t bytes_to_copy = predict_bytes_to_copy(hr); | |
1345 | |
1346 double region_elapsed_time_ms = | |
1347 predict_rs_scan_time_ms(card_num) + | |
1348 predict_object_copy_time_ms(bytes_to_copy); | |
1349 | |
1350 // The prediction of the "other" time for this region is based | |
1351 // upon the region type and NOT the GC type. | |
1352 if (hr->is_young()) { | |
1353 region_elapsed_time_ms += predict_young_other_time_ms(1); | |
1354 } else { | |
1355 region_elapsed_time_ms += predict_non_young_other_time_ms(1); | |
1356 } | |
1357 return region_elapsed_time_ms; | |
1358 } | |
1359 | |
342 | 1360 void |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1361 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
|
1362 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
|
1363 _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
|
1364 _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
|
1365 _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
|
1366 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1367 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1368 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
|
1369 _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
|
1370 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1371 |
342 | 1372 void G1CollectorPolicy::update_recent_gc_times(double end_time_sec, |
1373 double elapsed_ms) { | |
1374 _recent_gc_times_ms->add(elapsed_ms); | |
1375 _recent_prev_end_times_for_all_gcs_sec->add(end_time_sec); | |
1376 _prev_collection_pause_end_ms = end_time_sec * 1000.0; | |
1377 } | |
1378 | |
1379 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
|
1380 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
|
1381 double threshold = _gc_overhead_perc; |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1382 if (recent_gc_overhead > threshold) { |
751 | 1383 // We will double the existing space, or take |
1384 // G1ExpandByPercentOfAvailable % of the available expansion | |
1385 // space, whichever is smaller, bounded below by a minimum | |
1386 // expansion (unless that's all that's left.) | |
342 | 1387 const size_t min_expand_bytes = 1*M; |
2188
c33825b68624
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
2152
diff
changeset
|
1388 size_t reserved_bytes = _g1->max_capacity(); |
342 | 1389 size_t committed_bytes = _g1->capacity(); |
1390 size_t uncommitted_bytes = reserved_bytes - committed_bytes; | |
1391 size_t expand_bytes; | |
1392 size_t expand_bytes_via_pct = | |
751 | 1393 uncommitted_bytes * G1ExpandByPercentOfAvailable / 100; |
342 | 1394 expand_bytes = MIN2(expand_bytes_via_pct, committed_bytes); |
1395 expand_bytes = MAX2(expand_bytes, min_expand_bytes); | |
1396 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
|
1397 |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1398 ergo_verbose5(ErgoHeapSizing, |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1399 "attempt heap expansion", |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1400 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
|
1401 "threshold after GC") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1402 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
|
1403 ergo_format_perc("threshold") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1404 ergo_format_byte("uncommitted") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1405 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
|
1406 recent_gc_overhead, threshold, |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1407 uncommitted_bytes, |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1408 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
|
1409 |
342 | 1410 return expand_bytes; |
1411 } else { | |
1412 return 0; | |
1413 } | |
1414 } | |
1415 | |
1416 void G1CollectorPolicy::print_tracing_info() const { | |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
1417 _trace_gen0_time_data.print(); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
1418 _trace_gen1_time_data.print(); |
342 | 1419 } |
1420 | |
1421 void G1CollectorPolicy::print_yg_surv_rate_info() const { | |
1422 #ifndef PRODUCT | |
1423 _short_lived_surv_rate_group->print_surv_rate_summary(); | |
1424 // add this call for any other surv rate groups | |
1425 #endif // PRODUCT | |
1426 } | |
1427 | |
20655
b840813adfcc
8065305: Make it possible to extend the G1CollectorPolicy
jwilhelm
parents:
20481
diff
changeset
|
1428 bool G1CollectorPolicy::is_young_list_full() { |
b840813adfcc
8065305: Make it possible to extend the G1CollectorPolicy
jwilhelm
parents:
20481
diff
changeset
|
1429 uint young_list_length = _g1->young_list()->length(); |
b840813adfcc
8065305: Make it possible to extend the G1CollectorPolicy
jwilhelm
parents:
20481
diff
changeset
|
1430 uint young_list_target_length = _young_list_target_length; |
b840813adfcc
8065305: Make it possible to extend the G1CollectorPolicy
jwilhelm
parents:
20481
diff
changeset
|
1431 return young_list_length >= young_list_target_length; |
b840813adfcc
8065305: Make it possible to extend the G1CollectorPolicy
jwilhelm
parents:
20481
diff
changeset
|
1432 } |
b840813adfcc
8065305: Make it possible to extend the G1CollectorPolicy
jwilhelm
parents:
20481
diff
changeset
|
1433 |
b840813adfcc
8065305: Make it possible to extend the G1CollectorPolicy
jwilhelm
parents:
20481
diff
changeset
|
1434 bool G1CollectorPolicy::can_expand_young_list() { |
b840813adfcc
8065305: Make it possible to extend the G1CollectorPolicy
jwilhelm
parents:
20481
diff
changeset
|
1435 uint young_list_length = _g1->young_list()->length(); |
b840813adfcc
8065305: Make it possible to extend the G1CollectorPolicy
jwilhelm
parents:
20481
diff
changeset
|
1436 uint young_list_max_length = _young_list_max_length; |
b840813adfcc
8065305: Make it possible to extend the G1CollectorPolicy
jwilhelm
parents:
20481
diff
changeset
|
1437 return young_list_length < young_list_max_length; |
b840813adfcc
8065305: Make it possible to extend the G1CollectorPolicy
jwilhelm
parents:
20481
diff
changeset
