Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp @ 17773:8ee855b4e667
8036025: Sort the freelist in order to shrink the heap
Summary: The free list is being maintained in a sorted fashion and old and humongous regions are allocated from the bottom of the heap while young regions are allocated at the top.
Reviewed-by: tschatzl, mgerdin
Contributed-by: jesper.wilhelmsson@oracle.com, staffan.friberg@oracle.com
author | jwilhelm |
---|---|
date | Fri, 28 Feb 2014 15:27:09 +0100 |
parents | 8f07aa079343 |
children | 284953caf7aa 270d7cb38f40 |
rev | line source |
---|---|
342 | 1 /* |
10098
71013d764f6e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
8681
diff
changeset
|
2 * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved. |
342 | 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 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "gc_implementation/g1/concurrentG1Refine.hpp" | |
27 #include "gc_implementation/g1/concurrentMark.hpp" | |
28 #include "gc_implementation/g1/concurrentMarkThread.inline.hpp" | |
29 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" | |
30 #include "gc_implementation/g1/g1CollectorPolicy.hpp" | |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
31 #include "gc_implementation/g1/g1ErgoVerbose.hpp" |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
32 #include "gc_implementation/g1/g1GCPhaseTimes.hpp" |
6007
5c86f8211d1e
7160728: Introduce an extra logging level for G1 logging
brutisso
parents:
5988
diff
changeset
|
33 #include "gc_implementation/g1/g1Log.hpp" |
1972 | 34 #include "gc_implementation/g1/heapRegionRemSet.hpp" |
35 #include "gc_implementation/shared/gcPolicyCounters.hpp" | |
36 #include "runtime/arguments.hpp" | |
37 #include "runtime/java.hpp" | |
38 #include "runtime/mutexLocker.hpp" | |
39 #include "utilities/debug.hpp" | |
342 | 40 |
41 // Different defaults for different number of GC threads | |
42 // They were chosen by running GCOld and SPECjbb on debris with different | |
43 // numbers of GC threads and choosing them based on the results | |
44 | |
45 // all the same | |
46 static double rs_length_diff_defaults[] = { | |
47 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 | |
48 }; | |
49 | |
50 static double cost_per_card_ms_defaults[] = { | |
51 0.01, 0.005, 0.005, 0.003, 0.003, 0.002, 0.002, 0.0015 | |
52 }; | |
53 | |
54 // all the same | |
4710 | 55 static double young_cards_per_entry_ratio_defaults[] = { |
342 | 56 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0 |
57 }; | |
58 | |
59 static double cost_per_entry_ms_defaults[] = { | |
60 0.015, 0.01, 0.01, 0.008, 0.008, 0.0055, 0.0055, 0.005 | |
61 }; | |
62 | |
63 static double cost_per_byte_ms_defaults[] = { | |
64 0.00006, 0.00003, 0.00003, 0.000015, 0.000015, 0.00001, 0.00001, 0.000009 | |
65 }; | |
66 | |
67 // these should be pretty consistent | |
68 static double constant_other_time_ms_defaults[] = { | |
69 5.0, 5.0, 5.0, 5.0, 5.0, 5.0, 5.0, 5.0 | |
70 }; | |
71 | |
72 | |
73 static double young_other_cost_per_region_ms_defaults[] = { | |
74 0.3, 0.2, 0.2, 0.15, 0.15, 0.12, 0.12, 0.1 | |
75 }; | |
76 | |
77 static double non_young_other_cost_per_region_ms_defaults[] = { | |
78 1.0, 0.7, 0.7, 0.5, 0.5, 0.42, 0.42, 0.30 | |
79 }; | |
80 | |
81 G1CollectorPolicy::G1CollectorPolicy() : | |
1833
8b10f48633dc
6984287: Regularize how GC parallel workers are specified.
jmasa
parents:
1779
diff
changeset
|
82 _parallel_gc_threads(G1CollectedHeap::use_parallel_gc_threads() |
3823
14a2fd14c0db
7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark
johnc
parents:
3778
diff
changeset
|
83 ? ParallelGCThreads : 1), |
1833
8b10f48633dc
6984287: Regularize how GC parallel workers are specified.
jmasa
parents:
1779
diff
changeset
|
84 |
342 | 85 _recent_gc_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)), |
86 _stop_world_start(0.0), | |
87 | |
88 _concurrent_mark_remark_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)), | |
89 _concurrent_mark_cleanup_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)), | |
90 | |
91 _alloc_rate_ms_seq(new TruncatedSeq(TruncatedSeqLength)), | |
92 _prev_collection_pause_end_ms(0.0), | |
93 _rs_length_diff_seq(new TruncatedSeq(TruncatedSeqLength)), | |
94 _cost_per_card_ms_seq(new TruncatedSeq(TruncatedSeqLength)), | |
4710 | 95 _young_cards_per_entry_ratio_seq(new TruncatedSeq(TruncatedSeqLength)), |
96 _mixed_cards_per_entry_ratio_seq(new TruncatedSeq(TruncatedSeqLength)), | |
342 | 97 _cost_per_entry_ms_seq(new TruncatedSeq(TruncatedSeqLength)), |
4710 | 98 _mixed_cost_per_entry_ms_seq(new TruncatedSeq(TruncatedSeqLength)), |
342 | 99 _cost_per_byte_ms_seq(new TruncatedSeq(TruncatedSeqLength)), |
100 _cost_per_byte_ms_during_cm_seq(new TruncatedSeq(TruncatedSeqLength)), | |
101 _constant_other_time_ms_seq(new TruncatedSeq(TruncatedSeqLength)), | |
102 _young_other_cost_per_region_ms_seq(new TruncatedSeq(TruncatedSeqLength)), | |
103 _non_young_other_cost_per_region_ms_seq( | |
104 new TruncatedSeq(TruncatedSeqLength)), | |
105 | |
106 _pending_cards_seq(new TruncatedSeq(TruncatedSeqLength)), | |
107 _rs_lengths_seq(new TruncatedSeq(TruncatedSeqLength)), | |
108 | |
751 | 109 _pause_time_target_ms((double) MaxGCPauseMillis), |
342 | 110 |
4710 | 111 _gcs_are_young(true), |
342 | 112 |
113 _during_marking(false), | |
114 _in_marking_window(false), | |
115 _in_marking_window_im(false), | |
116 | |
4710 | 117 _recent_prev_end_times_for_all_gcs_sec( |
118 new TruncatedSeq(NumPrevPausesForHeuristics)), | |
342 | 119 |
120 _recent_avg_pause_time_ratio(0.0), | |
121 | |
1359
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
122 _initiate_conc_mark_if_possible(false), |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
123 _during_initial_mark_pause(false), |
4710 | 124 _last_young_gc(false), |
125 _last_gc_was_young(false), | |
342 | 126 |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
127 _eden_used_bytes_before_gc(0), |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
128 _survivor_used_bytes_before_gc(0), |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
129 _heap_used_bytes_before_gc(0), |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
130 _metaspace_used_bytes_before_gc(0), |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
131 _eden_capacity_bytes_before_gc(0), |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
132 _heap_capacity_bytes_before_gc(0), |
3764
053d84a76d3d
7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions
tonyp
parents:
2430
diff
changeset
|
133 |
4090
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
134 _eden_cset_region_length(0), |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
135 _survivor_cset_region_length(0), |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
136 _old_cset_region_length(0), |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
137 |
342 | 138 _collection_set(NULL), |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
139 _collection_set_bytes_used_before(0), |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
140 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
141 // Incremental CSet attributes |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
142 _inc_cset_build_state(Inactive), |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
143 _inc_cset_head(NULL), |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
144 _inc_cset_tail(NULL), |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
145 _inc_cset_bytes_used_before(0), |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
146 _inc_cset_max_finger(NULL), |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
147 _inc_cset_recorded_rs_lengths(0), |
4727
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
148 _inc_cset_recorded_rs_lengths_diffs(0), |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
149 _inc_cset_predicted_elapsed_time_ms(0.0), |
4727
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
150 _inc_cset_predicted_elapsed_time_ms_diffs(0.0), |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
151 |
342 | 152 #ifdef _MSC_VER // the use of 'this' below gets a warning, make it go away |
153 #pragma warning( disable:4355 ) // 'this' : used in base member initializer list | |
154 #endif // _MSC_VER | |
155 | |
156 _short_lived_surv_rate_group(new SurvRateGroup(this, "Short Lived", | |
157 G1YoungSurvRateNumRegionsSummary)), | |
158 _survivor_surv_rate_group(new SurvRateGroup(this, "Survivor", | |
545 | 159 G1YoungSurvRateNumRegionsSummary)), |
342 | 160 // add here any more surv rate groups |
545 | 161 _recorded_survivor_regions(0), |
162 _recorded_survivor_head(NULL), | |
163 _recorded_survivor_tail(NULL), | |
1356 | 164 _survivors_age_table(true), |
165 | |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
166 _gc_overhead_perc(0.0) { |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
167 |
942
2c79770d1f6e
6819085: G1: use larger and/or user settable region size
tonyp
parents:
936
diff
changeset
|
168 // Set up the region size and associated fields. Given that the |
2c79770d1f6e
6819085: G1: use larger and/or user settable region size
tonyp
parents:
936
diff
changeset
|
169 // policy is created before the heap, we have to set this up here, |
2c79770d1f6e
6819085: G1: use larger and/or user settable region size
tonyp
parents:
936
diff
changeset
|
170 // so it's done as soon as possible. |
12178
84683e78e713
8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size
brutisso
parents:
12110
diff
changeset
|
171 |
84683e78e713
8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size
brutisso
parents:
12110
diff
changeset
|
172 // It would have been natural to pass initial_heap_byte_size() and |
84683e78e713
8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size
brutisso
parents:
12110
diff
changeset
|
173 // max_heap_byte_size() to setup_heap_region_size() but those have |
84683e78e713
8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size
brutisso
parents:
12110
diff
changeset
|
174 // not been set up at this point since they should be aligned with |
84683e78e713
8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size
brutisso
parents:
12110
diff
changeset
|
175 // the region size. So, there is a circular dependency here. We base |
84683e78e713
8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size
brutisso
parents:
12110
diff
changeset
|
176 // the region size on the heap size, but the heap size should be |
84683e78e713
8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size
brutisso
parents:
12110
diff
changeset
|
177 // aligned with the region size. To get around this we use the |
84683e78e713
8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size
brutisso
parents:
12110
diff
changeset
|
178 // unaligned values for the heap. |
84683e78e713
8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size
brutisso
parents:
12110
diff
changeset
|
179 HeapRegion::setup_heap_region_size(InitialHeapSize, MaxHeapSize); |
1261
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1111
diff
changeset
|
180 HeapRegionRemSet::setup_remset_size(); |
942
2c79770d1f6e
6819085: G1: use larger and/or user settable region size
tonyp
parents:
936
diff
changeset
|
181 |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
182 G1ErgoVerbose::initialize(); |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
183 if (PrintAdaptiveSizePolicy) { |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
184 // Currently, we only use a single switch for all the heuristics. |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
185 G1ErgoVerbose::set_enabled(true); |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
186 // Given that we don't currently have a verboseness level |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
187 // parameter, we'll hardcode this to high. This can be easily |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
188 // changed in the future. |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
189 G1ErgoVerbose::set_level(ErgoHigh); |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
190 } else { |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
191 G1ErgoVerbose::set_enabled(false); |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
192 } |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
193 |
1391
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1388
diff
changeset
|
194 // Verify PLAB sizes |
3986
65a8ff39a6da
7095194: G1: HeapRegion::GrainBytes, GrainWords, and CardsPerRegion should be size_t
johnc
parents:
3982
diff
changeset
|
195 const size_t region_size = HeapRegion::GrainWords; |
1391
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1388
diff
changeset
|
196 if (YoungPLABSize > region_size || OldPLABSize > region_size) { |
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1388
diff
changeset
|
197 char buffer[128]; |
3986
65a8ff39a6da
7095194: G1: HeapRegion::GrainBytes, GrainWords, and CardsPerRegion should be size_t
johnc
parents:
3982
diff
changeset
|
198 jio_snprintf(buffer, sizeof(buffer), "%sPLABSize should be at most "SIZE_FORMAT, |
1391
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1388
diff
changeset
|
199 OldPLABSize > region_size ? "Old" : "Young", region_size); |
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1388
diff
changeset
|
200 vm_exit_during_initialization(buffer); |
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1388
diff
changeset
|
201 } |
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1388
diff
changeset
|
202 |
342 | 203 _recent_prev_end_times_for_all_gcs_sec->add(os::elapsedTime()); |
204 _prev_collection_pause_end_ms = os::elapsedTime() * 1000.0; | |
205 | |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
206 _phase_times = new G1GCPhaseTimes(_parallel_gc_threads); |
342 | 207 |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
208 int index = MIN2(_parallel_gc_threads - 1, 7); |
342 | 209 |
210 _rs_length_diff_seq->add(rs_length_diff_defaults[index]); | |
211 _cost_per_card_ms_seq->add(cost_per_card_ms_defaults[index]); | |
4710 | 212 _young_cards_per_entry_ratio_seq->add( |
213 young_cards_per_entry_ratio_defaults[index]); | |
342 | 214 _cost_per_entry_ms_seq->add(cost_per_entry_ms_defaults[index]); |
215 _cost_per_byte_ms_seq->add(cost_per_byte_ms_defaults[index]); | |
216 _constant_other_time_ms_seq->add(constant_other_time_ms_defaults[index]); | |
217 _young_other_cost_per_region_ms_seq->add( | |
218 young_other_cost_per_region_ms_defaults[index]); | |
219 _non_young_other_cost_per_region_ms_seq->add( | |
220 non_young_other_cost_per_region_ms_defaults[index]); | |
221 | |
1610
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
222 // Below, we might need to calculate the pause time target based on |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
223 // the pause interval. When we do so we are going to give G1 maximum |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
224 // flexibility and allow it to do pauses when it needs to. So, we'll |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
225 // arrange that the pause interval to be pause time target + 1 to |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
226 // ensure that a) the pause time target is maximized with respect to |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
227 // the pause interval and b) we maintain the invariant that pause |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
228 // time target < pause interval. If the user does not want this |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
229 // maximum flexibility, they will have to set the pause interval |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
230 // explicitly. |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
231 |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
232 // First make sure that, if either parameter is set, its value is |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
233 // reasonable. |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
234 if (!FLAG_IS_DEFAULT(MaxGCPauseMillis)) { |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
235 if (MaxGCPauseMillis < 1) { |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
236 vm_exit_during_initialization("MaxGCPauseMillis should be " |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
237 "greater than 0"); |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
238 } |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
239 } |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
240 if (!FLAG_IS_DEFAULT(GCPauseIntervalMillis)) { |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
241 if (GCPauseIntervalMillis < 1) { |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
242 vm_exit_during_initialization("GCPauseIntervalMillis should be " |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
243 "greater than 0"); |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
244 } |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
245 } |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
246 |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
247 // Then, if the pause time target parameter was not set, set it to |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
248 // the default value. |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
249 if (FLAG_IS_DEFAULT(MaxGCPauseMillis)) { |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
250 if (FLAG_IS_DEFAULT(GCPauseIntervalMillis)) { |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
251 // The default pause time target in G1 is 200ms |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
252 FLAG_SET_DEFAULT(MaxGCPauseMillis, 200); |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
253 } else { |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
254 // We do not allow the pause interval to be set without the |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
255 // pause time target |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
256 vm_exit_during_initialization("GCPauseIntervalMillis cannot be set " |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
257 "without setting MaxGCPauseMillis"); |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
258 } |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
259 } |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
260 |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
261 // Then, if the interval parameter was not set, set it according to |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
262 // the pause time target (this will also deal with the case when the |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
263 // pause time target is the default value). |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
264 if (FLAG_IS_DEFAULT(GCPauseIntervalMillis)) { |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
265 FLAG_SET_DEFAULT(GCPauseIntervalMillis, MaxGCPauseMillis + 1); |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
266 } |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
267 |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
268 // Finally, make sure that the two parameters are consistent. |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
269 if (MaxGCPauseMillis >= GCPauseIntervalMillis) { |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
270 char buffer[256]; |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
271 jio_snprintf(buffer, 256, |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
272 "MaxGCPauseMillis (%u) should be less than " |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
273 "GCPauseIntervalMillis (%u)", |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
274 MaxGCPauseMillis, GCPauseIntervalMillis); |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
275 vm_exit_during_initialization(buffer); |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
276 } |
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
277 |
751 | 278 double max_gc_time = (double) MaxGCPauseMillis / 1000.0; |
1610
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1579
diff
changeset
|
279 double time_slice = (double) GCPauseIntervalMillis / 1000.0; |
342 | 280 _mmu_tracker = new G1MMUTrackerQueue(time_slice, max_gc_time); |
8094
f1fb03a251e9
8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED
poonam
parents:
7449
diff
changeset
|
281 |
f1fb03a251e9
8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED
poonam
parents:
7449
diff
changeset
|
282 uintx confidence_perc = G1ConfidencePercent; |
