On 10/06/2011 17:10, Martin Grotzke wrote: > Hi, > > On 06/10/2011 05:05 PM, Smith, Mitchell wrote: >> Hi, >> >> Tomcat Version 5.5.27 >> OS: Linux Red Hat Linux 5.3 Enterprise 64bit >> >> I have a tomcat server setup, with the following configuration added: >> -XX:+UseLargePages >> -Xms14336m >> -Xmx14336m >> -XX:NewRatio=4 >> -XX:MaxPermSize=256m >> -XX:+UseConcMarkSweepGC >> -XX:CMSInitiatingOccupancyFraction=51 >> -XX:+CMSIncrementalMode >> -XX:+CMSIncrementalPacing >> -XX:CMSIncrementalDutyCycle=75 >> -XX:CMSIncrementalDutyCycleMin=20 >> -XX:CMSIncrementalSafetyFactor=10 >> -XX:CMSIncrementalOffset=0 >> -XX:CMSExpAvgFactor=25 >> >> When I check the JVM output via jConsole the Eden space only has an >> available max space of 10496kbytes, I believe that my configuration of >> -(XX:NewRatio=4) should effectively set this parameter to 20% of the >> total available heap (-Xmx14336m) - should be approx 2936000kbytes. > > What's your jvm version? There was a bug in the sun/oracle jvm so that > NewRatio was not used [1]. > You can still set the new size fix with NewSize. > > Cheers, > Martin > > [1] http://bugs.sun.com/view_bug.do?bug_id=6862534
Are you setting these values in response to some performance testing? p
signature.asc
Description: OpenPGP digital signature
