Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/g1_globals.hpp @ 1357:781e29eb8e08
6677708: G1: re-enable parallel RSet updating and scanning
Summary: Enable parallel RSet updating and scanning.
Reviewed-by: iveresov, jmasa
| author | tonyp |
|---|---|
| date | Fri, 02 Apr 2010 12:10:08 -0400 |
| parents | 56507bcd639e |
| children | 79e419e5ea3b |
| rev | line source |
|---|---|
| 342 | 1 /* |
| 579 | 2 * Copyright 2001-2009 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 // | |
| 26 // Defines all globals flags used by the garbage-first compiler. | |
| 27 // | |
| 28 | |
|
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29 #define G1_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw) \ |
| 342 | 30 \ |
| 751 | 31 product(intx, G1ParallelGCAllocBufferSize, 8*K, \ |
| 342 | 32 "Size of parallel G1 allocation buffers in to-space.") \ |
| 33 \ | |
| 751 | 34 product(intx, G1ConfidencePercent, 50, \ |
| 342 | 35 "Confidence level for MMU/pause predictions") \ |
| 36 \ | |
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37 develop(intx, G1MarkingOverheadPercent, 0, \ |
| 342 | 38 "Overhead of concurrent marking") \ |
| 39 \ | |
| 751 | 40 develop(bool, G1Gen, true, \ |
| 342 | 41 "If true, it will enable the generational G1") \ |
| 42 \ | |
| 751 | 43 develop(intx, G1PolicyVerbose, 0, \ |
| 342 | 44 "The verbosity level on G1 policy decisions") \ |
| 45 \ | |
| 46 develop(bool, G1UseHRIntoRS, true, \ | |
| 47 "Determines whether the 'advanced' HR Into rem set is used.") \ | |
| 48 \ | |
| 49 develop(intx, G1MarkingVerboseLevel, 0, \ | |
| 50 "Level (0-4) of verboseness of the marking code") \ | |
| 51 \ | |
| 1044 | 52 develop(bool, G1PrintReachableAtInitialMark, false, \ |
| 53 "Reachable object dump at the initial mark pause") \ | |
| 54 \ | |
| 55 develop(bool, G1VerifyDuringGCPrintReachable, false, \ | |
| 56 "If conc mark verification fails, dump reachable objects") \ | |
| 57 \ | |
| 58 develop(ccstr, G1PrintReachableBaseFile, NULL, \ | |
| 59 "The base file name for the reachable object dumps") \ | |
| 342 | 60 \ |
| 61 develop(bool, G1TraceMarkStackOverflow, false, \ | |
| 62 "If true, extra debugging code for CM restart for ovflw.") \ | |
| 63 \ | |
| 64 develop(intx, G1PausesBtwnConcMark, -1, \ | |
| 65 "If positive, fixed number of pauses between conc markings") \ | |
| 66 \ | |
| 1282 | 67 diagnostic(bool, G1SummarizeConcMark, false, \ |
| 342 | 68 "Summarize concurrent mark info") \ |
| 69 \ | |
| 751 | 70 diagnostic(bool, G1SummarizeRSetStats, false, \ |
| 342 | 71 "Summarize remembered set processing info") \ |
| 72 \ | |
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73 diagnostic(intx, G1SummarizeRSetStatsPeriod, 0, \ |
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74 "The period (in number of GCs) at which we will generate " \ |
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75 "update buffer processing info " \ |
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76 "(0 means do not periodically generate this info); " \ |
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77 "it also requires -XX:+G1SummarizeRSetStats") \ |
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78 \ |
| 751 | 79 diagnostic(bool, G1SummarizeZFStats, false, \ |
| 342 | 80 "Summarize zero-filling info") \ |
| 81 \ | |
| 1282 | 82 diagnostic(bool, G1TraceConcRefinement, false, \ |
| 342 | 83 "Trace G1 concurrent refinement") \ |
| 84 \ | |
| 751 | 85 product(intx, G1MarkRegionStackSize, 1024 * 1024, \ |
| 342 | 86 "Size of the region stack for concurrent marking.") \ |
| 87 \ | |
| 88 develop(bool, G1ConcZeroFill, true, \ | |
| 89 "If true, run concurrent zero-filling thread") \ | |
| 90 \ | |
| 91 develop(intx, G1ConcZFMaxRegions, 1, \ | |
| 92 "Stop zero-filling when # of zf'd regions reaches") \ | |
| 93 \ | |
| 94 develop(bool, G1SATBBarrierPrintNullPreVals, false, \ | |
| 95 "If true, count frac of ptr writes with null pre-vals.") \ | |
| 96 \ | |
| 1282 | 97 product(intx, G1SATBBufferSize, 1*K, \ |
| 342 | 98 "Number of entries in an SATB log buffer.") \ |
| 99 \ | |
| 1282 | 100 develop(intx, G1SATBProcessCompletedThreshold, 20, \ |