f1fb03a251e9
8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED
poonam
parents:
7449
diff
changeset
|
283 // Put an artificial ceiling on this so that it's not set to a silly value. |
f1fb03a251e9
8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED
poonam
parents:
7449
diff
changeset
|
284 if (confidence_perc > 100) { |
f1fb03a251e9
8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED
poonam
parents:
7449
diff
changeset
|
285 confidence_perc = 100; |
f1fb03a251e9
8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED
poonam
parents:
7449
diff
changeset
|
286 warning("G1ConfidencePercent is set to a value that is too large, " |
f1fb03a251e9
8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED
poonam
parents:
7449
diff
changeset
|
287 "it's been updated to %u", confidence_perc); |
f1fb03a251e9
8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED
poonam
parents:
7449
diff
changeset
|
288 } |
f1fb03a251e9
8008546: Wrong G1ConfidencePercent results in GUARANTEE(VARIANCE() > -1.0) FAILED
poonam
parents:
7449
diff
changeset
|
289 _sigma = (double) confidence_perc / 100.0; |
342 | 290 |
291 // start conservatively (around 50ms is about right) | |
292 _concurrent_mark_remark_times_ms->add(0.05); | |
293 _concurrent_mark_cleanup_times_ms->add(0.20); | |
294 _tenuring_threshold = MaxTenuringThreshold; | |
3868
ae73da50be4b
7081064: G1: remove develop params G1FixedSurvivorSpaceSize, G1FixedTenuringThreshold, and G1FixedEdenSize
tonyp
parents:
3867
diff
changeset
|
295 // _max_survivor_regions will be calculated by |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
296 // update_young_list_target_length() during initialization. |
3868
ae73da50be4b
7081064: G1: remove develop params G1FixedSurvivorSpaceSize, G1FixedTenuringThreshold, and G1FixedEdenSize
tonyp
parents:
3867
diff
changeset
|
297 _max_survivor_regions = 0; |
545 | 298 |
1356 | 299 assert(GCTimeRatio > 0, |
300 "we should have set it to a default value set_g1_gc_flags() " | |
301 "if a user set it to 0"); | |
302 _gc_overhead_perc = 100.0 * (1.0 / (1.0 + GCTimeRatio)); | |
303 | |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
304 uintx reserve_perc = G1ReservePercent; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
305 // Put an artificial ceiling on this so that it's not set to a silly value. |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
306 if (reserve_perc > 50) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
307 reserve_perc = 50; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
308 warning("G1ReservePercent is set to a value that is too large, " |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
309 "it's been updated to %u", reserve_perc); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
310 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
311 _reserve_factor = (double) reserve_perc / 100.0; |
3920
af2ab04e0038
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
3919
diff
changeset
|
312 // This will be set when the heap is expanded |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
313 // for the first time during initialization. |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
314 _reserve_regions = 0; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
315 |
4013 | 316 _collectionSetChooser = new CollectionSetChooser(); |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
317 } |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
318 |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
319 void G1CollectorPolicy::initialize_alignments() { |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
320 _space_alignment = HeapRegion::GrainBytes; |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
321 size_t card_table_alignment = GenRemSet::max_alignment_constraint(GenRemSet::CardTable); |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
322 size_t page_size = UseLargePages ? os::large_page_size() : os::vm_page_size(); |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
323 _heap_alignment = MAX3(card_table_alignment, _space_alignment, page_size); |
342 | 324 } |
325 | |
326 void G1CollectorPolicy::initialize_flags() { | |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
327 if (G1HeapRegionSize != HeapRegion::GrainBytes) { |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
328 FLAG_SET_ERGO(uintx, G1HeapRegionSize, HeapRegion::GrainBytes); |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
329 } |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
330 |
547
1e458753107d
6802413: G1: G1FixedSurvivorSpaceSize should be converted into regions in calculate_survivors_policy()
apetrusenko
parents:
545
diff
changeset
|
331 if (SurvivorRatio < 1) { |
1e458753107d
6802413: G1: G1FixedSurvivorSpaceSize should be converted into regions in calculate_survivors_policy()
apetrusenko
parents:
545
diff
changeset
|
332 vm_exit_during_initialization("Invalid survivor ratio specified"); |
1e458753107d
6802413: G1: G1FixedSurvivorSpaceSize should be converted into regions in calculate_survivors_policy()
apetrusenko
parents:
545
diff
changeset
|
333 } |
342 | 334 CollectorPolicy::initialize_flags(); |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
335 _young_gen_sizer = new G1YoungGenSizer(); // Must be after call to initialize_flags |
342 | 336 } |
337 | |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
338 void G1CollectorPolicy::post_heap_initialize() { |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
339 uintx max_regions = G1CollectedHeap::heap()->max_regions(); |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
340 size_t max_young_size = (size_t)_young_gen_sizer->max_young_length(max_regions) * HeapRegion::GrainBytes; |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
341 if (max_young_size != MaxNewSize) { |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
342 FLAG_SET_ERGO(uintx, MaxNewSize, max_young_size); |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
343 } |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
344 } |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
345 |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
346 G1YoungGenSizer::G1YoungGenSizer() : _sizer_kind(SizerDefaults), _adaptive_size(true), |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
347 _min_desired_young_length(0), _max_desired_young_length(0) { |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
348 if (FLAG_IS_CMDLINE(NewRatio)) { |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
349 if (FLAG_IS_CMDLINE(NewSize) || FLAG_IS_CMDLINE(MaxNewSize)) { |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
350 warning("-XX:NewSize and -XX:MaxNewSize override -XX:NewRatio"); |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
351 } else { |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
352 _sizer_kind = SizerNewRatio; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
353 _adaptive_size = false; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
354 return; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
355 } |
3976 | 356 } |
1285
a1c410de27e4
6928065: G1: use existing command line parameters to set the young generation size
tonyp
parents:
1283
diff
changeset
|
357 |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
358 if (NewSize > MaxNewSize) { |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
359 if (FLAG_IS_CMDLINE(MaxNewSize)) { |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
360 warning("NewSize (" SIZE_FORMAT "k) is greater than the MaxNewSize (" SIZE_FORMAT "k). " |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
361 "A new max generation size of " SIZE_FORMAT "k will be used.", |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
362 NewSize/K, MaxNewSize/K, NewSize/K); |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
363 } |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
364 MaxNewSize = NewSize; |
12894
24f32d09a0d7
8023643: G1 assert failed when NewSize was specified greater than MaxNewSize
jwilhelm
parents:
12830
diff
changeset
|
365 } |
24f32d09a0d7
8023643: G1 assert failed when NewSize was specified greater than MaxNewSize
jwilhelm
parents:
12830
diff
changeset
|
366 |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
367 if (FLAG_IS_CMDLINE(NewSize)) { |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
368 _min_desired_young_length = MAX2((uint) (NewSize / HeapRegion::GrainBytes), |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
369 1U); |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
370 if (FLAG_IS_CMDLINE(MaxNewSize)) { |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
371 _max_desired_young_length = |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
372 MAX2((uint) (MaxNewSize / HeapRegion::GrainBytes), |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
373 1U); |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
374 _sizer_kind = SizerMaxAndNewSize; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
375 _adaptive_size = _min_desired_young_length == _max_desired_young_length; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
376 } else { |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
377 _sizer_kind = SizerNewSizeOnly; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
378 } |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
379 } else if (FLAG_IS_CMDLINE(MaxNewSize)) { |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
380 _max_desired_young_length = |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
381 MAX2((uint) (MaxNewSize / HeapRegion::GrainBytes), |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
382 1U); |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
383 _sizer_kind = SizerMaxNewSizeOnly; |
1285
a1c410de27e4
6928065: G1: use existing command line parameters to set the young generation size
tonyp
parents:
1283
diff
changeset
|
384 } |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
385 } |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
386 |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
387 uint G1YoungGenSizer::calculate_default_min_length(uint new_number_of_heap_regions) { |
7449 | 388 uint default_value = (new_number_of_heap_regions * G1NewSizePercent) / 100; |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
389 return MAX2(1U, default_value); |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
390 } |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
391 |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
392 uint G1YoungGenSizer::calculate_default_max_length(uint new_number_of_heap_regions) { |
7449 | 393 uint default_value = (new_number_of_heap_regions * G1MaxNewSizePercent) / 100; |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
394 return MAX2(1U, default_value); |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
395 } |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
396 |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
397 void G1YoungGenSizer::recalculate_min_max_young_length(uint number_of_heap_regions, uint* min_young_length, uint* max_young_length) { |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
398 assert(number_of_heap_regions > 0, "Heap must be initialized"); |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
399 |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
400 switch (_sizer_kind) { |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
401 case SizerDefaults: |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
402 *min_young_length = calculate_default_min_length(number_of_heap_regions); |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
403 *max_young_length = calculate_default_max_length(number_of_heap_regions); |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
404 break; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
405 case SizerNewSizeOnly: |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
406 *max_young_length = calculate_default_max_length(number_of_heap_regions); |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
407 *max_young_length = MAX2(*min_young_length, *max_young_length); |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
408 break; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
409 case SizerMaxNewSizeOnly: |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
410 *min_young_length = calculate_default_min_length(number_of_heap_regions); |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
411 *min_young_length = MIN2(*min_young_length, *max_young_length); |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
412 break; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
413 case SizerMaxAndNewSize: |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
414 // Do nothing. Values set on the command line, don't update them at runtime. |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
415 break; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
416 case SizerNewRatio: |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
417 *min_young_length = number_of_heap_regions / (NewRatio + 1); |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
418 *max_young_length = *min_young_length; |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
419 break; |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
420 default: |
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
421 ShouldNotReachHere(); |
1285
a1c410de27e4
6928065: G1: use existing command line parameters to set the young generation size
tonyp
parents:
1283
diff
changeset
|
422 } |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
423 |
13060
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
424 assert(*min_young_length <= *max_young_length, "Invalid min/max young gen size values"); |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
425 } |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
426 |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
427 uint G1YoungGenSizer::max_young_length(uint number_of_heap_regions) { |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
428 // We need to pass the desired values because recalculation may not update these |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
429 // values in some cases. |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
430 uint temp = _min_desired_young_length; |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
431 uint result = _max_desired_young_length; |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
432 recalculate_min_max_young_length(number_of_heap_regions, &temp, &result); |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
433 return result; |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
434 } |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
435 |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
436 void G1YoungGenSizer::heap_size_changed(uint new_number_of_heap_regions) { |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
437 recalculate_min_max_young_length(new_number_of_heap_regions, &_min_desired_young_length, |
8f07aa079343
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
13057
diff
changeset
|
438 &_max_desired_young_length); |
3920
af2ab04e0038
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
3919
diff
changeset
|
439 } |
af2ab04e0038
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
3919
diff
changeset
|
440 |
342 | 441 void G1CollectorPolicy::init() { |
442 // Set aside an initial future to_space. | |
443 _g1 = G1CollectedHeap::heap(); | |
444 | |
445 assert(Heap_lock->owned_by_self(), "Locking discipline."); | |
446 | |
545 | 447 initialize_gc_policy_counters(); |
448 | |
3920
af2ab04e0038
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
3919
diff
changeset
|
449 if (adaptive_young_list_length()) { |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
450 _young_list_fixed_length = 0; |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
451 } else { |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
452 _young_list_fixed_length = _young_gen_sizer->min_desired_young_length(); |
342 | 453 } |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
454 _free_regions_at_end_of_collection = _g1->free_regions(); |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
455 update_young_list_target_length(); |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
456 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
457 // We may immediately start allocating regions and placing them on the |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
458 // collection set list. Initialize the per-collection set info |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
459 start_incremental_cset_building(); |
342 | 460 } |
461 | |
545 | 462 // Create the jstat counters for the policy. |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
463 void G1CollectorPolicy::initialize_gc_policy_counters() { |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
464 _gc_policy_counters = new GCPolicyCounters("GarbageFirst", 1, 3); |
545 | 465 } |
466 | |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
467 bool G1CollectorPolicy::predict_will_fit(uint young_length, |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
468 double base_time_ms, |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
469 uint base_free_regions, |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
470 double target_pause_time_ms) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
471 if (young_length >= base_free_regions) { |
342 | 472 // end condition 1: not enough space for the young regions |
473 return false; | |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
474 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
475 |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
476 double accum_surv_rate = accum_yg_surv_rate_pred((int) young_length - 1); |
342 | 477 size_t bytes_to_copy = |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
478 (size_t) (accum_surv_rate * (double) HeapRegion::GrainBytes); |
342 | 479 double copy_time_ms = predict_object_copy_time_ms(bytes_to_copy); |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
480 double young_other_time_ms = predict_young_other_time_ms(young_length); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
481 double pause_time_ms = base_time_ms + copy_time_ms + young_other_time_ms; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
482 if (pause_time_ms > target_pause_time_ms) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
483 // end condition 2: prediction is over the target pause time |
342 | 484 return false; |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
485 } |
342 | 486 |
487 size_t free_bytes = | |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
488 (base_free_regions - young_length) * HeapRegion::GrainBytes; |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
489 if ((2.0 * sigma()) * (double) bytes_to_copy > (double) free_bytes) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
490 // end condition 3: out-of-space (conservatively!) |
342 | 491 return false; |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
492 } |
342 | 493 |
494 // success! | |
495 return true; | |
496 } | |
497 | |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
498 void G1CollectorPolicy::record_new_heap_size(uint new_number_of_regions) { |
3920
af2ab04e0038
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
3919
diff
changeset
|
499 // re-calculate the necessary reserve |
af2ab04e0038
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
3919
diff
changeset
|
500 double reserve_regions_d = (double) new_number_of_regions * _reserve_factor; |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
501 // We use ceiling so that if reserve_regions_d is > 0.0 (but |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
502 // smaller than 1.0) we'll get 1. |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
503 _reserve_regions = (uint) ceil(reserve_regions_d); |
3920
af2ab04e0038
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
3919
diff
changeset
|
504 |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
505 _young_gen_sizer->heap_size_changed(new_number_of_regions); |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
506 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
507 |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
508 uint G1CollectorPolicy::calculate_young_list_desired_min_length( |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
509 uint base_min_length) { |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
