Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/g1_globals.hpp @ 936:e1fdf4fd34dc
6871111: G1: remove the concurrent overhead tracker
Summary: Removing the concurrent overhead tracker from G1, along with the GC overhead reporter and the G1AccountConcurrentOverhead (both of which rely on the the concurrent overhead tracker).
Reviewed-by: iveresov, johnc
author | tonyp |
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date | Wed, 19 Aug 2009 12:53:25 -0400 |
parents | 6cb8e9df7174 |
children | 8624da129f0b |
rev | line source |
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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 \ | |
40 product(intx, G1YoungGenSize, 0, \ | |
41 "Size of the G1 young generation, 0 is the adaptive policy") \ | |
42 \ | |
751 | 43 develop(bool, G1Gen, true, \ |
342 | 44 "If true, it will enable the generational G1") \ |
45 \ | |
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46 develop(intx, G1GCPercent, 10, \ |
342 | 47 "The desired percent time spent on GC") \ |
48 \ | |
751 | 49 develop(intx, G1PolicyVerbose, 0, \ |
342 | 50 "The verbosity level on G1 policy decisions") \ |
51 \ | |
52 develop(bool, G1UseHRIntoRS, true, \ | |
53 "Determines whether the 'advanced' HR Into rem set is used.") \ | |
54 \ | |
55 develop(intx, G1MarkingVerboseLevel, 0, \ | |
56 "Level (0-4) of verboseness of the marking code") \ | |
57 \ | |
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58 develop(bool, G1VerifyConcMarkPrintReachable, false, \ |
342 | 59 "If conc mark verification fails, print reachable objects") \ |
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 \ | |
751 | 67 diagnostic(bool, G1SummarizeConcurrentMark, 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 \ | |
751 | 82 develop(bool, G1TraceConcurrentRefinement, false, \ |
342 | 83 "Trace G1 concurrent refinement") \ |
84 \ | |
751 | 85 product(intx, G1MarkStackSize, 2 * 1024 * 1024, \ |
342 | 86 "Size of the mark stack for concurrent marking.") \ |
87 \ | |
751 | 88 product(intx, G1MarkRegionStackSize, 1024 * 1024, \ |
342 | 89 "Size of the region stack for concurrent marking.") \ |
90 \ | |
91 develop(bool, G1ConcRefine, true, \ | |
92 "If true, run concurrent rem set refinement for G1") \ | |
93 \ | |
94 develop(intx, G1ConcRefineTargTraversals, 4, \ | |
95 "Number of concurrent refinement we try to achieve") \ | |
96 \ | |
97 develop(intx, G1ConcRefineInitialDelta, 4, \ | |
98 "Number of heap regions of alloc ahead of starting collection " \ | |
99 "pause to start concurrent refinement (initially)") \ | |
100 \ | |
751 | 101 develop(bool, G1SmoothConcRefine, true, \ |
342 | 102 "Attempts to smooth out the overhead of concurrent refinement") \ |
103 \ | |
104 develop(bool, G1ConcZeroFill, true, \ | |
105 "If true, run concurrent zero-filling thread") \ | |
106 \ | |
107 develop(intx, G1ConcZFMaxRegions, 1, \ | |
108 "Stop zero-filling when # of zf'd regions reaches") \ | |
109 \ | |
110 product(intx, G1SteadyStateUsed, 90, \ | |
111 "If non-0, try to maintain 'used' at this pct (of max)") \ | |
112 \ | |
113 product(intx, G1SteadyStateUsedDelta, 30, \ | |
114 "If G1SteadyStateUsed is non-0, then do pause this number of " \ | |
115 "of percentage points earlier if no marking is in progress.") \ | |
116 \ | |
117 develop(bool, G1SATBBarrierPrintNullPreVals, false, \ | |
118 "If true, count frac of ptr writes with null pre-vals.") \ | |
119 \ | |
120 product(intx, G1SATBLogBufferSize, 1*K, \ | |
121 "Number of entries in an SATB log buffer.") \ | |
122 \ | |
123 product(intx, G1SATBProcessCompletedThreshold, 20, \ | |
124 "Number of completed buffers that triggers log processing.") \ | |
125 \ | |
126 develop(intx, G1ExtraRegionSurvRate, 33, \ | |
127 "If the young survival rate is S, and there's room left in " \ | |
128 "to-space, we will allow regions whose survival rate is up to " \ | |
129 "S + (1 - S)*X, where X is this parameter (as a fraction.)") \ | |
130 \ | |
131 develop(intx, G1InitYoungSurvRatio, 50, \ | |
132 "Expected Survival Rate for newly allocated bytes") \ | |
133 \ | |
134 develop(bool, G1SATBPrintStubs, false, \ | |
135 "If true, print generated stubs for the SATB barrier") \ | |
136 \ | |
751 | 137 product(intx, G1ExpandByPercentOfAvailable, 20, \ |
342 | 138 "When expanding, % of uncommitted space to claim.") \ |
139 \ | |
140 develop(bool, G1RSBarrierRegionFilter, true, \ | |
141 "If true, generate region filtering code in RS barrier") \ | |
142 \ | |
143 develop(bool, G1RSBarrierNullFilter, true, \ | |
144 "If true, generate null-pointer filtering code in RS barrier") \ | |
145 \ | |
146 develop(bool, G1PrintCTFilterStats, false, \ | |
147 "If true, print stats on RS filtering effectiveness") \ | |
148 \ | |
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149 develop(bool, G1DeferredRSUpdate, true, \ |
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150 "If true, use deferred RS updates") \ |
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151 \ |
342 | 152 develop(bool, G1RSLogCheckCardTable, false, \ |
153 "If true, verify that no dirty cards remain after RS log " \ | |
154 "processing.") \ | |
155 \ | |
156 develop(bool, G1RSCountHisto, false, \ | |
157 "If true, print a histogram of RS occupancies after each pause") \ | |
158 \ | |
159 develop(intx, G1PrintRegionLivenessInfo, 0, \ | |
160 "When > 0, print the occupancies of the <n> best and worst" \ | |
161 "regions.") \ | |
162 \ | |
163 develop(bool, G1PrintParCleanupStats, false, \ | |
164 "When true, print extra stats about parallel cleanup.") \ | |
165 \ | |
