JVM配置-1-简单配置

JVM常用参数

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-server
-Djava.security.egd=file:/dev/./urandom

CMS:

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-XX:MaxMetaspaceSize=384m -XX:ParallelGCThreads=2 -XX:SurvivorRatio=8 
-XX:+UseConcMarkSweepGC -XX:CMSFullGCsBeforeCompaction=0 -XX:LargePageSizeInBytes=64m 
-XX:+CMSParallelRemarkEnabled -XX:+UseCMSCompactAtFullCollection 
-XX:+UseFastAccessorMethods -XX:+CMSClassUnloadingEnabled

G1:

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-XX:ParallelGCThreads=2
-XX:+UseG1GC
-XX:G1HeapRegionSize=8
-XX:ConcGCThreads=1
-XX:InitiatingHeapOccupancyPercent=45