|
1438 } |
b840813adfcc
8065305: Make it possible to extend the G1CollectorPolicy
jwilhelm
parents:
20481
diff
changeset
|
1439 |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1440 uint G1CollectorPolicy::max_regions(int purpose) { |
342 | 1441 switch (purpose) { |
1442 case GCAllocForSurvived: | |
545 | 1443 return _max_survivor_regions; |
342 | 1444 case GCAllocForTenured: |
545 | 1445 return REGIONS_UNLIMITED; |
342 | 1446 default: |
545 | 1447 ShouldNotReachHere(); |
1448 return REGIONS_UNLIMITED; | |
342 | 1449 }; |
1450 } | |
1451 | |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
1452 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
|
1453 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
|
1454 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
|
1455 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
|
1456 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
|
1457 // 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
|
1458 // 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
|
1459 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
|
1460 } else { |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1973
diff
changeset
|
1461 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
|
1462 } |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1973
diff
changeset
|
1463 _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
|
1464 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
|
1465 } |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1973
diff
changeset
|
1466 |
545 | 1467 // Calculates survivor space parameters. |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
1468 void G1CollectorPolicy::update_survivors_policy() { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
1469 double max_survivor_regions_d = |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
1470 (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
|
1471 // 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
|
1472 // 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
|
1473 _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
|
1474 |
3868
ae73da50be4b
7081064: G1: remove develop params G1FixedSurvivorSpaceSize, G1FixedTenuringThreshold, and G1FixedEdenSize
tonyp
parents:
3867
diff
changeset
|
1475 _tenuring_threshold = _survivors_age_table.compute_tenuring_threshold( |
545 | 1476 HeapRegion::GrainWords * _max_survivor_regions); |
1477 } | |
1478 | |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1479 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
|
1480 GCCause::Cause gc_cause) { |
1656
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1481 bool during_cycle = _g1->concurrent_mark()->cmThread()->during_cycle(); |
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1482 if (!during_cycle) { |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1483 ergo_verbose1(ErgoConcCycles, |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1484 "request concurrent cycle initiation", |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1485 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
|
1486 ergo_format_str("GC cause"), |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1487 GCCause::to_string(gc_cause)); |
1656
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1488 set_initiate_conc_mark_if_possible(); |
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1489 return true; |
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1490 } else { |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1491 ergo_verbose1(ErgoConcCycles, |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1492 "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
|
1493 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
|
1494 ergo_format_str("GC cause"), |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1495 GCCause::to_string(gc_cause)); |
1656
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1496 return false; |
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1497 } |
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1498 } |
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1499 |
342 | 1500 void |
1359
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1501 G1CollectorPolicy::decide_on_conc_mark_initiation() { |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1502 // 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
|
1503 // initial-mark pause. |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1504 |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1505 // 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
|
1506 // 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
|
1507 // 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
|
1508 // initial-mark pause). |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1509 assert(!during_initial_mark_pause(), "pre-condition"); |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1510 |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1511 if (initiate_conc_mark_if_possible()) { |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1512 // 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
|
1513 // 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
|
1514 // concurrent marking cycle. So we might initiate one. |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1515 |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1516 bool during_cycle = _g1->concurrent_mark()->cmThread()->during_cycle(); |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1517 if (!during_cycle) { |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1518 // 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
|
1519 // 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
|
1520 // initiate a new cycle. |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1521 |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1522 set_during_initial_mark_pause(); |
4710 | 1523 // We do not allow mixed GCs during marking. |
1524 if (!gcs_are_young()) { | |
1525 set_gcs_are_young(true); | |
