jvm 常用參數

-XX:PermSize=64m -XX:MaxPermSize=128m -Xmn512m -Xms2048m -Xmx2048m -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=80 -XX:+CMSParallelRemarkEnabled -XX:CMSFullGCsBeforeCompaction=3 -XX:+CMSClassUnloadingEnabled -XX:+CMSPermGenSweepingEnabled -XX:SurvivorRatio=8 -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/home/yiboliu/heap_jdk_log/