Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/g1_globals.hpp @ 1703:f6f3eef8a521
6581734: CMS Old Gen's collection usage is zero after GC which is incorrect
Summary: Management code enabled for use by a concurrent collector.
Reviewed-by: mchung, ysr
author | kevinw |
---|---|
date | Fri, 30 Jul 2010 22:43:50 +0100 |
parents | b9bc732be7c0 |
children | c32059ef4dc0 |
rev | line source |
---|---|
342 | 1 /* |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1394
diff
changeset
|
2 * Copyright (c) 2001, 2010, 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 | |
25 // | |
26 // Defines all globals flags used by the garbage-first compiler. | |
27 // | |
28 | |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
342
diff
changeset
|
29 #define G1_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw) \ |
342 | 30 \ |
751 | 31 product(intx, G1ConfidencePercent, 50, \ |
342 | 32 "Confidence level for MMU/pause predictions") \ |
33 \ | |
884
83b687ce3090
6866591: G1: print update buffer processing stats more often
tonyp
parents:
883
diff
changeset
|
34 develop(intx, G1MarkingOverheadPercent, 0, \ |
342 | 35 "Overhead of concurrent marking") \ |
36 \ | |
751 | 37 develop(bool, G1Gen, true, \ |
342 | 38 "If true, it will enable the generational G1") \ |
39 \ | |
751 | 40 develop(intx, G1PolicyVerbose, 0, \ |
342 | 41 "The verbosity level on G1 policy decisions") \ |
42 \ | |
43 develop(bool, G1UseHRIntoRS, true, \ | |
44 "Determines whether the 'advanced' HR Into rem set is used.") \ | |
45 \ | |
46 develop(intx, G1MarkingVerboseLevel, 0, \ | |
47 "Level (0-4) of verboseness of the marking code") \ | |
48 \ | |
1044 | 49 develop(bool, G1PrintReachableAtInitialMark, false, \ |
50 "Reachable object dump at the initial mark pause") \ | |
51 \ | |
52 develop(bool, G1VerifyDuringGCPrintReachable, false, \ | |
53 "If conc mark verification fails, dump reachable objects") \ | |
54 \ | |
55 develop(ccstr, G1PrintReachableBaseFile, NULL, \ | |
56 "The base file name for the reachable object dumps") \ | |
342 | 57 \ |
58 develop(bool, G1TraceMarkStackOverflow, false, \ | |
59 "If true, extra debugging code for CM restart for ovflw.") \ | |
60 \ | |
61 develop(intx, G1PausesBtwnConcMark, -1, \ | |
62 "If positive, fixed number of pauses between conc markings") \ | |
63 \ | |
1282 | 64 diagnostic(bool, G1SummarizeConcMark, false, \ |
342 | 65 "Summarize concurrent mark info") \ |
66 \ | |
751 | 67 diagnostic(bool, G1SummarizeRSetStats, false, \ |
342 | 68 "Summarize remembered set processing info") \ |
69 \ | |
884
83b687ce3090
6866591: G1: print update buffer processing stats more often
tonyp
parents:
883
diff
changeset
|
70 diagnostic(intx, G1SummarizeRSetStatsPeriod, 0, \ |
83b687ce3090
6866591: G1: print update buffer processing stats more often
tonyp
parents:
883
diff
changeset
|
71 "The period (in number of GCs) at which we will generate " \ |
83b687ce3090
6866591: G1: print update buffer processing stats more often
tonyp
parents:
883
diff
changeset
|
72 "update buffer processing info " \ |
83b687ce3090
6866591: G1: print update buffer processing stats more often
tonyp
parents:
883
diff
changeset
|
73 "(0 means do not periodically generate this info); " \ |
83b687ce3090
6866591: G1: print update buffer processing stats more often
tonyp
parents:
883
diff
changeset
|
74 "it also requires -XX:+G1SummarizeRSetStats") \ |
83b687ce3090
6866591: G1: print update buffer processing stats more often
tonyp
parents:
883
diff
changeset
|
75 \ |
751 | 76 diagnostic(bool, G1SummarizeZFStats, false, \ |