1526 ergo_verbose0(ErgoMixedGCs, | |
1527 "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
|
1528 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
|
1529 } |
1359
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1530 |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1531 // 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
|
1532 // we've already acted on it. |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1533 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
|
1534 |
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 "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 initiation requested")); |
1359
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1538 } else { |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1539 // The concurrent marking thread is still finishing up the |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1540 // 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
|
1541 // overlap. In particular, the concurrent marking thread might |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1542 // 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
|
1543 // 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
|
1544 // 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
|
1545 // 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
|
1546 // 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
|
1547 // periodically yields while clearing the next marking bitmap |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1548 // 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
|
1549 // 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
|
1550 // 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
|
1551 ergo_verbose0(ErgoConcCycles, |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1552 "do not initiate concurrent cycle", |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1553 ergo_format_reason("concurrent cycle already in progress")); |
1359
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1554 } |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1555 } |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1556 } |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1557 |
342 | 1558 class KnownGarbageClosure: public HeapRegionClosure { |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1559 G1CollectedHeap* _g1h; |
342 | 1560 CollectionSetChooser* _hrSorted; |
1561 | |
1562 public: | |
1563 KnownGarbageClosure(CollectionSetChooser* hrSorted) : | |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1564 _g1h(G1CollectedHeap::heap()), _hrSorted(hrSorted) { } |
342 | 1565 |
1566 bool doHeapRegion(HeapRegion* r) { | |
1567 // We only include humongous regions in collection | |
1568 // sets when concurrent mark shows that their contained object is | |
1569 // unreachable. | |
1570 | |
1571 // Do we have any marking information for this region? | |
1572 if (r->is_marked()) { | |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1573 // 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
|
1574 // 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
|
1575 // before we fill them up). |
6011 | 1576 if (_hrSorted->should_add(r) && !_g1h->is_old_gc_alloc_region(r)) { |
1577 _hrSorted->add_region(r); | |
342 | 1578 } |
1579 } | |
1580 return false; | |
1581 } | |
1582 }; | |
1583 | |
1584 class ParKnownGarbageHRClosure: public HeapRegionClosure { | |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1585 G1CollectedHeap* _g1h; |
6254
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6219
diff
changeset
|
1586 CSetChooserParUpdater _cset_updater; |
342 | 1587 |
1588 public: | |
1589 ParKnownGarbageHRClosure(CollectionSetChooser* hrSorted, | |
6011 | 1590 uint chunk_size) : |
6254
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6219
diff
changeset
|
1591 _g1h(G1CollectedHeap::heap()), |
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6219
diff
changeset
|
1592 _cset_updater(hrSorted, true /* parallel */, chunk_size) { } |
342 | 1593 |
1594 bool doHeapRegion(HeapRegion* r) { | |
1595 // Do we have any marking information for this region? | |
1596 if (r->is_marked()) { | |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1597 // 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
|
1598 // 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
|
1599 // before we fill them up). |
6254
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6219
diff
changeset
|
1600 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
|
1601 _cset_updater.add_region(r); |
342 | 1602 } |
1603 } | |
1604 return false; | |
1605 } | |
1606 }; | |
1607 | |
1608 class ParKnownGarbageTask: public AbstractGangTask { | |
1609 CollectionSetChooser* _hrSorted; | |
6011 | 1610 uint _chunk_size; |
342 | 1611 G1CollectedHeap* _g1; |
1612 public: | |
6011 | 1613 ParKnownGarbageTask(CollectionSetChooser* hrSorted, uint chunk_size) : |
342 | 1614 AbstractGangTask("ParKnownGarbageTask"), |
1615 _hrSorted(hrSorted), _chunk_size(chunk_size), | |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1616 _g1(G1CollectedHeap::heap()) { } |
342 | 1617 |
4728
441e946dc1af
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
4727
diff
changeset
|
1618 void work(uint worker_id) { |
6011 | 1619 ParKnownGarbageHRClosure parKnownGarbageCl(_hrSorted, _chunk_size); |
1620 | |
342 | 1621 // 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
|
1622 _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
|
1623 _g1->workers()->active_workers(), |
355 | 1624 HeapRegion::InitialClaimValue); |
342 | 1625 } |
1626 }; | |
1627 | |
1628 void | |
4095
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1629 G1CollectorPolicy::record_concurrent_mark_cleanup_end(int no_of_gc_threads) { |
6011 | 1630 _collectionSetChooser->clear(); |
4013 | 1631 |
20336
6701abbc4441
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
20292
diff
changeset
|
1632 uint region_num = _g1->num_regions(); |
1833
8b10f48633dc
6984287: Regularize how GC parallel workers are specified.
