83 "it also requires -XX:+G1SummarizeRSetStats") \ |
83 "it also requires -XX:+G1SummarizeRSetStats") \ |
84 \ |
84 \ |
85 diagnostic(bool, G1SummarizeZFStats, false, \ |
85 diagnostic(bool, G1SummarizeZFStats, false, \ |
86 "Summarize zero-filling info") \ |
86 "Summarize zero-filling info") \ |
87 \ |
87 \ |
88 develop(bool, G1TraceConcurrentRefinement, false, \ |
88 diagnostic(bool, G1TraceConcurrentRefinement, false, \ |
89 "Trace G1 concurrent refinement") \ |
89 "Trace G1 concurrent refinement") \ |
90 \ |
90 \ |
91 product(intx, G1MarkStackSize, 2 * 1024 * 1024, \ |
91 product(intx, G1MarkStackSize, 2 * 1024 * 1024, \ |
92 "Size of the mark stack for concurrent marking.") \ |
92 "Size of the mark stack for concurrent marking.") \ |
93 \ |
93 \ |
94 product(intx, G1MarkRegionStackSize, 1024 * 1024, \ |
94 product(intx, G1MarkRegionStackSize, 1024 * 1024, \ |
95 "Size of the region stack for concurrent marking.") \ |
95 "Size of the region stack for concurrent marking.") \ |
96 \ |
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97 develop(bool, G1ConcRefine, true, \ |
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98 "If true, run concurrent rem set refinement for G1") \ |
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99 \ |
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100 develop(intx, G1ConcRefineTargTraversals, 4, \ |
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101 "Number of concurrent refinement we try to achieve") \ |
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102 \ |
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103 develop(intx, G1ConcRefineInitialDelta, 4, \ |
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104 "Number of heap regions of alloc ahead of starting collection " \ |
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105 "pause to start concurrent refinement (initially)") \ |
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106 \ |
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107 develop(bool, G1SmoothConcRefine, true, \ |
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108 "Attempts to smooth out the overhead of concurrent refinement") \ |
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109 \ |
96 \ |
110 develop(bool, G1ConcZeroFill, true, \ |
97 develop(bool, G1ConcZeroFill, true, \ |
111 "If true, run concurrent zero-filling thread") \ |
98 "If true, run concurrent zero-filling thread") \ |
112 \ |
99 \ |
113 develop(intx, G1ConcZFMaxRegions, 1, \ |
100 develop(intx, G1ConcZFMaxRegions, 1, \ |
176 "Disable generation of post-barrier (i.e., RS barrier) ") \ |
163 "Disable generation of post-barrier (i.e., RS barrier) ") \ |
177 \ |
164 \ |
178 product(intx, G1UpdateBufferSize, 256, \ |
165 product(intx, G1UpdateBufferSize, 256, \ |
179 "Size of an update buffer") \ |
166 "Size of an update buffer") \ |
180 \ |
167 \ |
181 product(intx, G1UpdateBufferQueueProcessingThreshold, 5, \ |
168 product(intx, G1ConcRefineYellowZone, 0, \ |
182 "Number of enqueued update buffers that will " \ |
169 "Number of enqueued update buffers that will " \ |
183 "trigger concurrent processing") \ |
170 "trigger concurrent processing. Will be selected ergonomically " \ |
184 \ |
171 "by default.") \ |
185 product(intx, G1UpdateBufferQueueMaxLength, 30, \ |
172 \ |
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173 product(intx, G1ConcRefineRedZone, 0, \ |
186 "Maximum number of enqueued update buffers before mutator " \ |
174 "Maximum number of enqueued update buffers before mutator " \ |
187 "threads start processing new ones instead of enqueueing them") \ |
175 "threads start processing new ones instead of enqueueing them. " \ |
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176 "Will be selected ergonomically by default. Zero will disable " \ |
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177 "concurrent processing.") \ |
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178 \ |
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179 product(intx, G1ConcRefineGreenZone, 0, \ |
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180 "The number of update buffers that are left in the queue by the " \ |
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181 "concurrent processing threads. Will be selected ergonomically " \ |
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182 "by default.") \ |
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183 \ |
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184 product(intx, G1ConcRefineServiceInterval, 300, \ |
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185 "The last concurrent refinement thread wakes up every " \ |
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186 "specified number of milliseconds to do miscellaneous work.") \ |
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187 \ |
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188 product(intx, G1ConcRefineThresholdStep, 0, \ |
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189 "Each time the rset update queue increases by this amount " \ |
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190 "activate the next refinement thread if available. " \ |
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191 "Will be selected ergonomically by default.") \ |
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192 \ |
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193 product(intx, G1RSUpdatePauseFractionPercent, 10, \ |
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194 "A target percentage of time that is allowed to be spend on " \ |
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195 "process RS update buffers during the collection pause.") \ |
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196 \ |
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197 product(bool, G1AdaptiveConcRefine, true, \ |
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198 "Select green, yellow and red zones adaptively to meet the " \ |
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199 "the pause requirements.") \ |
188 \ |
200 \ |
189 develop(intx, G1ConcRSLogCacheSize, 10, \ |
201 develop(intx, G1ConcRSLogCacheSize, 10, \ |
190 "Log base 2 of the length of conc RS hot-card cache.") \ |
202 "Log base 2 of the length of conc RS hot-card cache.") \ |
191 \ |
203 \ |
192 develop(intx, G1ConcRSHotCardLimit, 4, \ |
204 develop(intx, G1ConcRSHotCardLimit, 4, \ |