342 | 77 "Summarize zero-filling info") \ |
78 \ | |
1282 | 79 diagnostic(bool, G1TraceConcRefinement, false, \ |
342 | 80 "Trace G1 concurrent refinement") \ |
81 \ | |
751 | 82 product(intx, G1MarkRegionStackSize, 1024 * 1024, \ |
342 | 83 "Size of the region stack for concurrent marking.") \ |
84 \ | |
85 develop(bool, G1ConcZeroFill, true, \ | |
86 "If true, run concurrent zero-filling thread") \ | |
87 \ | |
88 develop(intx, G1ConcZFMaxRegions, 1, \ | |
89 "Stop zero-filling when # of zf'd regions reaches") \ | |
90 \ | |
91 develop(bool, G1SATBBarrierPrintNullPreVals, false, \ | |
92 "If true, count frac of ptr writes with null pre-vals.") \ | |
93 \ | |
1282 | 94 product(intx, G1SATBBufferSize, 1*K, \ |
342 | 95 "Number of entries in an SATB log buffer.") \ |
96 \ | |
1282 | 97 develop(intx, G1SATBProcessCompletedThreshold, 20, \ |
342 | 98 "Number of completed buffers that triggers log processing.") \ |
99 \ | |
100 develop(intx, G1ExtraRegionSurvRate, 33, \ | |
101 "If the young survival rate is S, and there's room left in " \ | |
102 "to-space, we will allow regions whose survival rate is up to " \ | |
103 "S + (1 - S)*X, where X is this parameter (as a fraction.)") \ | |
104 \ | |
105 develop(intx, G1InitYoungSurvRatio, 50, \ | |
106 "Expected Survival Rate for newly allocated bytes") \ | |
107 \ | |
108 develop(bool, G1SATBPrintStubs, false, \ | |
109 "If true, print generated stubs for the SATB barrier") \ | |
110 \ | |
1282 | 111 experimental(intx, G1ExpandByPercentOfAvailable, 20, \ |
342 | 112 "When expanding, % of uncommitted space to claim.") \ |
113 \ | |
114 develop(bool, G1RSBarrierRegionFilter, true, \ | |
115 "If true, generate region filtering code in RS barrier") \ | |
116 \ | |
117 develop(bool, G1RSBarrierNullFilter, true, \ | |
118 "If true, generate null-pointer filtering code in RS barrier") \ | |
119 \ | |
120 develop(bool, G1PrintCTFilterStats, false, \ | |
121 "If true, print stats on RS filtering effectiveness") \ | |
122 \ | |
616
4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
iveresov
parents:
545
diff
changeset
|
123 develop(bool, G1DeferredRSUpdate, true, \ |
4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
iveresov
parents:
545
diff
changeset
|
124 "If true, use deferred RS updates") \ |
4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
iveresov
parents:
545
diff
changeset
|
125 \ |
342 | 126 develop(bool, G1RSLogCheckCardTable, false, \ |
127 "If true, verify that no dirty cards remain after RS log " \ | |
128 "processing.") \ | |
129 \ | |
130 develop(bool, G1RSCountHisto, false, \ | |
131 "If true, print a histogram of RS occupancies after each pause") \ | |
132 \ | |
133 develop(intx, G1PrintRegionLivenessInfo, 0, \ | |
134 "When > 0, print the occupancies of the <n> best and worst" \ | |
135 "regions.") \ | |
136 \ | |
137 develop(bool, G1PrintParCleanupStats, false, \ | |
138 "When true, print extra stats about parallel cleanup.") \ | |
139 \ | |
140 develop(bool, G1DisablePreBarrier, false, \ | |
141 "Disable generation of pre-barrier (i.e., marking barrier) ") \ | |
142 \ | |
143 develop(bool, G1DisablePostBarrier, false, \ | |
144 "Disable generation of post-barrier (i.e., RS barrier) ") \ | |
145 \ | |
883
27f6a9b9c311
6864886: G1: rename -XX parameters related to update buffers
tonyp
parents:
845
diff
changeset
|
146 product(intx, G1UpdateBufferSize, 256, \ |
27f6a9b9c311
6864886: G1: rename -XX parameters related to update buffers
tonyp
parents:
845
diff
changeset
|
147 "Size of an update buffer") \ |
27f6a9b9c311