jmasa
parents:
1779
diff
changeset
|
1633 if (G1CollectedHeap::use_parallel_gc_threads()) { |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1634 const uint OverpartitionFactor = 4; |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1635 uint WorkUnit; |
4095
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1636 // The use of MinChunkSize = 8 in the original code |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1637 // causes some assertion failures when the total number of |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1638 // 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
|
1639 // Should the original code also be fixed? |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1640 if (no_of_gc_threads > 0) { |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1641 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
|
1642 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
|
1643 MinWorkUnit); |
4095
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1644 } else { |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1645 assert(no_of_gc_threads > 0, |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1646 "The active gc workers should be greater than 0"); |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1647 // 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
|
1648 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
|
1649 WorkUnit = |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1650 MAX2(region_num / (uint) (ParallelGCThreads * OverpartitionFactor), |
4095
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1651 MinWorkUnit); |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1652 } |
20336
6701abbc4441
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
20292
diff
changeset
|
1653 _collectionSetChooser->prepare_for_par_region_addition(_g1->num_regions(), |
6011 | 1654 WorkUnit); |
342 | 1655 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
|
1656 (int) WorkUnit); |
342 | 1657 _g1->workers()->run_task(&parKnownGarbageTask); |
355 | 1658 |
1659 assert(_g1->check_heap_region_claim_values(HeapRegion::InitialClaimValue), | |
1660 "sanity check"); | |
342 | 1661 } else { |
1662 KnownGarbageClosure knownGarbagecl(_collectionSetChooser); | |
1663 _g1->heap_region_iterate(&knownGarbagecl); | |
1664 } | |
4013 | 1665 |
6011 | 1666 _collectionSetChooser->sort_regions(); |
1667 | |
4013 | 1668 double end_sec = os::elapsedTime(); |
1669 double elapsed_time_ms = (end_sec - _mark_cleanup_start_sec) * 1000.0; | |
1670 _concurrent_mark_cleanup_times_ms->add(elapsed_time_ms); | |
1671 _cur_mark_stop_world_time_ms += elapsed_time_ms; | |
1672 _prev_collection_pause_end_ms += elapsed_time_ms; | |
1673 _mmu_tracker->add_pause(_mark_cleanup_start_sec, end_sec, true); | |
342 | 1674 } |
1675 | |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1676 // 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
|
1677 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
|
1678 assert(_inc_cset_build_state == Active, "Precondition"); |
20481
c02ec279b062
8057768: Make heap region region type in G1 HeapRegion explicit
brutisso
parents:
20336
diff
changeset
|
1679 assert(hr->is_old(), "the region should be old"); |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1680 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1681 assert(!hr->in_collection_set(), "should not already be in the CSet"); |
342 | 1682 hr->set_in_collection_set(true); |
1683 hr->set_next_in_collection_set(_collection_set); | |
1684 _collection_set = hr; | |
1685 _collection_set_bytes_used_before += hr->used(); | |
526 | 1686 _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
|
1687 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
|
1688 _recorded_rs_lengths += rs_length; |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1689 _old_cset_region_length += 1; |
342 | 1690 } |
1691 | |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1692 // 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
|
1693 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
|
1694 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
|
1695 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1696 _inc_cset_head = NULL; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1697 _inc_cset_tail = NULL; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1698 _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
|
1699 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1700 _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
|
1701 _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
|
1702 _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
|
1703 _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
|
1704 _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
|
1705 _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
|
1706 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1707 |
4727
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1708 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
|
1709 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
|
1710 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
|
1711 |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1712 // 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
|
1713 // _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
|
1714 // 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
|
1715 // 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
|
1716 // 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
|
1717 // the "main" fields. |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1718 |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1719 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
|
1720 _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
|
1721 } else { |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1722 // 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
|
1723 // 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
|
1724 // 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
|
1725 // 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
|
1726 // 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
|
1727 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
|
1728 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
|
1729 _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
|
1730 } else { |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1731 _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
|
1732 } |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1733 } |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1734 _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
|
1735 _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
|
1736 |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1737 _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
|
1738 _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
|
1739 } |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1740 |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1741 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
|
1742 // 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
|
1743 // * 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
|
1744 // evacuation pause, |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1745 // * 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
|
1746 // 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
|
1747 // * 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
|
1748 // 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
|
1749 // 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
|
1750 // 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
|
1751 // 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
|
1752 // refine thread (RSet sampling). |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1753 |
6611 | 1754 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
|
1755 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
|
1756 _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
|
1757 _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
|
1758 _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
|
1759 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1760 // 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
|
1761 // 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
|
1762 // 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
|
1763 // rset sampling code |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1764 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
|
1765 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
|
1766 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1767 |
4727
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1768 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
|
1769 size_t new_rs_length) { |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1770 // 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
|
1771 assert(hr->is_young(), "Precondition"); |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1772 assert(!SafepointSynchronize::is_at_safepoint(), |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1773 "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
|