| 342 | 101 "Number of completed buffers that triggers log processing.") \ |
| 102 \ | |
| 103 develop(intx, G1ExtraRegionSurvRate, 33, \ | |
| 104 "If the young survival rate is S, and there's room left in " \ | |
| 105 "to-space, we will allow regions whose survival rate is up to " \ | |
| 106 "S + (1 - S)*X, where X is this parameter (as a fraction.)") \ | |
| 107 \ | |
| 108 develop(intx, G1InitYoungSurvRatio, 50, \ | |
| 109 "Expected Survival Rate for newly allocated bytes") \ | |
| 110 \ | |
| 111 develop(bool, G1SATBPrintStubs, false, \ | |
| 112 "If true, print generated stubs for the SATB barrier") \ | |
| 113 \ | |
| 1282 | 114 experimental(intx, G1ExpandByPercentOfAvailable, 20, \ |
| 342 | 115 "When expanding, % of uncommitted space to claim.") \ |
| 116 \ | |
| 117 develop(bool, G1RSBarrierRegionFilter, true, \ | |
| 118 "If true, generate region filtering code in RS barrier") \ | |
| 119 \ | |
| 120 develop(bool, G1RSBarrierNullFilter, true, \ | |
| 121 "If true, generate null-pointer filtering code in RS barrier") \ | |
| 122 \ | |
| 123 develop(bool, G1PrintCTFilterStats, false, \ | |
| 124 "If true, print stats on RS filtering effectiveness") \ | |
| 125 \ | |
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126 develop(bool, G1DeferredRSUpdate, true, \ |
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127 "If true, use deferred RS updates") \ |
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128 \ |
| 342 | 129 develop(bool, G1RSLogCheckCardTable, false, \ |
| 130 "If true, verify that no dirty cards remain after RS log " \ | |
| 131 "processing.") \ | |
| 132 \ | |
| 133 develop(bool, G1RSCountHisto, false, \ | |
| 134 "If true, print a histogram of RS occupancies after each pause") \ | |
| 135 \ | |
| 136 develop(intx, G1PrintRegionLivenessInfo, 0, \ | |
| 137 "When > 0, print the occupancies of the <n> best and worst" \ | |
| 138 "regions.") \ | |
| 139 \ | |
| 140 develop(bool, G1PrintParCleanupStats, false, \ | |
| 141 "When true, print extra stats about parallel cleanup.") \ | |
| 142 \ | |
| 143 develop(bool, G1DisablePreBarrier, false, \ | |
| 144 "Disable generation of pre-barrier (i.e., marking barrier) ") \ | |
| 145 \ | |
| 146 develop(bool, G1DisablePostBarrier, false, \ | |
| 147 "Disable generation of post-barrier (i.e., RS barrier) ") \ | |
| 148 \ | |
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149 product(intx, G1UpdateBufferSize, 256, \ |
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150 "Size of an update buffer") \ |
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151 \ |
| 1282 | 152 product(intx, G1ConcRefinementYellowZone, 0, \ |
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153 "Number of enqueued update buffers that will " \ |
| 1111 | 154 "trigger concurrent processing. Will be selected ergonomically " \ |
| 155 "by default.") \ | |
| 156 \ | |
| 1282 | 157 product(intx, G1ConcRefinementRedZone, 0, \ |
| 1111 | 158 "Maximum number of enqueued update buffers before mutator " \ |
| 159 "threads start processing new ones instead of enqueueing them. " \ | |
| 160 "Will be selected ergonomically by default. Zero will disable " \ | |
| 161 "concurrent processing.") \ | |
| 162 \ | |
| 1282 | 163 product(intx, G1ConcRefinementGreenZone, 0, \ |
| 1111 | 164 "The number of update buffers that are left in the queue by the " \ |
| 165 "concurrent processing threads. Will be selected ergonomically " \ | |
| 166 "by default.") \ | |
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167 \ |
| 1282 | 168 product(intx, G1ConcRefinementServiceIntervalMillis, 300, \ |
| 1111 | 169 "The last concurrent refinement thread wakes up every " \ |
| 170 "specified number of milliseconds to do miscellaneous work.") \ | |
| 171 \ | |
| 1282 | 172 product(intx, G1ConcRefinementThresholdStep, 0, \ |
| 1111 | 173 "Each time the rset update queue increases by this amount " \ |
| 174 "activate the next refinement thread if available. " \ | |
| 175 "Will be selected ergonomically by default.") \ | |
| 176 \ | |
| 1282 | 177 product(intx, G1RSetUpdatingPauseTimePercent, 10, \ |
| 1111 | 178 "A target percentage of time that is allowed to be spend on " \ |
