[Deploying Sakai] JVM tuning changes for 1.5 > 1.6
Stephen Marquard
stephen.marquard at uct.ac.za
Wed Jul 21 01:18:36 PDT 2010
Hi all,
Though I fear to ask this question ... has anyone who has moved from running java 1.5 to 1.6 made specific changes to their JAVA_OPTS memory settings, and if so can share what and why?
We currently have:
-Xms5000m -Xmx5000m -Xmn1g -XX:MaxPermSize=512m -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:GCTimeRatio=19 -XX:SurvivorRatio=8 -XX:TargetSurvivorRatio=90
-XX:MaxTenuringThreshold=31 -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCTimeStamps
Our servers are Linux (SLES) with 8G RAM.
Cheers
Stephen
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