1774 |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1775 // 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
|
1776 // _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
|
1777 // 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
|
1778 // 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
|
1779 // 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
|
1780 // 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
|
1781 // 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
|
1782 // 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
|
1783 |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1784 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
|
1785 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
|
1786 _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
|
1787 |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1788 double old_elapsed_time_ms = hr->predicted_elapsed_time_ms(); |
6611 | 1789 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
|
1790 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
|
1791 _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
|
1792 |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1793 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
|
1794 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
|
1795 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1796 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1797 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
|
1798 assert(hr->is_young(), "invariant"); |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1799 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
|
1800 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
|
1801 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1802 // 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
|
1803 // 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
|
1804 // 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
|
1805 // 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
|
1806 // 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
|
1807 // 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
|
1808 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1809 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
|
1810 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
|
1811 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1812 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
|
1813 _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
|
1814 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1815 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
|
1816 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
|
1817 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
|
1818 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1819 _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
|
1820 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1821 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1822 // 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
|
1823 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
|
1824 // We should only ever be appending survivors at the end of a pause |
20481
c02ec279b062
8057768: Make heap region region type in G1 HeapRegion explicit
brutisso
parents:
20336
diff
changeset
|
1825 assert(hr->is_survivor(), "Logic"); |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1826 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1827 // Do the 'common' stuff |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1828 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
|
1829 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1830 // 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
|
1831 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
|
1832 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
|
1833 _inc_cset_head = hr; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1834 } else { |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1835 _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
|
1836 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1837 _inc_cset_tail = hr; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1838 } |
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 // 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
|
1841 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
|
1842 // Survivors should be added to the RHS at the end of a pause |
20481
c02ec279b062
8057768: Make heap region region type in G1 HeapRegion explicit
brutisso
parents:
20336
diff
changeset
|
1843 assert(hr->is_eden(), "Logic"); |
1394
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 // Do the 'common' stuff |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1846 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
|
1847 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1848 // 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
|
1849 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
|
1850 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
|
1851 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
|
1852 _inc_cset_tail = hr; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1853 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1854 _inc_cset_head = hr; |
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 #ifndef PRODUCT |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1858 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
|
1859 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
|
1860 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1861 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
|
1862 HeapRegion* csr = list_head; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1863 while (csr != NULL) { |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1864 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
|
1865 assert(csr->in_collection_set(), "bad CS"); |
6027
8a2e5a6a19a4
7143490: G1: Remove HeapRegion::_top_at_conc_mark_count
johnc
parents:
6011
diff
changeset
|
1866 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
|
1867 HR_FORMAT_PARAMS(csr), |
8a2e5a6a19a4
7143490: G1: Remove HeapRegion::_top_at_conc_mark_count
johnc
parents:
6011
diff
changeset
|
1868 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
|
1869 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
|
1870 csr = next; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1871 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1872 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1873 #endif // !PRODUCT |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1874 |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1875 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
|
1876 // 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
|
1877 // 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
|
1878 // percentage of the current heap capacity. |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1879 size_t capacity_bytes = _g1->capacity(); |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1880 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
|
1881 } |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1882 |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1883 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
|
1884 const char* false_action_str) { |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1885 CollectionSetChooser* cset_chooser = _collectionSetChooser; |
6011 | 1886 if (cset_chooser->is_empty()) { |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1887 ergo_verbose0(ErgoMixedGCs, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1888 false_action_str, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1889 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
|
1890 return false; |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1891 } |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1892 |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1893 // Is the amount of uncollected reclaimable space above G1HeapWastePercent? |
6011 | 1894 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
|
1895 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
|
1896 double threshold = (double) G1HeapWastePercent; |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1897 if (reclaimable_perc <= threshold) { |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1898 ergo_verbose4(ErgoMixedGCs, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1899 false_action_str, |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1900 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
|
1901 ergo_format_region("candidate old regions") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1902 ergo_format_byte_perc("reclaimable") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1903 ergo_format_perc("threshold"), |