| 179 "process RS update buffers during the collection pause.") \ | |
| 180 \ | |
| 1282 | 181 product(bool, G1UseAdaptiveConcRefinement, true, \ |
| 1111 | 182 "Select green, yellow and red zones adaptively to meet the " \ |
| 183 "the pause requirements.") \ | |
| 342 | 184 \ |
| 185 develop(intx, G1ConcRSLogCacheSize, 10, \ | |
| 186 "Log base 2 of the length of conc RS hot-card cache.") \ | |
| 187 \ | |
| 751 | 188 develop(intx, G1ConcRSHotCardLimit, 4, \ |
| 342 | 189 "The threshold that defines (>=) a hot card.") \ |
| 190 \ | |
| 191 develop(bool, G1PrintOopAppls, false, \ | |
| 192 "When true, print applications of closures to external locs.") \ | |
| 193 \ | |
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194 develop(intx, G1RSetRegionEntriesBase, 256, \ |
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195 "Max number of regions in a fine-grain table per MB.") \ |
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196 \ |
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197 product(intx, G1RSetRegionEntries, 0, \ |
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198 "Max number of regions for which we keep bitmaps." \ |
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199 "Will be set ergonomically by default") \ |
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200 \ |
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201 develop(intx, G1RSetSparseRegionEntriesBase, 4, \ |
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202 "Max number of entries per region in a sparse table " \ |
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203 "per MB.") \ |
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204 \ |
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205 product(intx, G1RSetSparseRegionEntries, 0, \ |
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206 "Max number of entries per region in a sparse table." \ |
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207 "Will be set ergonomically by default.") \ |
| 342 | 208 \ |
| 209 develop(bool, G1RecordHRRSOops, false, \ | |
| 210 "When true, record recent calls to rem set operations.") \ | |
| 211 \ | |
| 212 develop(bool, G1RecordHRRSEvents, false, \ | |
| 213 "When true, record recent calls to rem set operations.") \ | |
| 214 \ | |
| 215 develop(intx, G1MaxVerifyFailures, -1, \ | |
| 216 "The maximum number of verification failrues to print. " \ | |
| 217 "-1 means print all.") \ | |
| 218 \ | |
| 219 develop(bool, G1ScrubRemSets, true, \ | |
| 220 "When true, do RS scrubbing after cleanup.") \ | |
| 221 \ | |
| 222 develop(bool, G1RSScrubVerbose, false, \ | |
| 223 "When true, do RS scrubbing with verbose output.") \ | |
| 224 \ | |
| 225 develop(bool, G1YoungSurvRateVerbose, false, \ | |
| 226 "print out the survival rate of young regions according to age.") \ | |
| 227 \ | |
| 228 develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \ | |
| 229 "the number of regions for which we'll print a surv rate " \ | |
| 230 "summary.") \ | |
| 231 \ | |
| 1282 | 232 develop(bool, G1UseScanOnlyPrefix, false, \ |
| 342 | 233 "It determines whether the system will calculate an optimum " \ |
| 234 "scan-only set.") \ | |
| 235 \ | |
| 1282 | 236 product(intx, G1ReservePercent, 10, \ |
| 342 | 237 "It determines the minimum reserve we should have in the heap " \ |
| 238 "to minimize the probability of promotion failure.") \ | |
| 239 \ | |
| 1282 | 240 diagnostic(bool, G1PrintHeapRegions, false, \ |
| 342 | 241 "If set G1 will print information on which regions are being " \ |
| 242 "allocated and which are reclaimed.") \ | |
| 243 \ | |
| 244 develop(bool, G1HRRSUseSparseTable, true, \ | |
| 245 "When true, use sparse table to save space.") \ | |
| 246 \ | |
| 247 develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \ | |
| 248 "Forces flushing of log buffers before verification.") \ | |
| 249 \ | |
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250 develop(bool, G1FailOnFPError, false, \ |
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251 "When set, G1 will fail when it encounters an FP 'error', " \ |
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252 "so as to allow debugging") \ |
