trims [Fri, 18 Mar 2011 13:28:33 -0700] rev 8691
7028846: Bump the HS21 build number to 05
Summary: Update the HS21 build number to 05
Reviewed-by: jcoomes
trims [Fri, 18 Mar 2011 13:28:29 -0700] rev 8690
Merge
jcoomes [Fri, 18 Mar 2011 09:03:43 -0700] rev 8689
Merge
ysr [Thu, 17 Mar 2011 10:32:46 -0700] rev 8688
6668573: CMS: reference processing crash if ParallelCMSThreads > ParallelGCThreads
Summary: Use _max_num_q = max(discovery_degree, processing_degree), and let balance_queues() redistribute from discovery_degree to processing_degree of queues. This should also allow a more dynamic and flexible parallelism policy in the future.
Reviewed-by: jmasa, johnc
ysr [Wed, 16 Mar 2011 10:37:08 -0700] rev 8687
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
jwilhelm [Tue, 15 Mar 2011 09:07:49 -0700] rev 8686
Merge
jwilhelm [Fri, 11 Mar 2011 16:35:18 +0100] rev 8685
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
Summary: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
Reviewed-by: johnc, jmasa, ysr