510 uint desired_min_length = 0; |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
511 if (adaptive_young_list_length()) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
512 if (_alloc_rate_ms_seq->num() > 3) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
513 double now_sec = os::elapsedTime(); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
514 double when_ms = _mmu_tracker->when_max_gc_sec(now_sec) * 1000.0; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
515 double alloc_rate_ms = predict_alloc_rate_ms(); |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
516 desired_min_length = (uint) ceil(alloc_rate_ms * when_ms); |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
517 } else { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
518 // otherwise we don't have enough info to make the prediction |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
519 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
520 } |
3920
af2ab04e0038
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
3919
diff
changeset
|
521 desired_min_length += base_min_length; |
af2ab04e0038
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
3919
diff
changeset
|
522 // make sure we don't go below any user-defined minimum bound |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
523 return MAX2(_young_gen_sizer->min_desired_young_length(), desired_min_length); |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
524 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
525 |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
526 uint G1CollectorPolicy::calculate_young_list_desired_max_length() { |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
527 // Here, we might want to also take into account any additional |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
528 // constraints (i.e., user-defined minimum bound). Currently, we |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
529 // effectively don't set this bound. |
4729
1cbe7978b021
7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx
brutisso
parents:
4728
diff
changeset
|
530 return _young_gen_sizer->max_desired_young_length(); |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
531 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
532 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
533 void G1CollectorPolicy::update_young_list_target_length(size_t rs_lengths) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
534 if (rs_lengths == (size_t) -1) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
535 // if it's set to the default value (-1), we should predict it; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
536 // otherwise, use the given value. |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
537 rs_lengths = (size_t) get_new_prediction(_rs_lengths_seq); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
538 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
539 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
540 // Calculate the absolute and desired min bounds. |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
541 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
542 // This is how many young regions we already have (currently: the survivors). |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
543 uint base_min_length = recorded_survivor_regions(); |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
544 // This is the absolute minimum young length, which ensures that we |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
545 // can allocate one eden region in the worst-case. |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
546 uint absolute_min_length = base_min_length + 1; |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
547 uint desired_min_length = |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
548 calculate_young_list_desired_min_length(base_min_length); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
549 if (desired_min_length < absolute_min_length) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
550 desired_min_length = absolute_min_length; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
551 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
552 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
553 // Calculate the absolute and desired max bounds. |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
554 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
555 // We will try our best not to "eat" into the reserve. |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
556 uint absolute_max_length = 0; |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
557 if (_free_regions_at_end_of_collection > _reserve_regions) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
558 absolute_max_length = _free_regions_at_end_of_collection - _reserve_regions; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
559 } |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
560 uint desired_max_length = calculate_young_list_desired_max_length(); |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
561 if (desired_max_length > absolute_max_length) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
562 desired_max_length = absolute_max_length; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
563 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
564 |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
565 uint young_list_target_length = 0; |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
566 if (adaptive_young_list_length()) { |
4710 | 567 if (gcs_are_young()) { |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
568 young_list_target_length = |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
569 calculate_young_list_target_length(rs_lengths, |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
570 base_min_length, |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
571 desired_min_length, |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
572 desired_max_length); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
573 _rs_lengths_prediction = rs_lengths; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
574 } else { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
575 // Don't calculate anything and let the code below bound it to |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
576 // the desired_min_length, i.e., do the next GC as soon as |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
577 // possible to maximize how many old regions we can add to it. |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
578 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
579 } else { |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
580 // The user asked for a fixed young gen so we'll fix the young gen |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
581 // whether the next GC is young or mixed. |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
582 young_list_target_length = _young_list_fixed_length; |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
583 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
584 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
585 // Make sure we don't go over the desired max length, nor under the |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
586 // desired min length. In case they clash, desired_min_length wins |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
587 // which is why that test is second. |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
588 if (young_list_target_length > desired_max_length) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
589 young_list_target_length = desired_max_length; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
590 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
591 if (young_list_target_length < desired_min_length) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
592 young_list_target_length = desired_min_length; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
593 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
594 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
595 assert(young_list_target_length > recorded_survivor_regions(), |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
596 "we should be able to allocate at least one eden region"); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
597 assert(young_list_target_length >= absolute_min_length, "post-condition"); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
598 _young_list_target_length = young_list_target_length; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
599 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
600 update_max_gc_locker_expansion(); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
601 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
602 |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
603 uint |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
604 G1CollectorPolicy::calculate_young_list_target_length(size_t rs_lengths, |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
605 uint base_min_length, |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
606 uint desired_min_length, |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
607 uint desired_max_length) { |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
608 assert(adaptive_young_list_length(), "pre-condition"); |
4710 | 609 assert(gcs_are_young(), "only call this for young GCs"); |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
610 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
611 // In case some edge-condition makes the desired max length too small... |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
612 if (desired_max_length <= desired_min_length) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
613 return desired_min_length; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
614 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
615 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
616 // We'll adjust min_young_length and max_young_length not to include |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
617 // the already allocated young regions (i.e., so they reflect the |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
618 // min and max eden regions we'll allocate). The base_min_length |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
619 // will be reflected in the predictions by the |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
620 // survivor_regions_evac_time prediction. |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
621 assert(desired_min_length > base_min_length, "invariant"); |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
622 uint min_young_length = desired_min_length - base_min_length; |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
623 assert(desired_max_length > base_min_length, "invariant"); |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
624 uint max_young_length = desired_max_length - base_min_length; |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
625 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
626 double target_pause_time_ms = _mmu_tracker->max_gc_time() * 1000.0; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
627 double survivor_regions_evac_time = predict_survivor_regions_evac_time(); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
628 size_t pending_cards = (size_t) get_new_prediction(_pending_cards_seq); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
629 size_t adj_rs_lengths = rs_lengths + predict_rs_length_diff(); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
630 size_t scanned_cards = predict_young_card_num(adj_rs_lengths); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
631 double base_time_ms = |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
632 predict_base_elapsed_time_ms(pending_cards, scanned_cards) + |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
633 survivor_regions_evac_time; |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
634 uint available_free_regions = _free_regions_at_end_of_collection; |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
635 uint base_free_regions = 0; |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
636 if (available_free_regions > _reserve_regions) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
637 base_free_regions = available_free_regions - _reserve_regions; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
638 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
639 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
640 // Here, we will make sure that the shortest young length that |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
641 // makes sense fits within the target pause time. |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
642 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
643 if (predict_will_fit(min_young_length, base_time_ms, |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
644 base_free_regions, target_pause_time_ms)) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
645 // The shortest young length will fit into the target pause time; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
646 // we'll now check whether the absolute maximum number of young |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
647 // regions will fit in the target pause time. If not, we'll do |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
648 // a binary search between min_young_length and max_young_length. |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
649 if (predict_will_fit(max_young_length, base_time_ms, |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
650 base_free_regions, target_pause_time_ms)) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
651 // The maximum young length will fit into the target pause time. |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
652 // We are done so set min young length to the maximum length (as |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
653 // the result is assumed to be returned in min_young_length). |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
654 min_young_length = max_young_length; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
655 } else { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
656 // The maximum possible number of young regions will not fit within |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
657 // the target pause time so we'll search for the optimal |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
658 // length. The loop invariants are: |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
659 // |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
660 // min_young_length < max_young_length |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
661 // min_young_length is known to fit into the target pause time |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
662 // max_young_length is known not to fit into the target pause time |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
663 // |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
664 // Going into the loop we know the above hold as we've just |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
665 // checked them. Every time around the loop we check whether |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
666 // the middle value between min_young_length and |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
667 // max_young_length fits into the target pause time. If it |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
668 // does, it becomes the new min. If it doesn't, it becomes |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
669 // the new max. This way we maintain the loop invariants. |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
670 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
671 assert(min_young_length < max_young_length, "invariant"); |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
672 uint diff = (max_young_length - min_young_length) / 2; |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
673 while (diff > 0) { |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
674 uint young_length = min_young_length + diff; |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
675 if (predict_will_fit(young_length, base_time_ms, |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
676 base_free_regions, target_pause_time_ms)) { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
677 min_young_length = young_length; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
678 } else { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
679 max_young_length = young_length; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
680 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
681 assert(min_young_length < max_young_length, "invariant"); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
682 diff = (max_young_length - min_young_length) / 2; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
683 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
684 // The results is min_young_length which, according to the |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
685 // loop invariants, should fit within the target pause time. |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
686 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
687 // These are the post-conditions of the binary search above: |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
688 assert(min_young_length < max_young_length, |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
689 "otherwise we should have discovered that max_young_length " |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
690 "fits into the pause target and not done the binary search"); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
691 assert(predict_will_fit(min_young_length, base_time_ms, |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
692 base_free_regions, target_pause_time_ms), |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
693 "min_young_length, the result of the binary search, should " |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
694 "fit into the pause target"); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
695 assert(!predict_will_fit(min_young_length + 1, base_time_ms, |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
696 base_free_regions, target_pause_time_ms), |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
697 "min_young_length, the result of the binary search, should be " |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
698 "optimal, so no larger length should fit into the pause target"); |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
699 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
700 } else { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
701 // Even the minimum length doesn't fit into the pause time |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
702 // target, return it as the result nevertheless. |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
703 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
704 return base_min_length + min_young_length; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
705 } |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
706 |
545 | 707 double G1CollectorPolicy::predict_survivor_regions_evac_time() { |
708 double survivor_regions_evac_time = 0.0; | |
709 for (HeapRegion * r = _recorded_survivor_head; | |
710 r != NULL && r != _recorded_survivor_tail->get_next_young_region(); | |
711 r = r->get_next_young_region()) { | |
6611 | 712 survivor_regions_evac_time += predict_region_elapsed_time_ms(r, gcs_are_young()); |
545 | 713 } |
714 return survivor_regions_evac_time; | |
715 } | |
716 | |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
717 void G1CollectorPolicy::revise_young_list_target_length_if_necessary() { |
342 | 718 guarantee( adaptive_young_list_length(), "should not call this otherwise" ); |
719 | |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
720 size_t rs_lengths = _g1->young_list()->sampled_rs_lengths(); |
342 | 721 if (rs_lengths > _rs_lengths_prediction) { |
722 // add 10% to avoid having to recalculate often | |
723 size_t rs_lengths_prediction = rs_lengths * 1100 / 1000; | |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
724 update_young_list_target_length(rs_lengths_prediction); |
342 | 725 } |
726 } | |
727 | |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