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253 \ |
| 751 | 254 develop(bool, G1FixedTenuringThreshold, false, \ |
| 545 | 255 "When set, G1 will not adjust the tenuring threshold") \ |
| 256 \ | |
| 751 | 257 develop(bool, G1FixedEdenSize, false, \ |
| 545 | 258 "When set, G1 will not allocate unused survivor space regions") \ |
| 259 \ | |
| 751 | 260 develop(uintx, G1FixedSurvivorSpaceSize, 0, \ |
| 545 | 261 "If non-0 is the size of the G1 survivor space, " \ |
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262 "otherwise SurvivorRatio is used to determine the size") \ |
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263 \ |
| 1282 | 264 product(bool, G1UseFixedWindowMMUTracker, false, \ |
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265 "If the MMU tracker's memory is full, forget the oldest entry") \ |
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266 \ |
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267 product(uintx, G1HeapRegionSize, 0, \ |
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268 "Size of the G1 regions.") \ |
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269 \ |
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270 experimental(bool, G1UseParallelRSetUpdating, true, \ |
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271 "Enables the parallelization of remembered set updating " \ |
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272 "during evacuation pauses") \ |
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273 \ |
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274 experimental(bool, G1UseParallelRSetScanning, true, \ |
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275 "Enables the parallelization of remembered set scanning " \ |
| 794 | 276 "during evacuation pauses") \ |
| 277 \ | |
| 1282 | 278 product(uintx, G1ConcRefinementThreads, 0, \ |
| 794 | 279 "If non-0 is the number of parallel rem set update threads, " \ |
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280 "otherwise the value is determined ergonomically.") \ |
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281 \ |
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282 develop(intx, G1CardCountCacheExpandThreshold, 16, \ |
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283 "Expand the card count cache if the number of collisions for " \ |
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284 "a particular entry exceeds this value.") \ |
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285 \ |
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286 develop(bool, G1VerifyCTCleanup, false, \ |
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287 "Verify card table cleanup.") \ |
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288 \ |
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289 product(uintx, G1RSetScanBlockSize, 64, \ |
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290 "Size of a work unit of cards claimed by a worker thread" \ |
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291 "during RSet scanning.") \ |
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292 \ |
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293 develop(bool, ReduceInitialCardMarksForG1, false, \ |
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ysr
parents:
1111
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changeset
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294 "When ReduceInitialCardMarks is true, this flag setting " \ |
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34fb2662f6c2
6920090: G1: Disable ReduceInitialCardMarks at least until 6920109 is fixed
ysr
parents:
1111
diff
changeset
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295 " controls whether G1 allows the RICM optimization") |
| 342 | 296 |
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350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
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342
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changeset
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297 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) |