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 -- Martin Grotzke http://twitter.com/martin_grotzke
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