728 |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
729 |
342 | 730 HeapWord* G1CollectorPolicy::mem_allocate_work(size_t size, |
731 bool is_tlab, | |
732 bool* gc_overhead_limit_was_exceeded) { | |
733 guarantee(false, "Not using this policy feature yet."); | |
734 return NULL; | |
735 } | |
736 | |
737 // This method controls how a collector handles one or more | |
738 // of its generations being fully allocated. | |
739 HeapWord* G1CollectorPolicy::satisfy_failed_allocation(size_t size, | |
740 bool is_tlab) { | |
741 guarantee(false, "Not using this policy feature yet."); | |
742 return NULL; | |
743 } | |
744 | |
745 | |
746 #ifndef PRODUCT | |
747 bool G1CollectorPolicy::verify_young_ages() { | |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
748 HeapRegion* head = _g1->young_list()->first_region(); |
342 | 749 return |
750 verify_young_ages(head, _short_lived_surv_rate_group); | |
751 // also call verify_young_ages on any additional surv rate groups | |
752 } | |
753 | |
754 bool | |
755 G1CollectorPolicy::verify_young_ages(HeapRegion* head, | |
756 SurvRateGroup *surv_rate_group) { | |
757 guarantee( surv_rate_group != NULL, "pre-condition" ); | |
758 | |
759 const char* name = surv_rate_group->name(); | |
760 bool ret = true; | |
761 int prev_age = -1; | |
762 | |
763 for (HeapRegion* curr = head; | |
764 curr != NULL; | |
765 curr = curr->get_next_young_region()) { | |
766 SurvRateGroup* group = curr->surv_rate_group(); | |
767 if (group == NULL && !curr->is_survivor()) { | |
768 gclog_or_tty->print_cr("## %s: encountered NULL surv_rate_group", name); | |
769 ret = false; | |
770 } | |
771 | |
772 if (surv_rate_group == group) { | |
773 int age = curr->age_in_surv_rate_group(); | |
774 | |
775 if (age < 0) { | |
776 gclog_or_tty->print_cr("## %s: encountered negative age", name); | |
777 ret = false; | |
778 } | |
779 | |
780 if (age <= prev_age) { | |
781 gclog_or_tty->print_cr("## %s: region ages are not strictly increasing " | |
782 "(%d, %d)", name, age, prev_age); | |
783 ret = false; | |
784 } | |
785 prev_age = age; | |
786 } | |
787 } | |
788 | |
789 return ret; | |
790 } | |
791 #endif // PRODUCT | |
792 | |
793 void G1CollectorPolicy::record_full_collection_start() { | |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
794 _full_collection_start_sec = os::elapsedTime(); |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
795 record_heap_size_info_at_start(true /* full */); |
342 | 796 // Release the future to-space so that it is available for compaction into. |
797 _g1->set_full_collection(); | |
798 } | |
799 | |
800 void G1CollectorPolicy::record_full_collection_end() { | |
801 // Consider this like a collection pause for the purposes of allocation | |
802 // since last pause. | |
803 double end_sec = os::elapsedTime(); | |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
804 double full_gc_time_sec = end_sec - _full_collection_start_sec; |
342 | 805 double full_gc_time_ms = full_gc_time_sec * 1000.0; |
806 | |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
807 _trace_gen1_time_data.record_full_collection(full_gc_time_ms); |
342 | 808 |
595
3698e8f47799
6804746: G1: guarantee(variance() > -1.0,"variance should be >= 0") (due to evacuation failure)
tonyp
parents:
547
diff
changeset
|
809 update_recent_gc_times(end_sec, full_gc_time_ms); |
342 | 810 |
811 _g1->clear_full_collection(); | |
812 | |
4710 | 813 // "Nuke" the heuristics that control the young/mixed GC |
814 // transitions and make sure we start with young GCs after the Full GC. | |
815 set_gcs_are_young(true); | |
816 _last_young_gc = false; | |
1359
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
817 clear_initiate_conc_mark_if_possible(); |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
818 clear_during_initial_mark_pause(); |
342 | 819 _in_marking_window = false; |
820 _in_marking_window_im = false; | |
821 | |
822 _short_lived_surv_rate_group->start_adding_regions(); | |
823 // also call this on any additional surv rate groups | |
824 | |
545 | 825 record_survivor_regions(0, NULL, NULL); |
826 | |
342 | 827 _free_regions_at_end_of_collection = _g1->free_regions(); |
545 | 828 // Reset survivors SurvRateGroup. |
829 _survivor_surv_rate_group->reset(); | |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
830 update_young_list_target_length(); |
6011 | 831 _collectionSetChooser->clear(); |
1973 | 832 } |
342 | 833 |
834 void G1CollectorPolicy::record_stop_world_start() { | |
835 _stop_world_start = os::elapsedTime(); | |
836 } | |
837 | |
10098
71013d764f6e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
8681
diff
changeset
|
838 void G1CollectorPolicy::record_collection_pause_start(double start_time_sec) { |
4837
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4834
diff
changeset
|
839 // We only need to do this here as the policy will only be applied |
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4834
diff
changeset
|
840 // to the GC we're about to start. so, no point is calculating this |
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4834
diff
changeset
|
841 // every time we calculate / recalculate the target young length. |
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4834
diff
changeset
|
842 update_survivors_policy(); |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
843 |
1973 | 844 assert(_g1->used() == _g1->recalculate_used(), |
845 err_msg("sanity, used: "SIZE_FORMAT" recalculate_used: "SIZE_FORMAT, | |
846 _g1->used(), _g1->recalculate_used())); | |
342 | 847 |
848 double s_w_t_ms = (start_time_sec - _stop_world_start) * 1000.0; | |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
849 _trace_gen0_time_data.record_start_collection(s_w_t_ms); |
342 | 850 _stop_world_start = 0.0; |
851 | |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
852 record_heap_size_info_at_start(false /* full */); |
10098
71013d764f6e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
8681
diff
changeset
|
853 |
6628
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
854 phase_times()->record_cur_collection_start_sec(start_time_sec); |
342 | 855 _pending_cards = _g1->pending_card_num(); |
856 | |
6611 | 857 _collection_set_bytes_used_before = 0; |
3830
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
858 _bytes_copied_during_gc = 0; |
342 | 859 |
4710 | 860 _last_gc_was_young = false; |
342 | 861 |
862 // do that for any other surv rate groups | |
863 _short_lived_surv_rate_group->stop_adding_regions(); | |
1282 | 864 _survivors_age_table.clear(); |
545 | 865 |
342 | 866 assert( verify_young_ages(), "region age verification" ); |
867 } | |
868 | |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
869 void G1CollectorPolicy::record_concurrent_mark_init_end(double |
342 | 870 mark_init_elapsed_time_ms) { |
871 _during_marking = true; | |
1359
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
872 assert(!initiate_conc_mark_if_possible(), "we should have cleared it by now"); |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
873 clear_during_initial_mark_pause(); |
342 | 874 _cur_mark_stop_world_time_ms = mark_init_elapsed_time_ms; |
875 } | |
876 | |
877 void G1CollectorPolicy::record_concurrent_mark_remark_start() { | |
878 _mark_remark_start_sec = os::elapsedTime(); | |
879 _during_marking = false; | |
880 } | |
881 | |
882 void G1CollectorPolicy::record_concurrent_mark_remark_end() { | |
883 double end_time_sec = os::elapsedTime(); | |
884 double elapsed_time_ms = (end_time_sec - _mark_remark_start_sec)*1000.0; | |
885 _concurrent_mark_remark_times_ms->add(elapsed_time_ms); | |
886 _cur_mark_stop_world_time_ms += elapsed_time_ms; | |
887 _prev_collection_pause_end_ms += elapsed_time_ms; | |
888 | |
889 _mmu_tracker->add_pause(_mark_remark_start_sec, end_time_sec, true); | |
890 } | |
891 | |
892 void G1CollectorPolicy::record_concurrent_mark_cleanup_start() { | |
893 _mark_cleanup_start_sec = os::elapsedTime(); | |
894 } | |
895 | |
4013 | 896 void G1CollectorPolicy::record_concurrent_mark_cleanup_completed() { |
4710 | 897 _last_young_gc = true; |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
898 _in_marking_window = false; |
342 | 899 } |
900 | |
901 void G1CollectorPolicy::record_concurrent_pause() { | |
902 if (_stop_world_start > 0.0) { | |
903 double yield_ms = (os::elapsedTime() - _stop_world_start) * 1000.0; | |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
904 _trace_gen0_time_data.record_yield_time(yield_ms); |
342 | 905 } |
906 } | |
907 | |
4834
6a78aa6ac1ff
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
4829
diff
changeset
|
908 bool G1CollectorPolicy::need_to_start_conc_mark(const char* source, size_t alloc_word_size) { |
6a78aa6ac1ff
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
4829
diff
changeset
|
909 if (_g1->concurrent_mark()->cmThread()->during_cycle()) { |
4829
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
910 return false; |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
911 } |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
912 |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
913 size_t marking_initiating_used_threshold = |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
914 (_g1->capacity() / 100) * InitiatingHeapOccupancyPercent; |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
915 size_t cur_used_bytes = _g1->non_young_capacity_bytes(); |
4834
6a78aa6ac1ff
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
4829
diff
changeset
|
916 size_t alloc_byte_size = alloc_word_size * HeapWordSize; |
6a78aa6ac1ff
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
4829
diff
changeset
|
917 |
6a78aa6ac1ff
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
4829
diff
changeset
|
918 if ((cur_used_bytes + alloc_byte_size) > marking_initiating_used_threshold) { |
11125
f4311079200c
8020155: PSR:PERF G1 not collecting old regions when humongous allocations interfer
brutisso
parents:
10405
diff
changeset
|
919 if (gcs_are_young() && !_last_young_gc) { |
4834
6a78aa6ac1ff
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
4829
diff
changeset
|
920 ergo_verbose5(ErgoConcCycles, |
4829
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
921 "request concurrent cycle initiation", |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
922 ergo_format_reason("occupancy higher than threshold") |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
923 ergo_format_byte("occupancy") |
4834
6a78aa6ac1ff
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
4829
diff
changeset
|
924 ergo_format_byte("allocation request") |
4829
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
925 ergo_format_byte_perc("threshold") |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
926 ergo_format_str("source"), |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
927 cur_used_bytes, |
4834
6a78aa6ac1ff
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
4829
diff
changeset
|
928 alloc_byte_size, |
4829
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
929 marking_initiating_used_threshold, |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
930 (double) InitiatingHeapOccupancyPercent, |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
931 source); |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
932 return true; |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
933 } else { |
4834
6a78aa6ac1ff
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
4829
diff
changeset
|
934 ergo_verbose5(ErgoConcCycles, |
4829
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
935 "do not request concurrent cycle initiation", |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
936 ergo_format_reason("still doing mixed collections") |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
937 ergo_format_byte("occupancy") |
4834
6a78aa6ac1ff
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
4829
diff
changeset
|
938 ergo_format_byte("allocation request") |
4829
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
939 ergo_format_byte_perc("threshold") |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
940 ergo_format_str("source"), |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
941 cur_used_bytes, |
4834
6a78aa6ac1ff
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
4829
diff
changeset
|
942 alloc_byte_size, |
4829
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
943 marking_initiating_used_threshold, |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
944 (double) InitiatingHeapOccupancyPercent, |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
945 source); |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
946 } |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
947 } |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
948 |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
949 return false; |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
950 } |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
951 |
342 | 952 // Anything below that is considered to be zero |
953 #define MIN_TIMER_GRANULARITY 0.0000001 | |
954 | |
10405 | 955 void G1CollectorPolicy::record_collection_pause_end(double pause_time_ms, EvacuationInfo& evacuation_info) { |
342 | 956 double end_time_sec = os::elapsedTime(); |
4090
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
957 assert(_cur_collection_pause_used_regions_at_start >= cset_region_length(), |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
958 "otherwise, the subtraction below does not make sense"); |
342 | 959 size_t rs_size = |
4090
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
960 _cur_collection_pause_used_regions_at_start - cset_region_length(); |
342 | 961 size_t cur_used_bytes = _g1->used(); |
962 assert(cur_used_bytes == _g1->recalculate_used(), "It should!"); | |
963 bool last_pause_included_initial_mark = false; | |
1707 | 964 bool update_stats = !_g1->evacuation_failed(); |
342 | 965 |
966 #ifndef PRODUCT | |
967 if (G1YoungSurvRateVerbose) { | |
968 gclog_or_tty->print_cr(""); | |
969 _short_lived_surv_rate_group->print(); | |
970 // do that for any other surv rate groups too | |
971 } | |
972 #endif // PRODUCT | |
973 | |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
974 last_pause_included_initial_mark = during_initial_mark_pause(); |
4829
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
975 if (last_pause_included_initial_mark) { |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
976 record_concurrent_mark_init_end(0.0); |
11125
f4311079200c
8020155: PSR:PERF G1 not collecting old regions when humongous allocations interfer
brutisso
parents:
10405
diff
changeset
|
977 } else if (need_to_start_conc_mark("end of GC")) { |
4829
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
978 // Note: this might have already been set, if during the last |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
979 // pause we decided to start a cycle but at the beginning of |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
980 // this pause we decided to postpone it. That's OK. |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
981 set_initiate_conc_mark_if_possible(); |
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
982 } |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
983 |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
984 _mmu_tracker->add_pause(end_time_sec - pause_time_ms/1000.0, |
342 | 985 end_time_sec, false); |
986 | |
10405 | 987 evacuation_info.set_collectionset_used_before(_collection_set_bytes_used_before); |
988 evacuation_info.set_bytes_copied(_bytes_copied_during_gc); | |
989 | |
595
3698e8f47799
6804746: G1: guarantee(variance() > -1.0,"variance should be >= 0") (due to evacuation failure)
tonyp
parents:
547
diff
changeset
|
990 if (update_stats) { |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
991 _trace_gen0_time_data.record_end_collection(pause_time_ms, phase_times()); |
342 | 992 // this is where we update the allocation rate of the application |
993 double app_time_ms = | |
6628
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
994 (phase_times()->cur_collection_start_sec() * 1000.0 - _prev_collection_pause_end_ms); |
342 | 995 if (app_time_ms < MIN_TIMER_GRANULARITY) { |
996 // This usually happens due to the timer not having the required | |
997 // granularity. Some Linuxes are the usual culprits. | |
998 // We'll just set it to something (arbitrarily) small. | |
999 app_time_ms = 1.0; | |
1000 } | |
4090
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1001 // We maintain the invariant that all objects allocated by mutator |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1002 // threads will be allocated out of eden regions. So, we can use |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1003 // the eden region number allocated since the previous GC to |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1004 // calculate the application's allocate rate. The only exception |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1005 // to that is humongous objects that are allocated separately. But |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1006 // given that humongous object allocations do not really affect |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1007 // either the pause's duration nor when the next pause will take |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1008 // place we can safely ignore them here. |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1009 uint regions_allocated = eden_cset_region_length(); |
342 | 1010 double alloc_rate_ms = (double) regions_allocated / app_time_ms; |
1011 _alloc_rate_ms_seq->add(alloc_rate_ms); | |
1012 | |
1013 double interval_ms = | |
1014 (end_time_sec - _recent_prev_end_times_for_all_gcs_sec->oldest()) * 1000.0; | |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
1015 update_recent_gc_times(end_time_sec, pause_time_ms); |
342 | 1016 _recent_avg_pause_time_ratio = _recent_gc_times_ms->sum()/interval_ms; |
1086
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1017 if (recent_avg_pause_time_ratio() < 0.0 || |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1018 (recent_avg_pause_time_ratio() - 1.0 > 0.0)) { |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1019 #ifndef PRODUCT |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1020 // Dump info to allow post-facto debugging |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1021 gclog_or_tty->print_cr("recent_avg_pause_time_ratio() out of bounds"); |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1022 gclog_or_tty->print_cr("-------------------------------------------"); |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1023 gclog_or_tty->print_cr("Recent GC Times (ms):"); |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1024 _recent_gc_times_ms->dump(); |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1025 gclog_or_tty->print_cr("(End Time=%3.3f) Recent GC End Times (s):", end_time_sec); |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1026 _recent_prev_end_times_for_all_gcs_sec->dump(); |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1027 gclog_or_tty->print_cr("GC = %3.3f, Interval = %3.3f, Ratio = %3.3f", |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1028 _recent_gc_times_ms->sum(), interval_ms, recent_avg_pause_time_ratio()); |
1087
23b9a8d315fc
6902701: G1: protect debugging code related to 6898948 with a debug flag
ysr
parents:
1086
diff
changeset
|
1029 // In debug mode, terminate the JVM if the user wants to debug at this point. |
23b9a8d315fc
6902701: G1: protect debugging code related to 6898948 with a debug flag
ysr
parents:
1086
diff
changeset
|
1030 assert(!G1FailOnFPError, "Debugging data for CR 6898948 has been dumped above"); |
23b9a8d315fc
6902701: G1: protect debugging code related to 6898948 with a debug flag
ysr
parents:
1086
diff
changeset
|
1031 #endif // !PRODUCT |
23b9a8d315fc
6902701: G1: protect debugging code related to 6898948 with a debug flag
ysr
parents:
1086
diff
changeset
|
1032 // Clip ratio between 0.0 and 1.0, and continue. This will be fixed in |
23b9a8d315fc
6902701: G1: protect debugging code related to 6898948 with a debug flag
ysr
parents:
1086
diff
changeset
|
1033 // CR 6902692 by redoing the manner in which the ratio is incrementally computed. |
1086