6864886: G1: rename -XX parameters related to update buffers
tonyp
parents:
845
diff
changeset
|
148 \ |
1282 | 149 product(intx, G1ConcRefinementYellowZone, 0, \ |
883
27f6a9b9c311
6864886: G1: rename -XX parameters related to update buffers
tonyp
parents:
845
diff
changeset
|
150 "Number of enqueued update buffers that will " \ |
1111 | 151 "trigger concurrent processing. Will be selected ergonomically " \ |
152 "by default.") \ | |
153 \ | |
1282 | 154 product(intx, G1ConcRefinementRedZone, 0, \ |
1111 | 155 "Maximum number of enqueued update buffers before mutator " \ |
156 "threads start processing new ones instead of enqueueing them. " \ | |
157 "Will be selected ergonomically by default. Zero will disable " \ | |
158 "concurrent processing.") \ | |
159 \ | |
1282 | 160 product(intx, G1ConcRefinementGreenZone, 0, \ |
1111 | 161 "The number of update buffers that are left in the queue by the " \ |
162 "concurrent processing threads. Will be selected ergonomically " \ | |
163 "by default.") \ | |
883
27f6a9b9c311
6864886: G1: rename -XX parameters related to update buffers
tonyp
parents:
845
diff
changeset
|
164 \ |
1282 | 165 product(intx, G1ConcRefinementServiceIntervalMillis, 300, \ |
1111 | 166 "The last concurrent refinement thread wakes up every " \ |
167 "specified number of milliseconds to do miscellaneous work.") \ | |
168 \ | |
1282 | 169 product(intx, G1ConcRefinementThresholdStep, 0, \ |
1111 | 170 "Each time the rset update queue increases by this amount " \ |
171 "activate the next refinement thread if available. " \ | |
172 "Will be selected ergonomically by default.") \ | |
173 \ | |
1282 | 174 product(intx, G1RSetUpdatingPauseTimePercent, 10, \ |
1111 | 175 "A target percentage of time that is allowed to be spend on " \ |
176 "process RS update buffers during the collection pause.") \ | |
177 \ | |
1282 | 178 product(bool, G1UseAdaptiveConcRefinement, true, \ |
1111 | 179 "Select green, yellow and red zones adaptively to meet the " \ |
180 "the pause requirements.") \ | |
342 | 181 \ |
182 develop(intx, G1ConcRSLogCacheSize, 10, \ | |
183 "Log base 2 of the length of conc RS hot-card cache.") \ | |
184 \ | |
751 | 185 develop(intx, G1ConcRSHotCardLimit, 4, \ |
342 | 186 "The threshold that defines (>=) a hot card.") \ |
187 \ | |
188 develop(bool, G1PrintOopAppls, false, \ | |
189 "When true, print applications of closures to external locs.") \ | |
190 \ | |
1261
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
191 develop(intx, G1RSetRegionEntriesBase, 256, \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
192 "Max number of regions in a fine-grain table per MB.") \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
193 \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
194 product(intx, G1RSetRegionEntries, 0, \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
195 "Max number of regions for which we keep bitmaps." \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
196 "Will be set ergonomically by default") \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
197 \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
198 develop(intx, G1RSetSparseRegionEntriesBase, 4, \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
199 "Max number of entries per region in a sparse table " \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
200 "per MB.") \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
201 \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
202 product(intx, G1RSetSparseRegionEntries, 0, \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
