146 "concurrent processing threads. Will be selected ergonomically " \
147 "by default.") \
148 \
149 product(intx, G1ConcRefinementServiceIntervalMillis, 300, \
150 "The last concurrent refinement thread wakes up every " \
151 "specified number of milliseconds to do miscellaneous work.") \
152 \
153 product(intx, G1ConcRefinementThresholdStep, 0, \
154 "Each time the rset update queue increases by this amount " \
155 "activate the next refinement thread if available. " \
156 "Will be selected ergonomically by default.") \
157 \
158 product(intx, G1RSetUpdatingPauseTimePercent, 10, \
159 "A target percentage of time that is allowed to be spend on " \
160 "process RS update buffers during the collection pause.") \
161 \
162 product(bool, G1UseAdaptiveConcRefinement, true, \
163 "Select green, yellow and red zones adaptively to meet the " \
164 "the pause requirements.") \
165 \
166 develop(intx, G1ConcRSLogCacheSize, 10, \
167 "Log base 2 of the length of conc RS hot-card cache.") \
168 \
169 develop(intx, G1ConcRSHotCardLimit, 4, \
170 "The threshold that defines (>=) a hot card.") \
171 \
172 develop(intx, G1MaxHotCardCountSizePercent, 25, \
173 "The maximum size of the hot card count cache as a " \
174 "percentage of the number of cards for the maximum heap.") \
175 \
176 develop(bool, G1PrintOopAppls, false, \
177 "When true, print applications of closures to external locs.") \
178 \
179 develop(intx, G1RSetRegionEntriesBase, 256, \
180 "Max number of regions in a fine-grain table per MB.") \
181 \
182 product(intx, G1RSetRegionEntries, 0, \
183 "Max number of regions for which we keep bitmaps." \
184 "Will be set ergonomically by default") \
185 \
186 develop(intx, G1RSetSparseRegionEntriesBase, 4, \
187 "Max number of entries per region in a sparse table " \
188 "per MB.") \
189 \
190 product(intx, G1RSetSparseRegionEntries, 0, \
191 "Max number of entries per region in a sparse table." \
192 "Will be set ergonomically by default.") \
193 \
194 develop(bool, G1RecordHRRSOops, false, \
195 "When true, record recent calls to rem set operations.") \
230 \
231 develop(bool, G1FailOnFPError, false, \
232 "When set, G1 will fail when it encounters an FP 'error', " \
233 "so as to allow debugging") \
234 \
235 product(uintx, G1HeapRegionSize, 0, \
236 "Size of the G1 regions.") \
237 \
238 experimental(bool, G1UseParallelRSetUpdating, true, \
239 "Enables the parallelization of remembered set updating " \
240 "during evacuation pauses") \
241 \
242 experimental(bool, G1UseParallelRSetScanning, true, \
243 "Enables the parallelization of remembered set scanning " \
244 "during evacuation pauses") \
245 \
246 product(uintx, G1ConcRefinementThreads, 0, \
247 "If non-0 is the number of parallel rem set update threads, " \
248 "otherwise the value is determined ergonomically.") \
249 \
250 develop(intx, G1CardCountCacheExpandThreshold, 16, \
251 "Expand the card count cache if the number of collisions for " \
252 "a particular entry exceeds this value.") \
253 \
254 develop(bool, G1VerifyCTCleanup, false, \
255 "Verify card table cleanup.") \
256 \
257 product(uintx, G1RSetScanBlockSize, 64, \
258 "Size of a work unit of cards claimed by a worker thread" \
259 "during RSet scanning.") \
260 \
261 develop(uintx, G1SecondaryFreeListAppendLength, 5, \
262 "The number of regions we will add to the secondary free list " \
263 "at every append operation") \
264 \
265 develop(bool, G1ConcRegionFreeingVerbose, false, \
266 "Enables verboseness during concurrent region freeing") \
267 \
268 develop(bool, G1StressConcRegionFreeing, false, \
269 "It stresses the concurrent region freeing operation") \
270 \