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1034 if (_recent_avg_pause_time_ratio < 0.0) { |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1035 _recent_avg_pause_time_ratio = 0.0; |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1036 } else { |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1037 assert(_recent_avg_pause_time_ratio - 1.0 > 0.0, "Ctl-point invariant"); |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1038 _recent_avg_pause_time_ratio = 1.0; |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1039 } |
89f1b9ae8991
6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
ysr
parents:
1043
diff
changeset
|
1040 } |
342 | 1041 } |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1042 |
342 | 1043 bool new_in_marking_window = _in_marking_window; |
1044 bool new_in_marking_window_im = false; | |
1359
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1045 if (during_initial_mark_pause()) { |
342 | 1046 new_in_marking_window = true; |
1047 new_in_marking_window_im = true; | |
1048 } | |
1049 | |
4710 | 1050 if (_last_young_gc) { |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1051 // This is supposed to to be the "last young GC" before we start |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1052 // doing mixed GCs. Here we decide whether to start mixed GCs or not. |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1053 |
3982
273b46400613
7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835
johnc
parents:
3979
diff
changeset
|
1054 if (!last_pause_included_initial_mark) { |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1055 if (next_gc_should_be_mixed("start mixed GCs", |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1056 "do not start mixed GCs")) { |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1057 set_gcs_are_young(false); |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1058 } |
3982
273b46400613
7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835
johnc
parents:
3979
diff
changeset
|
1059 } else { |
4710 | 1060 ergo_verbose0(ErgoMixedGCs, |
1061 "do not start mixed GCs", | |
3982
273b46400613
7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835
johnc
parents:
3979
diff
changeset
|
1062 ergo_format_reason("concurrent cycle is about to start")); |
273b46400613
7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835
johnc
parents:
3979
diff
changeset
|
1063 } |
4710 | 1064 _last_young_gc = false; |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1065 } |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1066 |
4710 | 1067 if (!_last_gc_was_young) { |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1068 // This is a mixed GC. Here we decide whether to continue doing |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1069 // mixed GCs or not. |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1070 |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1071 if (!next_gc_should_be_mixed("continue mixed GCs", |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1072 "do not continue mixed GCs")) { |
4710 | 1073 set_gcs_are_young(true); |
342 | 1074 } |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1075 } |
4710 | 1076 |
342 | 1077 _short_lived_surv_rate_group->start_adding_regions(); |
1078 // do that for any other surv rate groupsx | |
1079 | |
677 | 1080 if (update_stats) { |
342 | 1081 double cost_per_card_ms = 0.0; |
1082 if (_pending_cards > 0) { | |
6628
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
1083 cost_per_card_ms = phase_times()->average_last_update_rs_time() / (double) _pending_cards; |
342 | 1084 _cost_per_card_ms_seq->add(cost_per_card_ms); |
1085 } | |
1086 | |
1087 size_t cards_scanned = _g1->cards_scanned(); | |
1088 | |
1089 double cost_per_entry_ms = 0.0; | |
1090 if (cards_scanned > 10) { | |
6628
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
1091 cost_per_entry_ms = phase_times()->average_last_scan_rs_time() / (double) cards_scanned; |
4710 | 1092 if (_last_gc_was_young) { |
342 | 1093 _cost_per_entry_ms_seq->add(cost_per_entry_ms); |
4710 | 1094 } else { |
1095 _mixed_cost_per_entry_ms_seq->add(cost_per_entry_ms); | |
1096 } | |
342 | 1097 } |
1098 | |
1099 if (_max_rs_lengths > 0) { | |
1100 double cards_per_entry_ratio = | |
1101 (double) cards_scanned / (double) _max_rs_lengths; | |
4710 | 1102 if (_last_gc_was_young) { |
1103 _young_cards_per_entry_ratio_seq->add(cards_per_entry_ratio); | |
1104 } else { | |
1105 _mixed_cards_per_entry_ratio_seq->add(cards_per_entry_ratio); | |
1106 } | |
342 | 1107 } |
1108 | |
4727
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1109 // This is defensive. For a while _max_rs_lengths could get |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1110 // smaller than _recorded_rs_lengths which was causing |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1111 // rs_length_diff to get very large and mess up the RSet length |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1112 // predictions. The reason was unsafe concurrent updates to the |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1113 // _inc_cset_recorded_rs_lengths field which the code below guards |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1114 // against (see CR 7118202). This bug has now been fixed (see CR |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1115 // 7119027). However, I'm still worried that |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1116 // _inc_cset_recorded_rs_lengths might still end up somewhat |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1117 // inaccurate. The concurrent refinement thread calculates an |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1118 // RSet's length concurrently with other CR threads updating it |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1119 // which might cause it to calculate the length incorrectly (if, |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1120 // say, it's in mid-coarsening). So I'll leave in the defensive |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1121 // conditional below just in case. |
4130
d23d2b18183e
7118202: G1: eden size unnecessarily drops to a minimum
tonyp
parents:
4097
diff
changeset
|
1122 size_t rs_length_diff = 0; |
d23d2b18183e
7118202: G1: eden size unnecessarily drops to a minimum
tonyp
parents:
4097
diff
changeset
|
1123 if (_max_rs_lengths > _recorded_rs_lengths) { |
d23d2b18183e
7118202: G1: eden size unnecessarily drops to a minimum
tonyp
parents:
4097
diff
changeset
|
1124 rs_length_diff = _max_rs_lengths - _recorded_rs_lengths; |
d23d2b18183e
7118202: G1: eden size unnecessarily drops to a minimum
tonyp
parents:
4097
diff
changeset
|
1125 } |
d23d2b18183e
7118202: G1: eden size unnecessarily drops to a minimum
tonyp
parents:
4097
diff
changeset
|
1126 _rs_length_diff_seq->add((double) rs_length_diff); |
342 | 1127 |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1128 size_t freed_bytes = _heap_used_bytes_before_gc - cur_used_bytes; |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1129 size_t copied_bytes = _collection_set_bytes_used_before - freed_bytes; |
342 | 1130 double cost_per_byte_ms = 0.0; |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1131 |
342 | 1132 if (copied_bytes > 0) { |
6628
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
1133 cost_per_byte_ms = phase_times()->average_last_obj_copy_time() / (double) copied_bytes; |
4710 | 1134 if (_in_marking_window) { |
342 | 1135 _cost_per_byte_ms_during_cm_seq->add(cost_per_byte_ms); |
4710 | 1136 } else { |
342 | 1137 _cost_per_byte_ms_seq->add(cost_per_byte_ms); |
4710 | 1138 } |
342 | 1139 } |
1140 | |
1141 double all_other_time_ms = pause_time_ms - | |
6628
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
1142 (phase_times()->average_last_update_rs_time() + phase_times()->average_last_scan_rs_time() |
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
1143 + phase_times()->average_last_obj_copy_time() + phase_times()->average_last_termination_time()); |
342 | 1144 |
1145 double young_other_time_ms = 0.0; | |
4090
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1146 if (young_cset_region_length() > 0) { |
342 | 1147 young_other_time_ms = |
6628
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
1148 phase_times()->young_cset_choice_time_ms() + |
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
1149 phase_times()->young_free_cset_time_ms(); |
342 | 1150 _young_other_cost_per_region_ms_seq->add(young_other_time_ms / |
4090
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1151 (double) young_cset_region_length()); |
342 | 1152 } |
1153 double non_young_other_time_ms = 0.0; | |
4090
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1154 if (old_cset_region_length() > 0) { |
342 | 1155 non_young_other_time_ms = |
6628
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
1156 phase_times()->non_young_cset_choice_time_ms() + |
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
1157 phase_times()->non_young_free_cset_time_ms(); |
342 | 1158 |
1159 _non_young_other_cost_per_region_ms_seq->add(non_young_other_time_ms / | |
4090
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1160 (double) old_cset_region_length()); |
342 | 1161 } |
1162 | |
1163 double constant_other_time_ms = all_other_time_ms - | |
1164 (young_other_time_ms + non_young_other_time_ms); | |
1165 _constant_other_time_ms_seq->add(constant_other_time_ms); | |
1166 | |
1167 double survival_ratio = 0.0; | |
6611 | 1168 if (_collection_set_bytes_used_before > 0) { |
3830
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
1169 survival_ratio = (double) _bytes_copied_during_gc / |
6611 | 1170 (double) _collection_set_bytes_used_before; |
342 | 1171 } |
1172 | |
1173 _pending_cards_seq->add((double) _pending_cards); | |
1174 _rs_lengths_seq->add((double) _max_rs_lengths); | |
1175 } | |
1176 | |
1177 _in_marking_window = new_in_marking_window; | |
1178 _in_marking_window_im = new_in_marking_window_im; | |
1179 _free_regions_at_end_of_collection = _g1->free_regions(); | |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
1180 update_young_list_target_length(); |
342 | 1181 |
1111 | 1182 // Note that _mmu_tracker->max_gc_time() returns the time in seconds. |
1282 | 1183 double update_rs_time_goal_ms = _mmu_tracker->max_gc_time() * MILLIUNITS * G1RSetUpdatingPauseTimePercent / 100.0; |
6628
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
1184 adjust_concurrent_refinement(phase_times()->average_last_update_rs_time(), |
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
1185 phase_times()->sum_last_update_rs_processed_buffers(), update_rs_time_goal_ms); |
4013 | 1186 |
6011 | 1187 _collectionSetChooser->verify(); |
342 | 1188 } |
1189 | |
6059 | 1190 #define EXT_SIZE_FORMAT "%.1f%s" |
3764
053d84a76d3d
7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions
tonyp
parents:
2430
diff
changeset
|
1191 #define EXT_SIZE_PARAMS(bytes) \ |
6059 | 1192 byte_size_in_proper_unit((double)(bytes)), \ |
3764
053d84a76d3d
7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions
tonyp
parents:
2430
diff
changeset
|
1193 proper_unit_for_byte_size((bytes)) |
053d84a76d3d
7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions
tonyp
parents:
2430
diff
changeset
|
1194 |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1195 void G1CollectorPolicy::record_heap_size_info_at_start(bool full) { |
10098
71013d764f6e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
8681
diff
changeset
|
1196 YoungList* young_list = _g1->young_list(); |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1197 _eden_used_bytes_before_gc = young_list->eden_used_bytes(); |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1198 _survivor_used_bytes_before_gc = young_list->survivor_used_bytes(); |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1199 _heap_capacity_bytes_before_gc = _g1->capacity(); |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1200 _heap_used_bytes_before_gc = _g1->used(); |
10098
71013d764f6e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
8681
diff
changeset
|
1201 _cur_collection_pause_used_regions_at_start = _g1->used_regions(); |
71013d764f6e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
8681
diff
changeset
|
1202 |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1203 _eden_capacity_bytes_before_gc = |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1204 (_young_list_target_length * HeapRegion::GrainBytes) - _survivor_used_bytes_before_gc; |
10098
71013d764f6e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
8681
diff
changeset
|
1205 |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1206 if (full) { |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1207 _metaspace_used_bytes_before_gc = MetaspaceAux::allocated_used_bytes(); |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1208 } |
10098
71013d764f6e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
8681
diff
changeset
|
1209 } |
71013d764f6e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
8681
diff
changeset
|
1210 |
3764
053d84a76d3d
7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions
tonyp
parents:
2430
diff
changeset
|
1211 void G1CollectorPolicy::print_heap_transition() { |
6628
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
1212 _g1->print_size_transition(gclog_or_tty, |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1213 _heap_used_bytes_before_gc, |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1214 _g1->used(), |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1215 _g1->capacity()); |
6628
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
1216 } |
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
1217 |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1218 void G1CollectorPolicy::print_detailed_heap_transition(bool full) { |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1219 YoungList* young_list = _g1->young_list(); |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1220 |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1221 size_t eden_used_bytes_after_gc = young_list->eden_used_bytes(); |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1222 size_t survivor_used_bytes_after_gc = young_list->survivor_used_bytes(); |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1223 size_t heap_used_bytes_after_gc = _g1->used(); |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1224 |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1225 size_t heap_capacity_bytes_after_gc = _g1->capacity(); |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1226 size_t eden_capacity_bytes_after_gc = |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1227 (_young_list_target_length * HeapRegion::GrainBytes) - survivor_used_bytes_after_gc; |
3764
053d84a76d3d
7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions
tonyp
parents:
2430
diff
changeset
|
1228 |
10291
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1229 gclog_or_tty->print( |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1230 " [Eden: "EXT_SIZE_FORMAT"("EXT_SIZE_FORMAT")->"EXT_SIZE_FORMAT"("EXT_SIZE_FORMAT") " |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1231 "Survivors: "EXT_SIZE_FORMAT"->"EXT_SIZE_FORMAT" " |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1232 "Heap: "EXT_SIZE_FORMAT"("EXT_SIZE_FORMAT")->" |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1233 EXT_SIZE_FORMAT"("EXT_SIZE_FORMAT")]", |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1234 EXT_SIZE_PARAMS(_eden_used_bytes_before_gc), |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1235 EXT_SIZE_PARAMS(_eden_capacity_bytes_before_gc), |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1236 EXT_SIZE_PARAMS(eden_used_bytes_after_gc), |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1237 EXT_SIZE_PARAMS(eden_capacity_bytes_after_gc), |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1238 EXT_SIZE_PARAMS(_survivor_used_bytes_before_gc), |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1239 EXT_SIZE_PARAMS(survivor_used_bytes_after_gc), |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1240 EXT_SIZE_PARAMS(_heap_used_bytes_before_gc), |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1241 EXT_SIZE_PARAMS(_heap_capacity_bytes_before_gc), |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1242 EXT_SIZE_PARAMS(heap_used_bytes_after_gc), |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1243 EXT_SIZE_PARAMS(heap_capacity_bytes_after_gc)); |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1244 |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1245 if (full) { |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1246 MetaspaceAux::print_metaspace_change(_metaspace_used_bytes_before_gc); |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1247 } |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1248 |
48391ab0687e
8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen size/meta data change info
johnc
parents:
10239
diff
changeset
|
1249 gclog_or_tty->cr(); |
3764
053d84a76d3d
7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions
tonyp
parents:
2430
diff
changeset
|
1250 } |
053d84a76d3d
7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions
tonyp
parents:
2430
diff
changeset
|
1251 |
1111 | 1252 void G1CollectorPolicy::adjust_concurrent_refinement(double update_rs_time, |
1253 double update_rs_processed_buffers, | |
1254 double goal_ms) { | |
1255 DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set(); | |
1256 ConcurrentG1Refine *cg1r = G1CollectedHeap::heap()->concurrent_g1_refine(); | |
1257 | |
1282 | 1258 if (G1UseAdaptiveConcRefinement) { |
1111 | 1259 const int k_gy = 3, k_gr = 6; |
1260 const double inc_k = 1.1, dec_k = 0.9; | |
1261 | |
1262 int g = cg1r->green_zone(); | |
1263 if (update_rs_time > goal_ms) { | |
1264 g = (int)(g * dec_k); // Can become 0, that's OK. That would mean a mutator-only processing. | |
1265 } else { | |
1266 if (update_rs_time < goal_ms && update_rs_processed_buffers > g) { | |
1267 g = (int)MAX2(g * inc_k, g + 1.0); | |
1268 } | |
1269 } | |
1270 // Change the refinement threads params | |
1271 cg1r->set_green_zone(g); | |
1272 cg1r->set_yellow_zone(g * k_gy); | |
1273 cg1r->set_red_zone(g * k_gr); | |
1274 cg1r->reinitialize_threads(); | |
1275 | |
1276 int processing_threshold_delta = MAX2((int)(cg1r->green_zone() * sigma()), 1); | |
1277 int processing_threshold = MIN2(cg1r->green_zone() + processing_threshold_delta, | |
1278 cg1r->yellow_zone()); | |
1279 // Change the barrier params | |
1280 dcqs.set_process_completed_threshold(processing_threshold); | |
1281 dcqs.set_max_completed_queue(cg1r->red_zone()); | |
1282 } | |
1283 | |
1284 int curr_queue_size = dcqs.completed_buffers_num(); | |
1285 if (curr_queue_size >= cg1r->yellow_zone()) { | |
1286 dcqs.set_completed_queue_padding(curr_queue_size); | |
1287 } else { | |
1288 dcqs.set_completed_queue_padding(0); | |
1289 } | |
1290 dcqs.notify_if_necessary(); | |
1291 } | |
1292 | |
342 | 1293 double |
1294 G1CollectorPolicy::predict_base_elapsed_time_ms(size_t pending_cards, | |
1295 size_t scanned_cards) { | |
1296 return | |
1297 predict_rs_update_time_ms(pending_cards) + | |
1298 predict_rs_scan_time_ms(scanned_cards) + | |
1299 predict_constant_other_time_ms(); | |
1300 } | |
1301 | |
1302 double | |
6611 | 1303 G1CollectorPolicy::predict_base_elapsed_time_ms(size_t pending_cards) { |
1304 size_t rs_length = predict_rs_length_diff(); | |
342 | 1305 size_t card_num; |
4710 | 1306 if (gcs_are_young()) { |
342 | 1307 card_num = predict_young_card_num(rs_length); |
4710 | 1308 } else { |
342 | 1309 card_num = predict_non_young_card_num(rs_length); |
4710 | 1310 } |
6611 | 1311 return predict_base_elapsed_time_ms(pending_cards, card_num); |
342 | 1312 } |
1313 | |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1314 size_t G1CollectorPolicy::predict_bytes_to_copy(HeapRegion* hr) { |
342 | 1315 size_t bytes_to_copy; |
1316 if (hr->is_marked()) | |
1317 bytes_to_copy = hr->max_live_bytes(); | |
1318 else { | |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1319 assert(hr->is_young() && hr->age_in_surv_rate_group() != -1, "invariant"); |
342 | 1320 int age = hr->age_in_surv_rate_group(); |
545 | 1321 double yg_surv_rate = predict_yg_surv_rate(age, hr->surv_rate_group()); |
342 | 1322 bytes_to_copy = (size_t) ((double) hr->used() * yg_surv_rate); |
1323 } | |
1324 return bytes_to_copy; | |
1325 } | |
1326 | |
6611 | 1327 double |
1328 G1CollectorPolicy::predict_region_elapsed_time_ms(HeapRegion* hr, | |
1329 bool for_young_gc) { | |
