Ruchir Choudhry [
http://community.jboss.org/people/ruchirc] replied to the discussion
"Memory consumption 1h after JBoss start"
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Hello,
Please look into the following things, it will surly help you.
01> Your JVM setting is not as per Jboss or Sun Standards. both says the Xms and Xms
need to be same. Try the below setup change it based on your system needs.
-Xmx2048m -Xms2048m -XX:MaxNewSize=256m -XX:NewSize=256m -XX:MaxPermSize=128m
-XX:SurvivorRatio=8 -XX:TargetSurvivorRatio=90 -XX:MaxTenuringThreshold=0
-XX:CMSInitiatingOccupancyFraction=60 -XX:LargePageSizeInBytes=5m -XX:ParallelGCThreads=20
-XX:-DisableExplicitGC -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:ThreadStackSize=1024
-Dsun.rmi.dgc.client.gcInterval=3600000
-Dsun.rmi.dgc.server.gcInterval=3600000
I have listed a series of test on various parameters, as below(link) try to see if you can
grab some info from there.
http://community.jboss.org/docs/DOC-15623?uniqueTitle=false
http://community.jboss.org/docs/DOC-15623?uniqueTitle=false
02> you can also use Visual VM provided by Sun to see if its something induced due to
profiling, I dont see this as a reason but no harm is checking.
03> The the GC cycle when its happening and what is the object left in NEW Gen and Old
Gen, dose it get cleared eventually or its holding up.
04> If its holding up than the problem is with the code, profile it, you will get
explicit details which class, inner class, which method is causing it
05> Are you using a lot of static methords, caching in JVM or large session object
Please let me know how it goes, Publish the machine details too.
Thanks,
Ruchir
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