6011 | 1904 cset_chooser->remaining_regions(), |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1905 reclaimable_bytes, |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1906 reclaimable_perc, threshold); |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1907 return false; |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1908 } |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1909 |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1910 ergo_verbose4(ErgoMixedGCs, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1911 true_action_str, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1912 ergo_format_reason("candidate old regions available") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1913 ergo_format_region("candidate old regions") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1914 ergo_format_byte_perc("reclaimable") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1915 ergo_format_perc("threshold"), |
6011 | 1916 cset_chooser->remaining_regions(), |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1917 reclaimable_bytes, |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1918 reclaimable_perc, threshold); |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1919 return true; |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1920 } |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1921 |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1922 uint G1CollectorPolicy::calc_min_old_cset_length() { |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1923 // 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
|
1924 // 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
|
1925 // 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
|
1926 // 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
|
1927 // maximum desired number of mixed GCs. |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1928 // |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1929 // 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
|
1930 // 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
|
1931 // 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
|
1932 |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1933 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
|
1934 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
|
1935 size_t result = region_num / gc_num; |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1936 // emulate ceiling |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1937 if (result * gc_num < region_num) { |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1938 result += 1; |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1939 } |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1940 return (uint) result; |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1941 } |
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 uint G1CollectorPolicy::calc_max_old_cset_length() { |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1944 // 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
|
1945 // 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
|
1946 // 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
|
1947 // of them are available. |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1948 |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1949 G1CollectedHeap* g1h = G1CollectedHeap::heap(); |
20336
6701abbc4441
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
20292
diff
changeset
|
1950 const size_t region_num = g1h->num_regions(); |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1951 const size_t perc = (size_t) G1OldCSetRegionThresholdPercent; |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1952 size_t result = region_num * perc / 100; |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1953 // emulate ceiling |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1954 if (100 * result < region_num * perc) { |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1955 result += 1; |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1956 } |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1957 return (uint) result; |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1958 } |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1959 |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1960 |
10405 | 1961 void G1CollectorPolicy::finalize_cset(double target_pause_time_ms, EvacuationInfo& evacuation_info) { |
6611 | 1962 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
|
1963 |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1964 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
|
1965 finalize_incremental_cset_building(); |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1966 |
1656
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1967 guarantee(target_pause_time_ms > 0.0, |
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1968 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
|
1969 target_pause_time_ms)); |
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1970 guarantee(_collection_set == NULL, "Precondition"); |
342 | 1971 |
1972 double base_time_ms = predict_base_elapsed_time_ms(_pending_cards); | |
1973 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
|
1974 double time_remaining_ms = MAX2(target_pause_time_ms - base_time_ms, 0.0); |
342 | 1975 |
6611 | 1976 ergo_verbose4(ErgoCSetConstruction | ErgoHigh, |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1977 "start choosing CSet", |
6611 | 1978 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
|
1979 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
|
1980 ergo_format_ms("remaining time") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1981 ergo_format_ms("target pause time"), |
6611 | 1982 _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
|
1983 |
4710 | 1984 _last_gc_was_young = gcs_are_young() ? true : false; |
1985 | |
1986 if (_last_gc_was_young) { | |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
1987 _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
|
1988 } else { |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
1989 _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
|
1990 } |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1991 |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1992 // 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
|
1993 // 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
|
1994 // [Newly Young Regions ++ Survivors from last pause]. |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1995 |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1996 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
|
1997 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
|
1998 init_cset_region_lengths(eden_region_length, survivor_region_length); |
6611 | 1999 |
2000 HeapRegion* hr = young_list->first_survivor_region(); | |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2001 while (hr != NULL) { |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2002 assert(hr->is_survivor(), "badly formed young list"); |
20481
c02ec279b062
8057768: Make heap region region type in G1 HeapRegion explicit
brutisso
parents:
20336
diff
changeset
|
2003 // There is a convention that all the young regions in the CSet |
c02ec279b062
8057768: Make heap region region type in G1 HeapRegion explicit
brutisso
parents:
20336
diff
changeset
|
2004 // are tagged as "eden", so we do this for the survivors here. We |
c02ec279b062
8057768: Make heap region region type in G1 HeapRegion explicit
brutisso
parents:
20336
diff
changeset
|
2005 // use the special set_eden_pre_gc() as it doesn't check that the |
c02ec279b062
8057768: Make heap region region type in G1 HeapRegion explicit
brutisso
parents:
20336
diff
changeset
|
2006 // region is free (which is not the case here). |
c02ec279b062
8057768: Make heap region region type in G1 HeapRegion explicit
brutisso
parents:
20336
diff
changeset
|
2007 hr->set_eden_pre_gc(); |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2008 hr = hr->get_next_young_region(); |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2009 } |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2010 |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2011 // 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
|
2012 young_list->clear_survivors(); |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2013 |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2014 _collection_set = _inc_cset_head; |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2015 _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
|
2016 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
|
2017 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
|
2018 |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2019 ergo_verbose3(ErgoCSetConstruction | ErgoHigh, |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2020 "add young regions to CSet", |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2021 ergo_format_region("eden") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2022 ergo_format_region("survivors") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2023 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
|
2024 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
|
2025 _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
|
2026 |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2027 // The number of recorded young regions is the incremental |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2028 // collection set's current size |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2029 set_recorded_rs_lengths(_inc_cset_recorded_rs_lengths); |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2030 |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2031 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
