Fwd: Reg : Questions for tuning in G1GC

[monish kumar]

Hi Team,

We are hosting a application with 56 Gig of ram among that we have
allocated 36 Gig for Jvm.

I have attached my recent GC Logs please reivew all of that, I have a
question do we really need to have space for permenant generation when we
are using G1GC.

Available processors 8

Here is the Jvm Args we used.

please let me know if anything i need to add or remove args which also i
need to provide valid explanation to my higher officials.

-XX:PermSize=12288m
-XX:MaxPermSize=12288m
-Xms24576m
-Xmx24576m
-Duser.timezone=UTC
-XX:+PrintGCDetails
-XX:+PrintGCDateStamps
-Xloggc: log\gc.log
-XX:+UseGCLogFileRotation
-XX:NumberOfGCLogFiles=10
-XX:GCLogFileSize=10m
-XX:+HeapDumpOnOutOfMemoryError
-XX:ReservedCodeCacheSize=512m
-XX:HeapDumpPath=C:\temp\

-XX:SoftRefLRUPolicyMSPerMB=100
-XX:+UseG1GC
-Dsun.rmi.dgc.server.gcInterval=31536000000
-Dsun.rmi.dgc.client.gcInterval=31536000000
-XX:CMSMaxAbortablePrecleanTime=15000


-- 
Thanks & Regards,
A.Monish Kumar.
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