166 develop(bool, G1DisablePreBarrier, false, \ | |
167 "Disable generation of pre-barrier (i.e., marking barrier) ") \ | |
168 \ | |
169 develop(bool, G1DisablePostBarrier, false, \ | |
170 "Disable generation of post-barrier (i.e., RS barrier) ") \ | |
171 \ | |
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172 product(intx, G1UpdateBufferSize, 256, \ |
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173 "Size of an update buffer") \ |
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174 \ |
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175 product(intx, G1UpdateBufferQueueProcessingThreshold, 5, \ |
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176 "Number of enqueued update buffers that will " \ |
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177 "trigger concurrent processing") \ |
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178 \ |
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179 product(intx, G1UpdateBufferQueueMaxLength, 30, \ |
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180 "Maximum number of enqueued update buffers before mutator " \ |
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181 "threads start processing new ones instead of enqueueing them") \ |
342 | 182 \ |
183 develop(intx, G1ConcRSLogCacheSize, 10, \ | |
184 "Log base 2 of the length of conc RS hot-card cache.") \ | |
185 \ | |
751 | 186 develop(intx, G1ConcRSHotCardLimit, 4, \ |
342 | 187 "The threshold that defines (>=) a hot card.") \ |
188 \ | |
189 develop(bool, G1PrintOopAppls, false, \ | |
190 "When true, print applications of closures to external locs.") \ | |
191 \ | |
751 | 192 develop(intx, G1LogRSRegionEntries, 7, \ |
342 | 193 "Log_2 of max number of regions for which we keep bitmaps.") \ |
194 \ | |
195 develop(bool, G1RecordHRRSOops, false, \ | |
196 "When true, record recent calls to rem set operations.") \ | |
197 \ | |
198 develop(bool, G1RecordHRRSEvents, false, \ | |
199 "When true, record recent calls to rem set operations.") \ | |
200 \ | |
201 develop(intx, G1MaxVerifyFailures, -1, \ | |
202 "The maximum number of verification failrues to print. " \ | |
203 "-1 means print all.") \ | |
204 \ | |
205 develop(bool, G1ScrubRemSets, true, \ | |
206 "When true, do RS scrubbing after cleanup.") \ | |
207 \ | |
208 develop(bool, G1RSScrubVerbose, false, \ | |
209 "When true, do RS scrubbing with verbose output.") \ | |
210 \ | |
211 develop(bool, G1YoungSurvRateVerbose, false, \ | |
212 "print out the survival rate of young regions according to age.") \ | |
213 \ | |
214 develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \ | |
215 "the number of regions for which we'll print a surv rate " \ | |
216 "summary.") \ | |
217 \ | |
218 product(bool, G1UseScanOnlyPrefix, false, \ | |
219 "It determines whether the system will calculate an optimum " \ | |
220 "scan-only set.") \ | |
221 \ | |
751 | 222 product(intx, G1MinReservePercent, 10, \ |
342 | 223 "It determines the minimum reserve we should have in the heap " \ |
224 "to minimize the probability of promotion failure.") \ | |
225 \ | |
751 | 226 diagnostic(bool, G1PrintRegions, false, \ |
342 | 227 "If set G1 will print information on which regions are being " \ |
228 "allocated and which are reclaimed.") \ | |
229 \ | |
230 develop(bool, G1HRRSUseSparseTable, true, \ | |
231 "When true, use sparse table to save space.") \ | |
232 \ | |
233 develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \ | |
234 "Forces flushing of log buffers before verification.") \ | |
235 \ | |
751 | 236 product(bool, G1UseSurvivorSpaces, true, \ |
545 | 237 "When true, use survivor space.") \ |
238 \ | |
751 | 239 develop(bool, G1FixedTenuringThreshold, false, \ |
545 | 240 "When set, G1 will not adjust the tenuring threshold") \ |
241 \ | |
751 | 242 develop(bool, G1FixedEdenSize, false, \ |
545 | 243 "When set, G1 will not allocate unused survivor space regions") \ |
244 \ | |
751 | 245 develop(uintx, G1FixedSurvivorSpaceSize, 0, \ |
545 | 246 "If non-0 is the size of the G1 survivor space, " \ |
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247 "otherwise SurvivorRatio is used to determine the size") \ |
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248 \ |
751 | 249 experimental(bool, G1ParallelRSetUpdatingEnabled, false, \ |
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250 "Enables the parallelization of remembered set updating " \ |
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251 "during evacuation pauses") \ |
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252 \ |
751 | 253 experimental(bool, G1ParallelRSetScanningEnabled, false, \ |
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254 "Enables the parallelization of remembered set scanning " \ |
794 | 255 "during evacuation pauses") \ |
256 \ | |
257 product(uintx, G1ParallelRSetThreads, 0, \ | |
258 "If non-0 is the number of parallel rem set update threads, " \ | |
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259 "otherwise the value is determined ergonomically.") \ |
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260 \ |
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261 develop(intx, G1CardCountCacheExpandThreshold, 16, \ |
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262 "Expand the card count cache if the number of collisions for " \ |
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263 "a particular entry exceeds this value.") |
342 | 264 |
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265 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) |