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8020151: PSR:PERF Large performance regressions when code cache is filled

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Code cache sweeping based on method hotness; removed speculatively disconnect

Reviewed-by: kvn, iveresov
This commit is contained in:
Albert Noll 2013-09-27 10:50:55 +02:00
parent 441f1d74cf
commit 0dee555ead
15 changed files with 240 additions and 418 deletions
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13
hotspot/src/share/vm/runtime/globals.hpp
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@ -2868,6 +2868,10 @@ class CommandLineFlags {
product(intx, NmethodSweepCheckInterval, 5, \
"Compilers wake up every n seconds to possibly sweep nmethods") \
\
product(intx, NmethodSweepActivity, 10, \
"Removes cold nmethods from code cache if > 0. Higher values " \
"result in more aggressive sweeping") \
\
notproduct(bool, LogSweeper, false, \
"Keep a ring buffer of sweeper activity") \
\
@ -3239,15 +3243,6 @@ class CommandLineFlags {
product(bool, UseCodeCacheFlushing, true, \
"Attempt to clean the code cache before shutting off compiler") \
\
product(intx, MinCodeCacheFlushingInterval, 30, \
"Min number of seconds between code cache cleaning sessions") \
\
product(uintx, CodeCacheFlushingMinimumFreeSpace, 1500*K, \
"When less than X space left, start code cache cleaning") \
\
product(uintx, CodeCacheFlushingFraction, 2, \
"Fraction of the code cache that is flushed when full") \
\
/* interpreter debugging */ \
develop(intx, BinarySwitchThreshold, 5, \
"Minimal number of lookupswitch entries for rewriting to binary " \