jvm cms 参数

-Xms2048m -Xmx2048m -Xmn500m -XX:PermSize=512M -XX:SurvivorRatio=65536  -XX:MaxPermSize=512M -XX:+UseParNewGC  -XX

:+UseConcMarkSweepGC -XX:+UseCMSCompactAtFullCollection -XX:CMSFullGCsBeforeCompaction=0 -XX:+CMSClassUnloadingEnabled -XX:+C

MSParallelRemarkEnabled -XX:LargePageSizeInBytes=128M -XX:+UseFastAccessorMethods -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSI

nitiatingOccupancyFraction=70  -XX:SoftRefLRUPolicyMSPerMB=0 -XX:+PrintClassHistogram -XX:+PrintGCDetails -XX:+PrintGCTimeSta

mps -XX:+PrintHeapAtGC  -Xloggc:./gc.log 

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