--- a/hotspot/src/share/vm/runtime/globals.hpp Wed Dec 16 15:12:51 2009 -0800
+++ b/hotspot/src/share/vm/runtime/globals.hpp Wed Dec 23 09:23:54 2009 -0800
@@ -1355,10 +1355,46 @@
product(uintx, ParGCDesiredObjsFromOverflowList, 20, \
"The desired number of objects to claim from the overflow list") \
\
- product(uintx, CMSParPromoteBlocksToClaim, 50, \
+ product(uintx, CMSParPromoteBlocksToClaim, 16, \
"Number of blocks to attempt to claim when refilling CMS LAB for "\
"parallel GC.") \
\
+ product(uintx, OldPLABWeight, 50, \
+ "Percentage (0-100) used to weight the current sample when" \
+ "computing exponentially decaying average for resizing CMSParPromoteBlocksToClaim.") \
+ \
+ product(bool, ResizeOldPLAB, true, \
+ "Dynamically resize (old gen) promotion labs") \
+ \
+ product(bool, PrintOldPLAB, false, \
+ "Print (old gen) promotion labs sizing decisions") \
+ \
+ product(uintx, CMSOldPLABMin, 16, \
+ "Min size of CMS gen promotion lab caches per worker per blksize")\
+ \
+ product(uintx, CMSOldPLABMax, 1024, \
+ "Max size of CMS gen promotion lab caches per worker per blksize")\
+ \
+ product(uintx, CMSOldPLABNumRefills, 4, \
+ "Nominal number of refills of CMS gen promotion lab cache" \
+ " per worker per block size") \
+ \
+ product(bool, CMSOldPLABResizeQuicker, false, \
+ "Whether to react on-the-fly during a scavenge to a sudden" \
+ " change in block demand rate") \
+ \
+ product(uintx, CMSOldPLABToleranceFactor, 4, \
+ "The tolerance of the phase-change detector for on-the-fly" \
+ " PLAB resizing during a scavenge") \
+ \
+ product(uintx, CMSOldPLABReactivityFactor, 2, \
+ "The gain in the feedback loop for on-the-fly PLAB resizing" \
+ " during a scavenge") \
+ \
+ product(uintx, CMSOldPLABReactivityCeiling, 10, \
+ "The clamping of the gain in the feedback loop for on-the-fly" \
+ " PLAB resizing during a scavenge") \
+ \
product(bool, AlwaysPreTouch, false, \
"It forces all freshly committed pages to be pre-touched.") \
\
@@ -1400,27 +1436,54 @@
"Percentage (0-100) by which the CMS incremental mode duty cycle" \
" is shifted to the right within the period between young GCs") \
\
- product(uintx, CMSExpAvgFactor, 25, \
- "Percentage (0-100) used to weight the current sample when " \
- "computing exponential averages for CMS statistics") \
- \
- product(uintx, CMS_FLSWeight, 50, \
- "Percentage (0-100) used to weight the current sample when " \
- "computing exponentially decating averages for CMS FLS statistics") \
- \
- product(uintx, CMS_FLSPadding, 2, \
- "The multiple of deviation from mean to use for buffering " \
+ product(uintx, CMSExpAvgFactor, 50, \
+ "Percentage (0-100) used to weight the current sample when" \
+ "computing exponential averages for CMS statistics.") \
+ \
+ product(uintx, CMS_FLSWeight, 75, \
+ "Percentage (0-100) used to weight the current sample when" \
+ "computing exponentially decating averages for CMS FLS statistics.") \
+ \
+ product(uintx, CMS_FLSPadding, 1, \
+ "The multiple of deviation from mean to use for buffering" \
"against volatility in free list demand.") \
\
product(uintx, FLSCoalescePolicy, 2, \
"CMS: Aggression level for coalescing, increasing from 0 to 4") \
\
- product(uintx, CMS_SweepWeight, 50, \
+ product(bool, FLSAlwaysCoalesceLarge, false, \
+ "CMS: Larger free blocks are always available for coalescing") \
+ \
+ product(double, FLSLargestBlockCoalesceProximity, 0.99, \
+ "CMS: the smaller the percentage the greater the coalition force")\
+ \
+ product(double, CMSSmallCoalSurplusPercent, 1.05, \
+ "CMS: the factor by which to inflate estimated demand of small" \
+ " block sizes to prevent coalescing with an adjoining block") \
+ \
+ product(double, CMSLargeCoalSurplusPercent, 0.95, \
+ "CMS: the factor by which to inflate estimated demand of large" \
+ " block sizes to prevent coalescing with an adjoining block") \
+ \
+ product(double, CMSSmallSplitSurplusPercent, 1.10, \
+ "CMS: the factor by which to inflate estimated demand of small" \
+ " block sizes to prevent splitting to supply demand for smaller" \
+ " blocks") \
+ \
+ product(double, CMSLargeSplitSurplusPercent, 1.00, \
+ "CMS: the factor by which to inflate estimated demand of large" \
+ " block sizes to prevent splitting to supply demand for smaller" \
+ " blocks") \
+ \
+ product(bool, CMSExtrapolateSweep, false, \
+ "CMS: cushion for block demand during sweep") \
+ \
+ product(uintx, CMS_SweepWeight, 75, \
"Percentage (0-100) used to weight the current sample when " \
"computing exponentially decaying average for inter-sweep " \
"duration") \
\
- product(uintx, CMS_SweepPadding, 2, \
+ product(uintx, CMS_SweepPadding, 1, \
"The multiple of deviation from mean to use for buffering " \
"against volatility in inter-sweep duration.") \
\
@@ -1459,6 +1522,13 @@
product(uintx, CMSIndexedFreeListReplenish, 4, \
"Replenish and indexed free list with this number of chunks") \
\
+ product(bool, CMSReplenishIntermediate, true, \
+ "Replenish all intermediate free-list caches") \
+ \
+ product(bool, CMSSplitIndexedFreeListBlocks, true, \
+ "When satisfying batched demand, splot blocks from the " \
+ "IndexedFreeList whose size is a multiple of requested size") \
+ \
product(bool, CMSLoopWarn, false, \
"Warn in case of excessive CMS looping") \
\
@@ -1593,6 +1663,18 @@
"Bitmap operations should process at most this many bits" \
"between yields") \
\
+ product(bool, CMSDumpAtPromotionFailure, false, \
+ "Dump useful information about the state of the CMS old " \
+ " generation upon a promotion failure.") \
+ \
+ product(bool, CMSPrintChunksInDump, false, \
+ "In a dump enabled by CMSDumpAtPromotionFailure, include " \
+ " more detailed information about the free chunks.") \
+ \
+ product(bool, CMSPrintObjectsInDump, false, \
+ "In a dump enabled by CMSDumpAtPromotionFailure, include " \
+ " more detailed information about the allocated objects.") \
+ \
diagnostic(bool, FLSVerifyAllHeapReferences, false, \
"Verify that all refs across the FLS boundary " \
" are to valid objects") \
@@ -1677,6 +1759,10 @@
"The youngest generation collection does not require " \
"a guarantee of full promotion of all live objects.") \
\
+ product(bool, PrintPromotionFailure, false, \
+ "Print additional diagnostic information following " \
+ " promotion failure") \
+ \
notproduct(bool, PromotionFailureALot, false, \
"Use promotion failure handling on every youngest generation " \
"collection") \