1330 size_t rs_length = hr->rem_set()->occupied(); | |
1331 size_t card_num; | |
1332 | |
1333 // Predicting the number of cards is based on which type of GC | |
1334 // we're predicting for. | |
1335 if (for_young_gc) { | |
1336 card_num = predict_young_card_num(rs_length); | |
1337 } else { | |
1338 card_num = predict_non_young_card_num(rs_length); | |
1339 } | |
1340 size_t bytes_to_copy = predict_bytes_to_copy(hr); | |
1341 | |
1342 double region_elapsed_time_ms = | |
1343 predict_rs_scan_time_ms(card_num) + | |
1344 predict_object_copy_time_ms(bytes_to_copy); | |
1345 | |
1346 // The prediction of the "other" time for this region is based | |
1347 // upon the region type and NOT the GC type. | |
1348 if (hr->is_young()) { | |
1349 region_elapsed_time_ms += predict_young_other_time_ms(1); | |
1350 } else { | |
1351 region_elapsed_time_ms += predict_non_young_other_time_ms(1); | |
1352 } | |
1353 return region_elapsed_time_ms; | |
1354 } | |
1355 | |
342 | 1356 void |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1357 G1CollectorPolicy::init_cset_region_lengths(uint eden_cset_region_length, |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1358 uint survivor_cset_region_length) { |
4090
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1359 _eden_cset_region_length = eden_cset_region_length; |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1360 _survivor_cset_region_length = survivor_cset_region_length; |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1361 _old_cset_region_length = 0; |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1362 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1363 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1364 void G1CollectorPolicy::set_recorded_rs_lengths(size_t rs_lengths) { |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1365 _recorded_rs_lengths = rs_lengths; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1366 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1367 |
342 | 1368 void G1CollectorPolicy::update_recent_gc_times(double end_time_sec, |
1369 double elapsed_ms) { | |
1370 _recent_gc_times_ms->add(elapsed_ms); | |
1371 _recent_prev_end_times_for_all_gcs_sec->add(end_time_sec); | |
1372 _prev_collection_pause_end_ms = end_time_sec * 1000.0; | |
1373 } | |
1374 | |
1375 size_t G1CollectorPolicy::expansion_amount() { | |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1376 double recent_gc_overhead = recent_avg_pause_time_ratio() * 100.0; |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1377 double threshold = _gc_overhead_perc; |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1378 if (recent_gc_overhead > threshold) { |
751 | 1379 // We will double the existing space, or take |
1380 // G1ExpandByPercentOfAvailable % of the available expansion | |
1381 // space, whichever is smaller, bounded below by a minimum | |
1382 // expansion (unless that's all that's left.) | |
342 | 1383 const size_t min_expand_bytes = 1*M; |
2188
c33825b68624
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
2152
diff
changeset
|
1384 size_t reserved_bytes = _g1->max_capacity(); |
342 | 1385 size_t committed_bytes = _g1->capacity(); |
1386 size_t uncommitted_bytes = reserved_bytes - committed_bytes; | |
1387 size_t expand_bytes; | |
1388 size_t expand_bytes_via_pct = | |
751 | 1389 uncommitted_bytes * G1ExpandByPercentOfAvailable / 100; |
342 | 1390 expand_bytes = MIN2(expand_bytes_via_pct, committed_bytes); |
1391 expand_bytes = MAX2(expand_bytes, min_expand_bytes); | |
1392 expand_bytes = MIN2(expand_bytes, uncommitted_bytes); | |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1393 |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1394 ergo_verbose5(ErgoHeapSizing, |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1395 "attempt heap expansion", |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1396 ergo_format_reason("recent GC overhead higher than " |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1397 "threshold after GC") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1398 ergo_format_perc("recent GC overhead") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1399 ergo_format_perc("threshold") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1400 ergo_format_byte("uncommitted") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1401 ergo_format_byte_perc("calculated expansion amount"), |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1402 recent_gc_overhead, threshold, |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1403 uncommitted_bytes, |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1404 expand_bytes_via_pct, (double) G1ExpandByPercentOfAvailable); |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1405 |
342 | 1406 return expand_bytes; |
1407 } else { | |
1408 return 0; | |
1409 } | |
1410 } | |
1411 | |
1412 void G1CollectorPolicy::print_tracing_info() const { | |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
1413 _trace_gen0_time_data.print(); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
1414 _trace_gen1_time_data.print(); |
342 | 1415 } |
1416 | |
1417 void G1CollectorPolicy::print_yg_surv_rate_info() const { | |
1418 #ifndef PRODUCT | |
1419 _short_lived_surv_rate_group->print_surv_rate_summary(); | |
1420 // add this call for any other surv rate groups | |
1421 #endif // PRODUCT | |
1422 } | |
1423 | |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1424 uint G1CollectorPolicy::max_regions(int purpose) { |
342 | 1425 switch (purpose) { |
1426 case GCAllocForSurvived: | |
545 | 1427 return _max_survivor_regions; |
342 | 1428 case GCAllocForTenured: |
545 | 1429 return REGIONS_UNLIMITED; |
342 | 1430 default: |
545 | 1431 ShouldNotReachHere(); |
1432 return REGIONS_UNLIMITED; | |
342 | 1433 }; |
1434 } | |
1435 | |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
1436 void G1CollectorPolicy::update_max_gc_locker_expansion() { |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1437 uint expansion_region_num = 0; |
1991
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1973
diff
changeset
|
1438 if (GCLockerEdenExpansionPercent > 0) { |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1973
diff
changeset
|
1439 double perc = (double) GCLockerEdenExpansionPercent / 100.0; |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1973
diff
changeset
|
1440 double expansion_region_num_d = perc * (double) _young_list_target_length; |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1973
diff
changeset
|
1441 // We use ceiling so that if expansion_region_num_d is > 0.0 (but |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1973
diff
changeset
|
1442 // less than 1.0) we'll get 1. |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1443 expansion_region_num = (uint) ceil(expansion_region_num_d); |
1991
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1973
diff
changeset
|
1444 } else { |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1973
diff
changeset
|
1445 assert(expansion_region_num == 0, "sanity"); |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1973
diff
changeset
|
1446 } |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1973
diff
changeset
|
1447 _young_list_max_length = _young_list_target_length + expansion_region_num; |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1973
diff
changeset
|
1448 assert(_young_list_target_length <= _young_list_max_length, "post-condition"); |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1973
diff
changeset
|
1449 } |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1973
diff
changeset
|
1450 |
545 | 1451 // Calculates survivor space parameters. |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
1452 void G1CollectorPolicy::update_survivors_policy() { |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
1453 double max_survivor_regions_d = |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
1454 (double) _young_list_target_length / (double) SurvivorRatio; |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
1455 // We use ceiling so that if max_survivor_regions_d is > 0.0 (but |
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
1456 // smaller than 1.0) we'll get 1. |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1457 _max_survivor_regions = (uint) ceil(max_survivor_regions_d); |
3919
4f41766176cf
7084509: G1: fix inconsistencies and mistakes in the young list target length calculations
tonyp
parents:
3914
diff
changeset
|
1458 |
3868
ae73da50be4b
7081064: G1: remove develop params G1FixedSurvivorSpaceSize, G1FixedTenuringThreshold, and G1FixedEdenSize
tonyp
parents:
3867
diff
changeset
|
1459 _tenuring_threshold = _survivors_age_table.compute_tenuring_threshold( |
545 | 1460 HeapRegion::GrainWords * _max_survivor_regions); |
1461 } | |
1462 | |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1463 bool G1CollectorPolicy::force_initial_mark_if_outside_cycle( |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1464 GCCause::Cause gc_cause) { |
1656
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1465 bool during_cycle = _g1->concurrent_mark()->cmThread()->during_cycle(); |
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1466 if (!during_cycle) { |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1467 ergo_verbose1(ErgoConcCycles, |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1468 "request concurrent cycle initiation", |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1469 ergo_format_reason("requested by GC cause") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1470 ergo_format_str("GC cause"), |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1471 GCCause::to_string(gc_cause)); |
1656
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1472 set_initiate_conc_mark_if_possible(); |
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1473 return true; |
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1474 } else { |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1475 ergo_verbose1(ErgoConcCycles, |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1476 "do not request concurrent cycle initiation", |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1477 ergo_format_reason("concurrent cycle already in progress") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1478 ergo_format_str("GC cause"), |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1479 GCCause::to_string(gc_cause)); |
1656
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1480 return false; |
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1481 } |
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1482 } |
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1483 |
342 | 1484 void |
1359
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1485 G1CollectorPolicy::decide_on_conc_mark_initiation() { |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1486 // We are about to decide on whether this pause will be an |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1487 // initial-mark pause. |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1488 |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1489 // First, during_initial_mark_pause() should not be already set. We |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1490 // will set it here if we have to. However, it should be cleared by |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1491 // the end of the pause (it's only set for the duration of an |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1492 // initial-mark pause). |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1493 assert(!during_initial_mark_pause(), "pre-condition"); |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1494 |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1495 if (initiate_conc_mark_if_possible()) { |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1496 // We had noticed on a previous pause that the heap occupancy has |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1497 // gone over the initiating threshold and we should start a |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1498 // concurrent marking cycle. So we might initiate one. |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1499 |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1500 bool during_cycle = _g1->concurrent_mark()->cmThread()->during_cycle(); |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1501 if (!during_cycle) { |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1502 // The concurrent marking thread is not "during a cycle", i.e., |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1503 // it has completed the last one. So we can go ahead and |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1504 // initiate a new cycle. |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1505 |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1506 set_during_initial_mark_pause(); |
4710 | 1507 // We do not allow mixed GCs during marking. |
1508 if (!gcs_are_young()) { | |
1509 set_gcs_are_young(true); | |
1510 ergo_verbose0(ErgoMixedGCs, | |
1511 "end mixed GCs", | |
3982
273b46400613
7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835
johnc
parents:
3979
diff
changeset
|
1512 ergo_format_reason("concurrent cycle is about to start")); |
273b46400613
7086533: G1: assert(!_g1->is_obj_dead(obj)): We should not be preserving dead objs: g1CollectedHeap.cpp:3835
johnc
parents:
3979
diff
changeset
|
1513 } |
1359
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1514 |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1515 // And we can now clear initiate_conc_mark_if_possible() as |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1516 // we've already acted on it. |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1517 clear_initiate_conc_mark_if_possible(); |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1518 |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1519 ergo_verbose0(ErgoConcCycles, |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1520 "initiate concurrent cycle", |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1521 ergo_format_reason("concurrent cycle initiation requested")); |
1359
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1522 } else { |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1523 // The concurrent marking thread is still finishing up the |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1524 // previous cycle. If we start one right now the two cycles |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1525 // overlap. In particular, the concurrent marking thread might |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1526 // be in the process of clearing the next marking bitmap (which |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1527 // we will use for the next cycle if we start one). Starting a |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1528 // cycle now will be bad given that parts of the marking |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1529 // information might get cleared by the marking thread. And we |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1530 // cannot wait for the marking thread to finish the cycle as it |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1531 // periodically yields while clearing the next marking bitmap |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1532 // and, if it's in a yield point, it's waiting for us to |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1533 // finish. So, at this point we will not start a cycle and we'll |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1534 // let the concurrent marking thread complete the last one. |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1535 ergo_verbose0(ErgoConcCycles, |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1536 "do not initiate concurrent cycle", |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1537 ergo_format_reason("concurrent cycle already in progress")); |
1359
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1538 } |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1539 } |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1540 } |
23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
1356
diff
changeset
|
1541 |
342 | 1542 class KnownGarbageClosure: public HeapRegionClosure { |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1543 G1CollectedHeap* _g1h; |
342 | 1544 CollectionSetChooser* _hrSorted; |
1545 | |
1546 public: | |
1547 KnownGarbageClosure(CollectionSetChooser* hrSorted) : | |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1548 _g1h(G1CollectedHeap::heap()), _hrSorted(hrSorted) { } |
342 | 1549 |
1550 bool doHeapRegion(HeapRegion* r) { | |
1551 // We only include humongous regions in collection | |
1552 // sets when concurrent mark shows that their contained object is | |
1553 // unreachable. | |
1554 | |
1555 // Do we have any marking information for this region? | |
1556 if (r->is_marked()) { | |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1557 // We will skip any region that's currently used as an old GC |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1558 // alloc region (we should not consider those for collection |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1559 // before we fill them up). |
6011 | 1560 if (_hrSorted->should_add(r) && !_g1h->is_old_gc_alloc_region(r)) { |
1561 _hrSorted->add_region(r); | |
342 | 1562 } |
1563 } | |
1564 return false; | |
1565 } | |
1566 }; | |
1567 | |
1568 class ParKnownGarbageHRClosure: public HeapRegionClosure { | |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1569 G1CollectedHeap* _g1h; |
6254
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6219
diff
changeset
|
1570 CSetChooserParUpdater _cset_updater; |
342 | 1571 |
1572 public: | |
1573 ParKnownGarbageHRClosure(CollectionSetChooser* hrSorted, | |
6011 | 1574 uint chunk_size) : |
6254
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6219
diff
changeset
|
1575 _g1h(G1CollectedHeap::heap()), |
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6219
diff
changeset
|
1576 _cset_updater(hrSorted, true /* parallel */, chunk_size) { } |
342 | 1577 |
1578 bool doHeapRegion(HeapRegion* r) { | |
1579 // Do we have any marking information for this region? | |
1580 if (r->is_marked()) { | |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1581 // We will skip any region that's currently used as an old GC |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1582 // alloc region (we should not consider those for collection |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1583 // before we fill them up). |
6254
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6219
diff
changeset
|
1584 if (_cset_updater.should_add(r) && !_g1h->is_old_gc_alloc_region(r)) { |
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6219
diff
changeset
|
1585 _cset_updater.add_region(r); |
342 | 1586 } |
1587 } | |
1588 return false; | |
1589 } | |
1590 }; | |
1591 | |
1592 class ParKnownGarbageTask: public AbstractGangTask { | |
1593 CollectionSetChooser* _hrSorted; | |
6011 | 1594 uint _chunk_size; |
342 | 1595 G1CollectedHeap* _g1; |
1596 public: | |
6011 | 1597 ParKnownGarbageTask(CollectionSetChooser* hrSorted, uint chunk_size) : |
342 | 1598 AbstractGangTask("ParKnownGarbageTask"), |
1599 _hrSorted(hrSorted), _chunk_size(chunk_size), | |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1600 _g1(G1CollectedHeap::heap()) { } |
342 | 1601 |
4728
441e946dc1af
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
4727
diff
changeset
|
1602 void work(uint worker_id) { |
6011 | 1603 ParKnownGarbageHRClosure parKnownGarbageCl(_hrSorted, _chunk_size); |
1604 | |
342 | 1605 // Back to zero for the claim value. |
4728
441e946dc1af
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
4727
diff
changeset
|
1606 _g1->heap_region_par_iterate_chunked(&parKnownGarbageCl, worker_id, |
4095
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1607 _g1->workers()->active_workers(), |
355 | 1608 HeapRegion::InitialClaimValue); |
342 | 1609 } |
1610 }; | |
1611 | |
1612 void | |
4095
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1613 G1CollectorPolicy::record_concurrent_mark_cleanup_end(int no_of_gc_threads) { |
6011 | 1614 _collectionSetChooser->clear(); |
4013 | 1615 |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1616 uint region_num = _g1->n_regions(); |
1833
8b10f48633dc
6984287: Regularize how GC parallel workers are specified.