203 "Max number of entries per region in a sparse table." \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
204 "Will be set ergonomically by default.") \ |
342 | 205 \ |
206 develop(bool, G1RecordHRRSOops, false, \ | |
207 "When true, record recent calls to rem set operations.") \ | |
208 \ | |
209 develop(bool, G1RecordHRRSEvents, false, \ | |
210 "When true, record recent calls to rem set operations.") \ | |
211 \ | |
212 develop(intx, G1MaxVerifyFailures, -1, \ | |
213 "The maximum number of verification failrues to print. " \ | |
214 "-1 means print all.") \ | |
215 \ | |
216 develop(bool, G1ScrubRemSets, true, \ | |
217 "When true, do RS scrubbing after cleanup.") \ | |
218 \ | |
219 develop(bool, G1RSScrubVerbose, false, \ | |
220 "When true, do RS scrubbing with verbose output.") \ | |
221 \ | |
222 develop(bool, G1YoungSurvRateVerbose, false, \ | |
223 "print out the survival rate of young regions according to age.") \ | |
224 \ | |
225 develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \ | |
226 "the number of regions for which we'll print a surv rate " \ | |
227 "summary.") \ | |
228 \ | |
1282 | 229 product(intx, G1ReservePercent, 10, \ |
342 | 230 "It determines the minimum reserve we should have in the heap " \ |
231 "to minimize the probability of promotion failure.") \ | |
232 \ | |
1282 | 233 diagnostic(bool, G1PrintHeapRegions, false, \ |
342 | 234 "If set G1 will print information on which regions are being " \ |
235 "allocated and which are reclaimed.") \ | |
236 \ | |
237 develop(bool, G1HRRSUseSparseTable, true, \ | |
238 "When true, use sparse table to save space.") \ | |
239 \ | |
240 develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \ | |
241 "Forces flushing of log buffers before verification.") \ | |
242 \ | |
1087
23b9a8d315fc
6902701: G1: protect debugging code related to 6898948 with a debug flag
ysr
parents:
1044
diff
changeset
|
243 develop(bool, G1FailOnFPError, false, \ |
23b9a8d315fc
6902701: G1: protect debugging code related to 6898948 with a debug flag
ysr
parents:
1044
diff
changeset
|
244 "When set, G1 will fail when it encounters an FP 'error', " \ |
23b9a8d315fc
6902701: G1: protect debugging code related to 6898948 with a debug flag
ysr
parents:
1044
diff
changeset
|
245 "so as to allow debugging") \ |
23b9a8d315fc
6902701: G1: protect debugging code related to 6898948 with a debug flag
ysr
parents:
1044
diff
changeset
|
246 \ |
751 | 247 develop(bool, G1FixedTenuringThreshold, false, \ |
545 | 248 "When set, G1 will not adjust the tenuring threshold") \ |
249 \ | |
751 | 250 develop(bool, G1FixedEdenSize, false, \ |
545 | 251 "When set, G1 will not allocate unused survivor space regions") \ |
252 \ | |
751 | 253 develop(uintx, G1FixedSurvivorSpaceSize, 0, \ |
545 | 254 "If non-0 is the size of the G1 survivor space, " \ |
638
2a5da27ccae9
6816154: G1: introduce flags to enable/disable RSet updating and scanning
tonyp
parents:
616
diff
changeset
|
255 "otherwise SurvivorRatio is used to determine the size") \ |
2a5da27ccae9
6816154: G1: introduce flags to enable/disable RSet updating and scanning
tonyp
parents:
616
diff
changeset
|
256 \ |
942
2c79770d1f6e
6819085: G1: use larger and/or user settable region size
tonyp
parents:
940
diff
changeset
|
257 product(uintx, G1HeapRegionSize, 0, \ |
2c79770d1f6e
6819085: G1: use larger and/or user settable region size
tonyp
parents:
940
diff
changeset
|
258 "Size of the G1 regions.") \ |
2c79770d1f6e
6819085: G1: use larger and/or user settable region size
tonyp
parents:
940
diff
changeset
|
259 \ |
1357
781e29eb8e08
