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From Erik Onnen <eon...@gmail.com>
Subject Re: mslab enabled jvm crash
Date Fri, 27 May 2011 04:17:39 GMT
On Thu, May 26, 2011 at 11:01 AM, Stack <stack@duboce.net> wrote:
> What JVM configs are you running Erik?
> St.Ack

Omitting some of the irrelevant ones...

JAVA_OPTS="-XX:+UseLargePages -Xms8192M -Xmx8192M
-XX:+HeapDumpOnOutOfMemoryError -XX:+UseParNewGC
-XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled
-Xloggc:/mnt/services/hbaseregion/var/log/hbaseregion-gc.log
-XX:+PrintGCDetails -XX:+PrintGCTimeStamps"

For our Cassandra servers we also explicitly pin the new gen tenuring
and occupancy thresholds but that hasn't been necessary for the HBase
workloads so far:

"-XX:MaxTenuringThreshold=1 -XX:CMSInitiatingOccupancyFraction=75
-XX:+UseCMSInitiatingOccupancyOnly"

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