271 develop(uintx, G1StressConcRegionFreeingDelayMillis, 0, \
272 "Artificial delay during concurrent region freeing") \
273 \
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146 "concurrent processing threads. Will be selected ergonomically " \
147 "by default.") \
148 \
149 product(intx, G1ConcRefinementServiceIntervalMillis, 300, \
150 "The last concurrent refinement thread wakes up every " \
151 "specified number of milliseconds to do miscellaneous work.") \
152 \
153 product(intx, G1ConcRefinementThresholdStep, 0, \
154 "Each time the rset update queue increases by this amount " \
155 "activate the next refinement thread if available. " \
156 "Will be selected ergonomically by default.") \
157 \
158 product(intx, G1RSetUpdatingPauseTimePercent, 10, \
159 "A target percentage of time that is allowed to be spend on " \
160 "process RS update buffers during the collection pause.") \
161 \
162 product(bool, G1UseAdaptiveConcRefinement, true, \
163 "Select green, yellow and red zones adaptively to meet the " \
164 "the pause requirements.") \
165 \
166 product(uintx, G1ConcRSLogCacheSize, 10, \
167 "Log base 2 of the length of conc RS hot-card cache.") \
168 \
169 product(uintx, G1ConcRSHotCardLimit, 4, \
170 "The threshold that defines (>=) a hot card.") \
171 \
172 develop(bool, G1PrintOopAppls, false, \
173 "When true, print applications of closures to external locs.") \
174 \
175 develop(intx, G1RSetRegionEntriesBase, 256, \
176 "Max number of regions in a fine-grain table per MB.") \
177 \
178 product(intx, G1RSetRegionEntries, 0, \
179 "Max number of regions for which we keep bitmaps." \
180 "Will be set ergonomically by default") \
181 \
182 develop(intx, G1RSetSparseRegionEntriesBase, 4, \
183 "Max number of entries per region in a sparse table " \
184 "per MB.") \
185 \
186 product(intx, G1RSetSparseRegionEntries, 0, \
187 "Max number of entries per region in a sparse table." \
188 "Will be set ergonomically by default.") \
189 \
190 develop(bool, G1RecordHRRSOops, false, \
191 "When true, record recent calls to rem set operations.") \
226 \
227 develop(bool, G1FailOnFPError, false, \
228 "When set, G1 will fail when it encounters an FP 'error', " \
229 "so as to allow debugging") \
230 \
231 product(uintx, G1HeapRegionSize, 0, \
232 "Size of the G1 regions.") \
233 \
234 experimental(bool, G1UseParallelRSetUpdating, true, \
235 "Enables the parallelization of remembered set updating " \
236 "during evacuation pauses") \
237 \
238 experimental(bool, G1UseParallelRSetScanning, true, \
239 "Enables the parallelization of remembered set scanning " \
240 "during evacuation pauses") \
241 \
242 product(uintx, G1ConcRefinementThreads, 0, \
243 "If non-0 is the number of parallel rem set update threads, " \
244 "otherwise the value is determined ergonomically.") \
245 \
246 develop(bool, G1VerifyCTCleanup, false, \
247 "Verify card table cleanup.") \
248 \
249 product(uintx, G1RSetScanBlockSize, 64, \
250 "Size of a work unit of cards claimed by a worker thread" \
251 "during RSet scanning.") \
252 \
253 develop(uintx, G1SecondaryFreeListAppendLength, 5, \
254 "The number of regions we will add to the secondary free list " \
255 "at every append operation") \
256 \
257 develop(bool, G1ConcRegionFreeingVerbose, false, \
258 "Enables verboseness during concurrent region freeing") \
259 \
260 develop(bool, G1StressConcRegionFreeing, false, \
261 "It stresses the concurrent region freeing operation") \
262 \
263 develop(uintx, G1StressConcRegionFreeingDelayMillis, 0, \
264 "Artificial delay during concurrent region freeing") \
265 \
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