I ran across a CMS crash bug in Hotspot 10 b19 (OpenJDK6 b11), which is described here:
http://bugs.sun.com/view_bug.do?bug_id=6722116
The symptom is that VM crashes in the concurrent GC thread at the following stack trace (with mangled symbols):
_ZN24YieldingFlexibleWorkGang10start_taskEP24YieldingFlexibleGangTask
_ZN12CMSCollector13do_marking_mtEb
_ZN12CMSCollector13markFromRootsEb
_ZN12CMSCollector21collect_in_backgroundEb
_ZN25ConcurrentMarkSweepThread3runEv
_Z10java_startP6Thread
A workaround is to use the JVM option -XX:-CMSConcurrentMTEnabled to disable the multithreaded CMS collection. Upgrading to the JDK with newer Hotspot is a better idea, though.
No comments:
Post a Comment