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Variation in Max Heap size
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reply from <a href="http://community.jboss.org/people/ruchirc">Ruchir Choudhry</a> in <i>Performance Tuning</i> - <a href="http://community.jboss.org/message/553863#553863">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hello,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Can you provide specific details as listed below.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>01> What type of platform you are using</p><p>02> What is the total RAM of the Machine</p><p>03> how many CPUs you have on the box and what type of CPUs you have</p><p>04> please avoid using "-server" as a input parameter to the JVM, JDK1.5 onwards dose it automatically for you, it checks the os to get this value</p><p>05> Based on the details which you have provided i think this will work</p><p>-Xmx2048m -Xms2048m -XX:MaxNewSize=256m -XX:NewSize=256m -XX:MaxPermSize=128m -XX:SurvivorRatio=8 -XX:TargetSurvivorRatio=90 -XX:MaxTenuringThreshold=0 -XX:CMSInitiatingOccupancyFraction=60 -XX:LargePageSizeInBytes=5m -XX:ParallelGCThreads=20   -XX:+StringCache -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:ThreadStackSize=1024 -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span>06> Try to go through this articel "</span><a class="jive-link-external-small" href="http://community.jboss.org/docs/DOC-15623?uniqueTitle=false" target="_blank">http://community.jboss.org/docs/DOC-15623?uniqueTitle=false</a><span>" we have tried to explain it.</span></p></div>
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