|
2032 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
|
2033 |
6611 | 2034 // Set the start of the non-young choice time. |
2035 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
|
2036 |
4710 | 2037 if (!gcs_are_young()) { |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2038 CollectionSetChooser* cset_chooser = _collectionSetChooser; |
6011 | 2039 cset_chooser->verify(); |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2040 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
|
2041 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
|
2042 |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
2043 uint expensive_region_num = 0; |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2044 bool check_time_remaining = adaptive_young_list_length(); |
6611 | 2045 |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2046 HeapRegion* hr = cset_chooser->peek(); |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2047 while (hr != NULL) { |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2048 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
|
2049 // 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
|
2050 ergo_verbose2(ErgoCSetConstruction, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2051 "finish adding old regions to CSet", |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2052 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
|
2053 ergo_format_region("old") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2054 ergo_format_region("max"), |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2055 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
|
2056 break; |
342 | 2057 } |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2058 |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2059 |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2060 // 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
|
2061 // not above G1HeapWastePercent. |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2062 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
|
2063 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
|
2064 double threshold = (double) G1HeapWastePercent; |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2065 if (reclaimable_perc <= threshold) { |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2066 // 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
|
2067 // 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
|
2068 // adding old regions to the CSet. |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2069 ergo_verbose5(ErgoCSetConstruction, |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2070 "finish adding old regions to CSet", |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2071 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
|
2072 ergo_format_region("old") |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2073 ergo_format_region("max") |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2074 ergo_format_byte_perc("reclaimable") |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2075 ergo_format_perc("threshold"), |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2076 old_cset_region_length(), |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2077 max_old_cset_length, |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2078 reclaimable_bytes, |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2079 reclaimable_perc, threshold); |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2080 break; |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2081 } |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2082 |
6611 | 2083 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
|
2084 if (check_time_remaining) { |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2085 if (predicted_time_ms > time_remaining_ms) { |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2086 // Too expensive for the current CSet. |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2087 |
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 // 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
|
2090 // we are done with this CSet. |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2091 ergo_verbose4(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("predicted time is too high") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2094 ergo_format_ms("predicted time") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2095 ergo_format_ms("remaining time") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2096 ergo_format_region("old") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2097 ergo_format_region("min"), |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2098 predicted_time_ms, time_remaining_ms, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2099 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
|
2100 break; |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2101 } |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2102 |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2103 // 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
|
2104 // minimum number of old regions. |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2105 expensive_region_num += 1; |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2106 } |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2107 } else { |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2108 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
|
2109 // 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
|
2110 // 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
|
2111 ergo_verbose2(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("old CSet region num reached min") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2114 ergo_format_region("old") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2115 ergo_format_region("min"), |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2116 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
|
2117 break; |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2118 } |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2119 } |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2120 |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2121 // 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
|
2122 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
|
2123 predicted_pause_time_ms += predicted_time_ms; |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2124 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
|
2125 _g1->old_set_remove(hr); |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2126 add_old_region_to_cset(hr); |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2127 |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2128 hr = cset_chooser->peek(); |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2129 } |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2130 if (hr == NULL) { |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2131 ergo_verbose0(ErgoCSetConstruction, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2132 "finish adding old regions to CSet", |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2133 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
|
2134 } |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2135 |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2136 if (expensive_region_num > 0) { |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2137 // 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
|
2138 // 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
|
2139 // avoid generating output per region. |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2140 ergo_verbose4(ErgoCSetConstruction, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2141 "added expensive regions to CSet", |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2142 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
|
2143 ergo_format_region("old") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2144 ergo_format_region("expensive") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2145 ergo_format_region("min") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2146 ergo_format_ms("remaining time"), |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2147 old_cset_region_length(), |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2148 expensive_region_num, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2149 min_old_cset_length, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2150 time_remaining_ms); |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2151 } |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2152 |
6011 | 2153 cset_chooser->verify(); |
342 | 2154 } |
2155 | |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
2156 stop_incremental_cset_building(); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
2157 |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2158 ergo_verbose5(ErgoCSetConstruction, |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2159 "finish choosing CSet", |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2160 ergo_format_region("eden") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2161 ergo_format_region("survivors") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2162 ergo_format_region("old") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2163 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