6677708: G1: re-enable parallel RSet updating and scanning
tonyp
parents:
1356
diff
changeset
|
260 experimental(bool, G1UseParallelRSetUpdating, true, \ |
638
2a5da27ccae9
6816154: G1: introduce flags to enable/disable RSet updating and scanning
tonyp
parents:
616
diff
changeset
|
261 "Enables the parallelization of remembered set updating " \ |
2a5da27ccae9
6816154: G1: introduce flags to enable/disable RSet updating and scanning
tonyp
parents:
616
diff
changeset
|
262 "during evacuation pauses") \ |
2a5da27ccae9
6816154: G1: introduce flags to enable/disable RSet updating and scanning
tonyp
parents:
616
diff
changeset
|
263 \ |
1357
781e29eb8e08
6677708: G1: re-enable parallel RSet updating and scanning
tonyp
parents:
1356
diff
changeset
|
264 experimental(bool, G1UseParallelRSetScanning, true, \ |
638
2a5da27ccae9
6816154: G1: introduce flags to enable/disable RSet updating and scanning
tonyp
parents:
616
diff
changeset
|
265 "Enables the parallelization of remembered set scanning " \ |
794 | 266 "during evacuation pauses") \ |
267 \ | |
1282 | 268 product(uintx, G1ConcRefinementThreads, 0, \ |
794 | 269 "If non-0 is the number of parallel rem set update threads, " \ |
890
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
884
diff
changeset
|
270 "otherwise the value is determined ergonomically.") \ |
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
884
diff
changeset
|
271 \ |
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
884
diff
changeset
|
272 develop(intx, G1CardCountCacheExpandThreshold, 16, \ |
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
884
diff
changeset
|
273 "Expand the card count cache if the number of collisions for " \ |
940
8624da129f0b
6841313: G1: dirty cards of survivor regions in parallel
apetrusenko
parents:
936
diff
changeset
|
274 "a particular entry exceeds this value.") \ |
8624da129f0b
6841313: G1: dirty cards of survivor regions in parallel
apetrusenko
parents:
936
diff
changeset
|
275 \ |
8624da129f0b
6841313: G1: dirty cards of survivor regions in parallel
apetrusenko
parents:
936
diff
changeset
|
276 develop(bool, G1VerifyCTCleanup, false, \ |
1194
34fb2662f6c2
6920090: G1: Disable ReduceInitialCardMarks at least until 6920109 is fixed
ysr
parents:
1111
diff
changeset
|
277 "Verify card table cleanup.") \ |
34fb2662f6c2
6920090: G1: Disable ReduceInitialCardMarks at least until 6920109 is fixed
ysr
parents:
1111
diff
changeset
|
278 \ |
1261
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
279 product(uintx, G1RSetScanBlockSize, 64, \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
280 "Size of a work unit of cards claimed by a worker thread" \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
281 "during RSet scanning.") \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
282 \ |
1194
34fb2662f6c2
6920090: G1: Disable ReduceInitialCardMarks at least until 6920109 is fixed
ysr
parents:
1111
diff
changeset
|
283 develop(bool, ReduceInitialCardMarksForG1, false, \ |
34fb2662f6c2
6920090: G1: Disable ReduceInitialCardMarks at least until 6920109 is fixed
ysr
parents:
1111
diff
changeset
|
284 "When ReduceInitialCardMarks is true, this flag setting " \ |
34fb2662f6c2
6920090: G1: Disable ReduceInitialCardMarks at least until 6920109 is fixed
ysr
parents:
1111
diff
changeset
|
285 " controls whether G1 allows the RICM optimization") |
342 | 286 |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
342
diff
changeset
|
287 G1_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG, DECLARE_MANAGEABLE_FLAG, DECLARE_PRODUCT_RW_FLAG) |