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comparison src/share/vm/runtime/globals.hpp @ 2368:dde920245681

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6896099: Integrate CMS heap ergo with default heap sizing ergo 6627787: CMS: JVM refuses to start up with -Xms16m -Xmx16m 7000125: CMS: Anti-monotone young gen sizing with respect to maximum whole heap size specification 7027529: CMS: retire CMSUseOldDefaults flag Summary: Simplify CMS heap sizing code, relying on ergonomic initial sizing consistent with other collectors for the most part, controlling only young gen sizing to rein in pause times. Make CMS young gen sizing default statically cpu-dependant. Remove inconsistencies wrt generation sizing and policy code, allowing for the fixing for 6627787 and 7000125. For 7027529, retire the flag CMSUseOldDefaults which had been introduced as a bridge from JDK 5 to JDK 6 a number of years ago. Reviewed-by: brutisso, poonam
author ysr
date Wed, 16 Mar 2011 10:37:08 -0700
parents a2c2eac1ca62
children 048f98400b8e
comparison
equal deleted inserted replaced
2367:1abd292f8c38 2368:dde920245681
1538 " PLAB resizing during a scavenge") \ 1538 " PLAB resizing during a scavenge") \
1539 \ 1539 \
1540 product(bool, AlwaysPreTouch, false, \ 1540 product(bool, AlwaysPreTouch, false, \
1541 "It forces all freshly committed pages to be pre-touched.") \ 1541 "It forces all freshly committed pages to be pre-touched.") \
1542 \ 1542 \
1543 product(bool, CMSUseOldDefaults, false, \ 1543 product_pd(intx, CMSYoungGenPerWorker, \
1544 "A flag temporarily introduced to allow reverting to some " \ 1544 "The maximum size of young gen chosen by default per GC worker " \
1545 "older default settings; older as of 6.0") \
1546 \
1547 product(intx, CMSYoungGenPerWorker, 16*M, \
1548 "The amount of young gen chosen by default per GC worker " \
1549 "thread available") \ 1545 "thread available") \
1550 \ 1546 \
1551 product(bool, GCOverheadReporting, false, \ 1547 product(bool, GCOverheadReporting, false, \
1552 "Enables the GC overhead reporting facility") \ 1548 "Enables the GC overhead reporting facility") \
1553 \ 1549 \