|
2164 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
|
2165 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
|
2166 old_cset_region_length(), |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2167 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
|
2168 |
342 | 2169 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
|
2170 phase_times()->record_non_young_cset_choice_time_ms((non_young_end_time_sec - non_young_start_time_sec) * 1000.0); |
10405 | 2171 evacuation_info.set_collectionset_regions(cset_region_length()); |
342 | 2172 } |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2173 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2174 void TraceGen0TimeData::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
|
2175 if(TraceGen0Time) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2176 _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
|
2177 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2178 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2179 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2180 void TraceGen0TimeData::record_yield_time(double yield_time_ms) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2181 if(TraceGen0Time) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2182 _all_yield_times_ms.add(yield_time_ms); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2183 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2184 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2185 |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2186 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
|
2187 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
|
2188 _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
|
2189 _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
|
2190 _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
|
2191 _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
|
2192 _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
|
2193 _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
|
2194 _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
|
2195 _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
|
2196 _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
|
2197 _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
|
2198 |
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
|
2199 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
|
2200 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
|
2201 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
|
2202 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
|
2203 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
|
2204 + 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
|
2205 |
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
|
2206 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
|
2207 _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
|
2208 _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
|
2209 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2210 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2211 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2212 void TraceGen0TimeData::increment_young_collection_count() { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2213 if(TraceGen0Time) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2214 ++_young_pause_num; |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2215 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2216 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2217 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2218 void TraceGen0TimeData::increment_mixed_collection_count() { |
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 ++_mixed_pause_num; |
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 |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2224 void TraceGen0TimeData::print_summary(const char* str, |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2225 const NumberSeq* seq) const { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2226 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
|
2227 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
|
2228 str, sum / 1000.0, seq->avg()); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2229 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2230 |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2231 void TraceGen0TimeData::print_summary_sd(const char* str, |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2232 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
|
2233 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
|
2234 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
|
2235 "(num", seq->num(), seq->sd(), seq->maximum()); |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2236 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2237 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2238 void TraceGen0TimeData::print() const { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2239 if (!TraceGen0Time) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2240 return; |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2241 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2242 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2243 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
|
2244 print_summary_sd(" Total", &_total); |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17866
diff
changeset
|
2245 gclog_or_tty->cr(); |
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17866
diff
changeset
|
2246 gclog_or_tty->cr(); |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2247 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
|
2248 gclog_or_tty->print_cr(" Mixed GC Pauses: %8d", _mixed_pause_num); |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17866
diff
changeset
|
2249 gclog_or_tty->cr(); |
6109
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("EVACUATION PAUSES"); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2252 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2253 if (_young_pause_num == 0 && _mixed_pause_num == 0) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2254 gclog_or_tty->print_cr("none"); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2255 } else { |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2256 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
|
2257 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
|
2258 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
|
2259 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
|
2260 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
|
2261 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
|
2262 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
|
2263 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
|
2264 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
|
2265 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
|
2266 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
|
2267 print_summary(" Other", &_other); |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2268 } |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17866
diff
changeset
|
2269 gclog_or_tty->cr(); |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2270 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2271 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
|
2272 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
|
2273 print_summary_sd(" Yields", &_all_yield_times_ms); |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2274 } |
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 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
|
2277 if (TraceGen1Time) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2278 _all_full_gc_times.add(full_gc_time_ms); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2279 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2280 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2281 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2282 void TraceGen1TimeData::print() const { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2283 if (!TraceGen1Time) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2284 return; |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2285 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2286 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2287 if (_all_full_gc_times.num() > 0) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2288 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
|
2289 _all_full_gc_times.num(), |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2290 _all_full_gc_times.sum() / 1000.0); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2291 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
|
2292 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
|
2293 _all_full_gc_times.sd(), |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2294 _all_full_gc_times.maximum()); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2295 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2296 } |