CMS collection keep working during holiday dragonken at
Mon Oct 6 16:44:47 UTC 2008

Thanks for your quick response. The application started at 1/10 was crash
this morning. I lost the gc log file as I quickly restart the application to
avoid service interruption to our clients.

>From the hotspot error file(attached), it show that it crash when old
generation 99% full. Anyway, it's another problem. hs_err_pid2476.log 

I have another application with similar JVM options set and have exactly

JVM Options: -XX:+PrintGCDetails
-XX:+PrintGCTaskTimeStamps -XX:+PrintHeapAtGC -Xloggc:hkexquoteserver_gc.log
-Xms4G -Xmx4G -XX:NewSize=1G -XX:MaxNewSize=1G
-XX:+PrintTenuringDistribution -XX:+DisableExplicitGC
-XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:SurvivorRatio=4
-XX:CMSInitiatingOccupancyFraction=70 -XX:TargetSurvivorRatio=90 

GC Logs: 


- long lasting CMSs from 426789 to 504376
- CMS cannot free space in old generation within this period. What I
expected is to free old-gen memory to around 500M full at 426789.
- concurrent mode failure at 504379

Thanks and Best Regards,

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