jmasa
parents:
1779
diff
changeset
|
1617 if (G1CollectedHeap::use_parallel_gc_threads()) { |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1618 const uint OverpartitionFactor = 4; |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1619 uint WorkUnit; |
4095
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1620 // The use of MinChunkSize = 8 in the original code |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1621 // causes some assertion failures when the total number of |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1622 // region is less than 8. The code here tries to fix that. |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1623 // Should the original code also be fixed? |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1624 if (no_of_gc_threads > 0) { |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1625 const uint MinWorkUnit = MAX2(region_num / no_of_gc_threads, 1U); |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1626 WorkUnit = MAX2(region_num / (no_of_gc_threads * OverpartitionFactor), |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1627 MinWorkUnit); |
4095
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1628 } else { |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1629 assert(no_of_gc_threads > 0, |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1630 "The active gc workers should be greater than 0"); |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1631 // In a product build do something reasonable to avoid a crash. |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1632 const uint MinWorkUnit = MAX2(region_num / (uint) ParallelGCThreads, 1U); |
4095
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1633 WorkUnit = |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1634 MAX2(region_num / (uint) (ParallelGCThreads * OverpartitionFactor), |
4095
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1635 MinWorkUnit); |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1636 } |
6011 | 1637 _collectionSetChooser->prepare_for_par_region_addition(_g1->n_regions(), |
1638 WorkUnit); | |
342 | 1639 ParKnownGarbageTask parKnownGarbageTask(_collectionSetChooser, |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1394
diff
changeset
|
1640 (int) WorkUnit); |
342 | 1641 _g1->workers()->run_task(&parKnownGarbageTask); |
355 | 1642 |
1643 assert(_g1->check_heap_region_claim_values(HeapRegion::InitialClaimValue), | |
1644 "sanity check"); | |
342 | 1645 } else { |
1646 KnownGarbageClosure knownGarbagecl(_collectionSetChooser); | |
1647 _g1->heap_region_iterate(&knownGarbagecl); | |
1648 } | |
4013 | 1649 |
6011 | 1650 _collectionSetChooser->sort_regions(); |
1651 | |
4013 | 1652 double end_sec = os::elapsedTime(); |
1653 double elapsed_time_ms = (end_sec - _mark_cleanup_start_sec) * 1000.0; | |
1654 _concurrent_mark_cleanup_times_ms->add(elapsed_time_ms); | |
1655 _cur_mark_stop_world_time_ms += elapsed_time_ms; | |
1656 _prev_collection_pause_end_ms += elapsed_time_ms; | |
1657 _mmu_tracker->add_pause(_mark_cleanup_start_sec, end_sec, true); | |
342 | 1658 } |
1659 | |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1660 // Add the heap region at the head of the non-incremental collection set |
4090
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1661 void G1CollectorPolicy::add_old_region_to_cset(HeapRegion* hr) { |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1662 assert(_inc_cset_build_state == Active, "Precondition"); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1663 assert(!hr->is_young(), "non-incremental add of young region"); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1664 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1665 assert(!hr->in_collection_set(), "should not already be in the CSet"); |
342 | 1666 hr->set_in_collection_set(true); |
1667 hr->set_next_in_collection_set(_collection_set); | |
1668 _collection_set = hr; | |
1669 _collection_set_bytes_used_before += hr->used(); | |
526 | 1670 _g1->register_region_with_in_cset_fast_test(hr); |
4090
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1671 size_t rs_length = hr->rem_set()->occupied(); |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1672 _recorded_rs_lengths += rs_length; |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1673 _old_cset_region_length += 1; |
342 | 1674 } |
1675 | |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1676 // Initialize the per-collection-set information |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1677 void G1CollectorPolicy::start_incremental_cset_building() { |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1678 assert(_inc_cset_build_state == Inactive, "Precondition"); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1679 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1680 _inc_cset_head = NULL; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1681 _inc_cset_tail = NULL; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1682 _inc_cset_bytes_used_before = 0; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1683 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1684 _inc_cset_max_finger = 0; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1685 _inc_cset_recorded_rs_lengths = 0; |
4727
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1686 _inc_cset_recorded_rs_lengths_diffs = 0; |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1687 _inc_cset_predicted_elapsed_time_ms = 0.0; |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1688 _inc_cset_predicted_elapsed_time_ms_diffs = 0.0; |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1689 _inc_cset_build_state = Active; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1690 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1691 |
4727
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1692 void G1CollectorPolicy::finalize_incremental_cset_building() { |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1693 assert(_inc_cset_build_state == Active, "Precondition"); |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1694 assert(SafepointSynchronize::is_at_safepoint(), "should be at a safepoint"); |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1695 |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1696 // The two "main" fields, _inc_cset_recorded_rs_lengths and |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1697 // _inc_cset_predicted_elapsed_time_ms, are updated by the thread |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1698 // that adds a new region to the CSet. Further updates by the |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1699 // concurrent refinement thread that samples the young RSet lengths |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1700 // are accumulated in the *_diffs fields. Here we add the diffs to |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1701 // the "main" fields. |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1702 |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1703 if (_inc_cset_recorded_rs_lengths_diffs >= 0) { |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1704 _inc_cset_recorded_rs_lengths += _inc_cset_recorded_rs_lengths_diffs; |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1705 } else { |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1706 // This is defensive. The diff should in theory be always positive |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1707 // as RSets can only grow between GCs. However, given that we |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1708 // sample their size concurrently with other threads updating them |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1709 // it's possible that we might get the wrong size back, which |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1710 // could make the calculations somewhat inaccurate. |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1711 size_t diffs = (size_t) (-_inc_cset_recorded_rs_lengths_diffs); |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1712 if (_inc_cset_recorded_rs_lengths >= diffs) { |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1713 _inc_cset_recorded_rs_lengths -= diffs; |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1714 } else { |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1715 _inc_cset_recorded_rs_lengths = 0; |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1716 } |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1717 } |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1718 _inc_cset_predicted_elapsed_time_ms += |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1719 _inc_cset_predicted_elapsed_time_ms_diffs; |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1720 |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1721 _inc_cset_recorded_rs_lengths_diffs = 0; |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1722 _inc_cset_predicted_elapsed_time_ms_diffs = 0.0; |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1723 } |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1724 |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1725 void G1CollectorPolicy::add_to_incremental_cset_info(HeapRegion* hr, size_t rs_length) { |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1726 // This routine is used when: |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1727 // * adding survivor regions to the incremental cset at the end of an |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1728 // evacuation pause, |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1729 // * adding the current allocation region to the incremental cset |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1730 // when it is retired, and |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1731 // * updating existing policy information for a region in the |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1732 // incremental cset via young list RSet sampling. |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1733 // Therefore this routine may be called at a safepoint by the |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1734 // VM thread, or in-between safepoints by mutator threads (when |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1735 // retiring the current allocation region) or a concurrent |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1736 // refine thread (RSet sampling). |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1737 |
6611 | 1738 double region_elapsed_time_ms = predict_region_elapsed_time_ms(hr, gcs_are_young()); |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1739 size_t used_bytes = hr->used(); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1740 _inc_cset_recorded_rs_lengths += rs_length; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1741 _inc_cset_predicted_elapsed_time_ms += region_elapsed_time_ms; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1742 _inc_cset_bytes_used_before += used_bytes; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1743 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1744 // Cache the values we have added to the aggregated informtion |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1745 // in the heap region in case we have to remove this region from |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1746 // the incremental collection set, or it is updated by the |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1747 // rset sampling code |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1748 hr->set_recorded_rs_length(rs_length); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1749 hr->set_predicted_elapsed_time_ms(region_elapsed_time_ms); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1750 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1751 |
4727
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1752 void G1CollectorPolicy::update_incremental_cset_info(HeapRegion* hr, |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1753 size_t new_rs_length) { |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1754 // Update the CSet information that is dependent on the new RS length |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1755 assert(hr->is_young(), "Precondition"); |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1756 assert(!SafepointSynchronize::is_at_safepoint(), |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1757 "should not be at a safepoint"); |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1758 |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1759 // We could have updated _inc_cset_recorded_rs_lengths and |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1760 // _inc_cset_predicted_elapsed_time_ms directly but we'd need to do |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1761 // that atomically, as this code is executed by a concurrent |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1762 // refinement thread, potentially concurrently with a mutator thread |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1763 // allocating a new region and also updating the same fields. To |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1764 // avoid the atomic operations we accumulate these updates on two |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1765 // separate fields (*_diffs) and we'll just add them to the "main" |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1766 // fields at the start of a GC. |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1767 |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1768 ssize_t old_rs_length = (ssize_t) hr->recorded_rs_length(); |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1769 ssize_t rs_lengths_diff = (ssize_t) new_rs_length - old_rs_length; |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1770 _inc_cset_recorded_rs_lengths_diffs += rs_lengths_diff; |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1771 |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1772 double old_elapsed_time_ms = hr->predicted_elapsed_time_ms(); |
6611 | 1773 double new_region_elapsed_time_ms = predict_region_elapsed_time_ms(hr, gcs_are_young()); |
4727
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1774 double elapsed_ms_diff = new_region_elapsed_time_ms - old_elapsed_time_ms; |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1775 _inc_cset_predicted_elapsed_time_ms_diffs += elapsed_ms_diff; |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1776 |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1777 hr->set_recorded_rs_length(new_rs_length); |
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1778 hr->set_predicted_elapsed_time_ms(new_region_elapsed_time_ms); |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1779 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1780 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1781 void G1CollectorPolicy::add_region_to_incremental_cset_common(HeapRegion* hr) { |
4090
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1782 assert(hr->is_young(), "invariant"); |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1783 assert(hr->young_index_in_cset() > -1, "should have already been set"); |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1784 assert(_inc_cset_build_state == Active, "Precondition"); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1785 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1786 // We need to clear and set the cached recorded/cached collection set |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1787 // information in the heap region here (before the region gets added |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1788 // to the collection set). An individual heap region's cached values |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1789 // are calculated, aggregated with the policy collection set info, |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1790 // and cached in the heap region here (initially) and (subsequently) |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1791 // by the Young List sampling code. |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1792 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1793 size_t rs_length = hr->rem_set()->occupied(); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1794 add_to_incremental_cset_info(hr, rs_length); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1795 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1796 HeapWord* hr_end = hr->end(); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1797 _inc_cset_max_finger = MAX2(_inc_cset_max_finger, hr_end); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1798 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1799 assert(!hr->in_collection_set(), "invariant"); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1800 hr->set_in_collection_set(true); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1801 assert( hr->next_in_collection_set() == NULL, "invariant"); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1802 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1803 _g1->register_region_with_in_cset_fast_test(hr); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1804 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1805 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1806 // Add the region at the RHS of the incremental cset |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1807 void G1CollectorPolicy::add_region_to_incremental_cset_rhs(HeapRegion* hr) { |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1808 // We should only ever be appending survivors at the end of a pause |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1809 assert( hr->is_survivor(), "Logic"); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1810 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1811 // Do the 'common' stuff |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1812 add_region_to_incremental_cset_common(hr); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1813 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1814 // Now add the region at the right hand side |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1815 if (_inc_cset_tail == NULL) { |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1816 assert(_inc_cset_head == NULL, "invariant"); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1817 _inc_cset_head = hr; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1818 } else { |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1819 _inc_cset_tail->set_next_in_collection_set(hr); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1820 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1821 _inc_cset_tail = hr; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1822 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1823 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1824 // Add the region to the LHS of the incremental cset |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1825 void G1CollectorPolicy::add_region_to_incremental_cset_lhs(HeapRegion* hr) { |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1826 // Survivors should be added to the RHS at the end of a pause |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1827 assert(!hr->is_survivor(), "Logic"); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1828 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1829 // Do the 'common' stuff |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1830 add_region_to_incremental_cset_common(hr); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1831 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1832 // Add the region at the left hand side |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1833 hr->set_next_in_collection_set(_inc_cset_head); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1834 if (_inc_cset_head == NULL) { |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1835 assert(_inc_cset_tail == NULL, "Invariant"); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1836 _inc_cset_tail = hr; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1837 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1838 _inc_cset_head = hr; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1839 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1840 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1841 #ifndef PRODUCT |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1842 void G1CollectorPolicy::print_collection_set(HeapRegion* list_head, outputStream* st) { |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1843 assert(list_head == inc_cset_head() || list_head == collection_set(), "must be"); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1844 |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1845 st->print_cr("\nCollection_set:"); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1846 HeapRegion* csr = list_head; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1847 while (csr != NULL) { |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1848 HeapRegion* next = csr->next_in_collection_set(); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1849 assert(csr->in_collection_set(), "bad CS"); |
6027
8a2e5a6a19a4
7143490: G1: Remove HeapRegion::_top_at_conc_mark_count
johnc
parents:
6011
diff
changeset
|
1850 st->print_cr(" "HR_FORMAT", P: "PTR_FORMAT "N: "PTR_FORMAT", age: %4d", |
8a2e5a6a19a4
7143490: G1: Remove HeapRegion::_top_at_conc_mark_count
johnc
parents:
6011
diff
changeset
|
1851 HR_FORMAT_PARAMS(csr), |
8a2e5a6a19a4
7143490: G1: Remove HeapRegion::_top_at_conc_mark_count
johnc
parents:
6011
diff
changeset
|
1852 csr->prev_top_at_mark_start(), csr->next_top_at_mark_start(), |
8a2e5a6a19a4
7143490: G1: Remove HeapRegion::_top_at_conc_mark_count
johnc
parents:
6011
diff
changeset
|
1853 csr->age_in_surv_rate_group_cond()); |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1854 csr = next; |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1855 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1856 } |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1857 #endif // !PRODUCT |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1858 |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1859 double G1CollectorPolicy::reclaimable_bytes_perc(size_t reclaimable_bytes) { |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1860 // Returns the given amount of reclaimable bytes (that represents |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1861 // the amount of reclaimable space still to be collected) as a |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1862 // percentage of the current heap capacity. |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1863 size_t capacity_bytes = _g1->capacity(); |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1864 return (double) reclaimable_bytes * 100.0 / (double) capacity_bytes; |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1865 } |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1866 |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1867 bool G1CollectorPolicy::next_gc_should_be_mixed(const char* true_action_str, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1868 const char* false_action_str) { |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1869 CollectionSetChooser* cset_chooser = _collectionSetChooser; |
6011 | 1870 if (cset_chooser->is_empty()) { |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1871 ergo_verbose0(ErgoMixedGCs, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1872 false_action_str, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1873 ergo_format_reason("candidate old regions not available")); |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1874 return false; |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1875 } |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1876 |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1877 // Is the amount of uncollected reclaimable space above G1HeapWastePercent? |
6011 | 1878 size_t reclaimable_bytes = cset_chooser->remaining_reclaimable_bytes(); |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1879 double reclaimable_perc = reclaimable_bytes_perc(reclaimable_bytes); |
5964
21595f05bc93
7146246: G1: expose some of the -XX flags that drive which old regions to collect during mixed GCs
tonyp
parents:
4912
diff
changeset
|
1880 double threshold = (double) G1HeapWastePercent; |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1881 if (reclaimable_perc <= threshold) { |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1882 ergo_verbose4(ErgoMixedGCs, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1883 false_action_str, |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1884 ergo_format_reason("reclaimable percentage not over threshold") |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1885 ergo_format_region("candidate old regions") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1886 ergo_format_byte_perc("reclaimable") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1887 ergo_format_perc("threshold"), |
6011 | 1888 cset_chooser->remaining_regions(), |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1889 reclaimable_bytes, |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1890 reclaimable_perc, threshold); |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1891 return false; |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1892 } |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1893 |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1894 ergo_verbose4(ErgoMixedGCs, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1895 true_action_str, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1896 ergo_format_reason("candidate old regions available") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1897 ergo_format_region("candidate old regions") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1898 ergo_format_byte_perc("reclaimable") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1899 ergo_format_perc("threshold"), |
6011 | 1900 cset_chooser->remaining_regions(), |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1901 reclaimable_bytes, |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1902 reclaimable_perc, threshold); |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1903 return true; |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1904 } |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
1905 |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1906 uint G1CollectorPolicy::calc_min_old_cset_length() { |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1907 // The min old CSet region bound is based on the maximum desired |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1908 // number of mixed GCs after a cycle. I.e., even if some old regions |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1909 // look expensive, we should add them to the CSet anyway to make |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1910 // sure we go through the available old regions in no more than the |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1911 // maximum desired number of mixed GCs. |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1912 // |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1913 // The calculation is based on the number of marked regions we added |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1914 // to the CSet chooser in the first place, not how many remain, so |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1915 // that the result is the same during all mixed GCs that follow a cycle. |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1916 |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1917 const size_t region_num = (size_t) _collectionSetChooser->length(); |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1918 const size_t gc_num = (size_t) MAX2(G1MixedGCCountTarget, (uintx) 1); |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1919 size_t result = region_num / gc_num; |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1920 // emulate ceiling |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1921 if (result * gc_num < region_num) { |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1922 result += 1; |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1923 } |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1924 return (uint) result; |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1925 } |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1926 |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1927 uint G1CollectorPolicy::calc_max_old_cset_length() { |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1928 // The max old CSet region bound is based on the threshold expressed |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1929 // as a percentage of the heap size. I.e., it should bound the |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1930 // number of old regions added to the CSet irrespective of how many |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1931 // of them are available. |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1932 |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1933 G1CollectedHeap* g1h = G1CollectedHeap::heap(); |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1934 const size_t region_num = g1h->n_regions(); |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1935 const size_t perc = (size_t) G1OldCSetRegionThresholdPercent; |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1936 size_t result = region_num * perc / 100; |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1937 // emulate ceiling |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1938 if (100 * result < region_num * perc) { |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1939 result += 1; |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1940 } |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1941 return (uint) result; |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1942 } |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1943 |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1944 |
10405 | 1945 void G1CollectorPolicy::finalize_cset(double target_pause_time_ms, EvacuationInfo& evacuation_info) { |
6611 | 1946 double young_start_time_sec = os::elapsedTime(); |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1947 |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1948 YoungList* young_list = _g1->young_list(); |
4727
67fdcb391461
7119027: G1: use atomics to update RS length / predict time of inc CSet
tonyp
parents:
4710
diff
changeset
|
1949 finalize_incremental_cset_building(); |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1950 |
1656
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1951 guarantee(target_pause_time_ms > 0.0, |
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1952 err_msg("target_pause_time_ms = %1.6lf should be positive", |
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1953 target_pause_time_ms)); |
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
1954 guarantee(_collection_set == NULL, "Precondition"); |
342 | 1955 |
1956 double base_time_ms = predict_base_elapsed_time_ms(_pending_cards); | |
1957 double predicted_pause_time_ms = base_time_ms; | |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1958 double time_remaining_ms = MAX2(target_pause_time_ms - base_time_ms, 0.0); |
342 | 1959 |
6611 | 1960 ergo_verbose4(ErgoCSetConstruction | ErgoHigh, |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1961 "start choosing CSet", |
6611 | 1962 ergo_format_size("_pending_cards") |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1963 ergo_format_ms("predicted base time") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1964 ergo_format_ms("remaining time") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1965 ergo_format_ms("target pause time"), |
6611 | 1966 _pending_cards, base_time_ms, time_remaining_ms, target_pause_time_ms); |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1967 |
4710 | 1968 _last_gc_was_young = gcs_are_young() ? true : false; |
1969 | |
1970 if (_last_gc_was_young) { | |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
1971 _trace_gen0_time_data.increment_young_collection_count(); |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1972 } else { |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
1973 _trace_gen0_time_data.increment_mixed_collection_count(); |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1974 } |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1975 |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1976 // The young list is laid with the survivor regions from the previous |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1977 // pause are appended to the RHS of the young list, i.e. |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1978 // [Newly Young Regions ++ Survivors from last pause]. |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1979 |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1980 uint survivor_region_length = young_list->survivor_length(); |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
1981 uint eden_region_length = young_list->length() - survivor_region_length; |
4090
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
1982 init_cset_region_lengths(eden_region_length, survivor_region_length); |
6611 | 1983 |
1984 HeapRegion* hr = young_list->first_survivor_region(); | |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1985 while (hr != NULL) { |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1986 assert(hr->is_survivor(), "badly formed young list"); |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1987 hr->set_young(); |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1988 hr = hr->get_next_young_region(); |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1989 } |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1990 |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1991 // Clear the fields that point to the survivor list - they are all young now. |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1992 young_list->clear_survivors(); |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1993 |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1994 _collection_set = _inc_cset_head; |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1995 _collection_set_bytes_used_before = _inc_cset_bytes_used_before; |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
1996 time_remaining_ms = MAX2(time_remaining_ms - _inc_cset_predicted_elapsed_time_ms, 0.0); |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1997 predicted_pause_time_ms += _inc_cset_predicted_elapsed_time_ms; |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
1998 |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
1999 ergo_verbose3(ErgoCSetConstruction | ErgoHigh, |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2000 "add young regions to CSet", |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2001 ergo_format_region("eden") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2002 ergo_format_region("survivors") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2003 ergo_format_ms("predicted young region time"), |
4090
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
2004 eden_region_length, survivor_region_length, |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2005 _inc_cset_predicted_elapsed_time_ms); |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2006 |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2007 // The number of recorded young regions is the incremental |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2008 // collection set's current size |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2009 set_recorded_rs_lengths(_inc_cset_recorded_rs_lengths); |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2010 |
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2011 double young_end_time_sec = os::elapsedTime(); |
6628
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
2012 phase_times()->record_young_cset_choice_time_ms((young_end_time_sec - young_start_time_sec) * 1000.0); |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2013 |
6611 | 2014 // Set the start of the non-young choice time. |
2015 double non_young_start_time_sec = young_end_time_sec; | |
3867
ff53346271fe
6814390: G1: remove the concept of non-generational G1
brutisso
parents:
3830
diff
changeset
|
2016 |
4710 | 2017 if (!gcs_are_young()) { |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2018 CollectionSetChooser* cset_chooser = _collectionSetChooser; |
6011 | 2019 cset_chooser->verify(); |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2020 const uint min_old_cset_length = calc_min_old_cset_length(); |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2021 const uint max_old_cset_length = calc_max_old_cset_length(); |
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
2022 |
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6007
diff
changeset
|
2023 uint expensive_region_num = 0; |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2024 bool check_time_remaining = adaptive_young_list_length(); |
6611 | 2025 |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2026 HeapRegion* hr = cset_chooser->peek(); |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2027 while (hr != NULL) { |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2028 if (old_cset_region_length() >= max_old_cset_length) { |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2029 // Added maximum number of old regions to the CSet. |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2030 ergo_verbose2(ErgoCSetConstruction, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2031 "finish adding old regions to CSet", |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2032 ergo_format_reason("old CSet region num reached max") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2033 ergo_format_region("old") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2034 ergo_format_region("max"), |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2035 old_cset_region_length(), max_old_cset_length); |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2036 break; |
342 | 2037 } |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2038 |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2039 |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2040 // Stop adding regions if the remaining reclaimable space is |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2041 // not above G1HeapWastePercent. |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2042 size_t reclaimable_bytes = cset_chooser->remaining_reclaimable_bytes(); |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2043 double reclaimable_perc = reclaimable_bytes_perc(reclaimable_bytes); |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2044 double threshold = (double) G1HeapWastePercent; |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2045 if (reclaimable_perc <= threshold) { |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2046 // We've added enough old regions that the amount of uncollected |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2047 // reclaimable space is at or below the waste threshold. Stop |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2048 // adding old regions to the CSet. |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2049 ergo_verbose5(ErgoCSetConstruction, |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2050 "finish adding old regions to CSet", |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2051 ergo_format_reason("reclaimable percentage not over threshold") |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2052 ergo_format_region("old") |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2053 ergo_format_region("max") |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2054 ergo_format_byte_perc("reclaimable") |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2055 ergo_format_perc("threshold"), |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2056 old_cset_region_length(), |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2057 max_old_cset_length, |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2058 reclaimable_bytes, |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2059 reclaimable_perc, threshold); |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2060 break; |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2061 } |
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2062 |
6611 | 2063 double predicted_time_ms = predict_region_elapsed_time_ms(hr, gcs_are_young()); |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2064 if (check_time_remaining) { |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2065 if (predicted_time_ms > time_remaining_ms) { |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2066 // Too expensive for the current CSet. |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2067 |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2068 if (old_cset_region_length() >= min_old_cset_length) { |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2069 // We have added the minimum number of old regions to the CSet, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2070 // we are done with this CSet. |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2071 ergo_verbose4(ErgoCSetConstruction, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2072 "finish adding old regions to CSet", |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2073 ergo_format_reason("predicted time is too high") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2074 ergo_format_ms("predicted time") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2075 ergo_format_ms("remaining time") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2076 ergo_format_region("old") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2077 ergo_format_region("min"), |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2078 predicted_time_ms, time_remaining_ms, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2079 old_cset_region_length(), min_old_cset_length); |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2080 break; |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2081 } |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2082 |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2083 // We'll add it anyway given that we haven't reached the |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2084 // minimum number of old regions. |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2085 expensive_region_num += 1; |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2086 } |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2087 } else { |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2088 if (old_cset_region_length() >= min_old_cset_length) { |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2089 // In the non-auto-tuning case, we'll finish adding regions |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2090 // to the CSet if we reach the minimum. |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2091 ergo_verbose2(ErgoCSetConstruction, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2092 "finish adding old regions to CSet", |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2093 ergo_format_reason("old CSet region num reached min") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2094 ergo_format_region("old") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2095 ergo_format_region("min"), |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2096 old_cset_region_length(), min_old_cset_length); |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2097 break; |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2098 } |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2099 } |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2100 |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2101 // We will add this region to the CSet. |
8681
27714220e50e
8007036: G1: Too many old regions added to last mixed GC
johnc
parents:
8094
diff
changeset
|
2102 time_remaining_ms = MAX2(time_remaining_ms - predicted_time_ms, 0.0); |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2103 predicted_pause_time_ms += predicted_time_ms; |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2104 cset_chooser->remove_and_move_to_next(hr); |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2105 _g1->old_set_remove(hr); |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2106 add_old_region_to_cset(hr); |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2107 |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2108 hr = cset_chooser->peek(); |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2109 } |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2110 if (hr == NULL) { |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2111 ergo_verbose0(ErgoCSetConstruction, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2112 "finish adding old regions to CSet", |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2113 ergo_format_reason("candidate old regions not available")); |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2114 } |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2115 |
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2116 if (expensive_region_num > 0) { |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2117 // We print the information once here at the end, predicated on |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2118 // whether we added any apparently expensive regions or not, to |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2119 // avoid generating output per region. |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2120 ergo_verbose4(ErgoCSetConstruction, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2121 "added expensive regions to CSet", |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2122 ergo_format_reason("old CSet region num not reached min") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2123 ergo_format_region("old") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2124 ergo_format_region("expensive") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2125 ergo_format_region("min") |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2126 ergo_format_ms("remaining time"), |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2127 old_cset_region_length(), |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2128 expensive_region_num, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2129 min_old_cset_length, |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2130 time_remaining_ms); |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2131 } |
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4837
diff
changeset
|
2132 |
6011 | 2133 cset_chooser->verify(); |
342 | 2134 } |
2135 | |
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
2136 stop_incremental_cset_building(); |
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
2137 |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2138 ergo_verbose5(ErgoCSetConstruction, |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2139 "finish choosing CSet", |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2140 ergo_format_region("eden") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2141 ergo_format_region("survivors") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2142 ergo_format_region("old") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2143 ergo_format_ms("predicted pause time") |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2144 ergo_format_ms("target pause time"), |
4090
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
2145 eden_region_length, survivor_region_length, |
a88de71c4e3a
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
tonyp
parents:
4072
diff
changeset
|
2146 old_cset_region_length(), |
3914
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2147 predicted_pause_time_ms, target_pause_time_ms); |
20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
3868
diff
changeset
|
2148 |
342 | 2149 double non_young_end_time_sec = os::elapsedTime(); |
6628
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
2150 phase_times()->record_non_young_cset_choice_time_ms((non_young_end_time_sec - non_young_start_time_sec) * 1000.0); |
10405 | 2151 evacuation_info.set_collectionset_regions(cset_region_length()); |
342 | 2152 } |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2153 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2154 void TraceGen0TimeData::record_start_collection(double time_to_stop_the_world_ms) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2155 if(TraceGen0Time) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2156 _all_stop_world_times_ms.add(time_to_stop_the_world_ms); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2157 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2158 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2159 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2160 void TraceGen0TimeData::record_yield_time(double yield_time_ms) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2161 if(TraceGen0Time) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2162 _all_yield_times_ms.add(yield_time_ms); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2163 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2164 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2165 |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2166 void TraceGen0TimeData::record_end_collection(double pause_time_ms, G1GCPhaseTimes* phase_times) { |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2167 if(TraceGen0Time) { |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2168 _total.add(pause_time_ms); |
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2169 _other.add(pause_time_ms - phase_times->accounted_time_ms()); |
6628
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
2170 _root_region_scan_wait.add(phase_times->root_region_scan_wait_time_ms()); |
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
2171 _parallel.add(phase_times->cur_collection_par_time_ms()); |
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
2172 _ext_root_scan.add(phase_times->average_last_ext_root_scan_time()); |
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
2173 _satb_filtering.add(phase_times->average_last_satb_filtering_times_ms()); |
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
2174 _update_rs.add(phase_times->average_last_update_rs_time()); |
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
2175 _scan_rs.add(phase_times->average_last_scan_rs_time()); |
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
2176 _obj_copy.add(phase_times->average_last_obj_copy_time()); |
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
2177 _termination.add(phase_times->average_last_termination_time()); |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2178 |
6628
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
2179 double parallel_known_time = phase_times->average_last_ext_root_scan_time() + |
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
2180 phase_times->average_last_satb_filtering_times_ms() + |
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
2181 phase_times->average_last_update_rs_time() + |
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
2182 phase_times->average_last_scan_rs_time() + |
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
2183 phase_times->average_last_obj_copy_time() + |
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
2184 + phase_times->average_last_termination_time(); |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2185 |
6628
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
2186 double parallel_other_time = phase_times->cur_collection_par_time_ms() - parallel_known_time; |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2187 _parallel_other.add(parallel_other_time); |
6628
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6611
diff
changeset
|
2188 _clear_ct.add(phase_times->cur_clear_ct_time_ms()); |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2189 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2190 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2191 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2192 void TraceGen0TimeData::increment_young_collection_count() { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2193 if(TraceGen0Time) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2194 ++_young_pause_num; |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2195 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2196 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2197 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2198 void TraceGen0TimeData::increment_mixed_collection_count() { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2199 if(TraceGen0Time) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2200 ++_mixed_pause_num; |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2201 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2202 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2203 |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2204 void TraceGen0TimeData::print_summary(const char* str, |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2205 const NumberSeq* seq) const { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2206 double sum = seq->sum(); |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2207 gclog_or_tty->print_cr("%-27s = %8.2lf s (avg = %8.2lf ms)", |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2208 str, sum / 1000.0, seq->avg()); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2209 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2210 |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2211 void TraceGen0TimeData::print_summary_sd(const char* str, |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2212 const NumberSeq* seq) const { |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2213 print_summary(str, seq); |
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2214 gclog_or_tty->print_cr("%+45s = %5d, std dev = %8.2lf ms, max = %8.2lf ms)", |
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2215 "(num", seq->num(), seq->sd(), seq->maximum()); |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2216 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2217 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2218 void TraceGen0TimeData::print() const { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2219 if (!TraceGen0Time) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2220 return; |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2221 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2222 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2223 gclog_or_tty->print_cr("ALL PAUSES"); |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2224 print_summary_sd(" Total", &_total); |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2225 gclog_or_tty->print_cr(""); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2226 gclog_or_tty->print_cr(""); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2227 gclog_or_tty->print_cr(" Young GC Pauses: %8d", _young_pause_num); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2228 gclog_or_tty->print_cr(" Mixed GC Pauses: %8d", _mixed_pause_num); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2229 gclog_or_tty->print_cr(""); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2230 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2231 gclog_or_tty->print_cr("EVACUATION PAUSES"); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2232 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2233 if (_young_pause_num == 0 && _mixed_pause_num == 0) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2234 gclog_or_tty->print_cr("none"); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2235 } else { |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2236 print_summary_sd(" Evacuation Pauses", &_total); |
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2237 print_summary(" Root Region Scan Wait", &_root_region_scan_wait); |
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2238 print_summary(" Parallel Time", &_parallel); |
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2239 print_summary(" Ext Root Scanning", &_ext_root_scan); |
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2240 print_summary(" SATB Filtering", &_satb_filtering); |
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2241 print_summary(" Update RS", &_update_rs); |
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2242 print_summary(" Scan RS", &_scan_rs); |
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2243 print_summary(" Object Copy", &_obj_copy); |
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2244 print_summary(" Termination", &_termination); |
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2245 print_summary(" Parallel Other", &_parallel_other); |
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2246 print_summary(" Clear CT", &_clear_ct); |
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2247 print_summary(" Other", &_other); |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2248 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2249 gclog_or_tty->print_cr(""); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2250 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2251 gclog_or_tty->print_cr("MISC"); |
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2252 print_summary_sd(" Stop World", &_all_stop_world_times_ms); |
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
6109
diff
changeset
|
2253 print_summary_sd(" Yields", &_all_yield_times_ms); |
6109
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2254 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2255 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2256 void TraceGen1TimeData::record_full_collection(double full_gc_time_ms) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2257 if (TraceGen1Time) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2258 _all_full_gc_times.add(full_gc_time_ms); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2259 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2260 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2261 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2262 void TraceGen1TimeData::print() const { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2263 if (!TraceGen1Time) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2264 return; |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2265 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2266 |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2267 if (_all_full_gc_times.num() > 0) { |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2268 gclog_or_tty->print("\n%4d full_gcs: total time = %8.2f s", |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2269 _all_full_gc_times.num(), |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2270 _all_full_gc_times.sum() / 1000.0); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2271 gclog_or_tty->print_cr(" (avg = %8.2fms).", _all_full_gc_times.avg()); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2272 gclog_or_tty->print_cr(" [std. dev = %8.2f ms, max = %8.2f ms]", |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2273 _all_full_gc_times.sd(), |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2274 _all_full_gc_times.maximum()); |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2275 } |
bbc900c2482a
7172279: G1: Clean up TraceGen0Time and TraceGen1Time data gathering
brutisso
parents:
6064
diff
changeset
|
2276 } |