Intellij Custom VM Option 넣기 

Help > Edit Custom VMOptions


-server
-Xss512k
-Xms1024m
-Xmx4096m
-XX:MetaspaceSize=350m
-XX:MaxMetaspaceSize=2G
-XX:ReservedCodeCacheSize=512m
-XX:SurvivorRatio=128
-XX:+UseG1GC
-XX:+AggressiveOpts
-XX:-UseParNewGC
-XX:-UseConcMarkSweepGC
-XX:+CMSParallelRemarkEnabled
-XX:+CMSClassUnloadingEnabled
-XX:+CMSScavengeBeforeRemark
-XX:+CMSPermGenSweepingEnabled
-XX:+UseCMSInitiatingOccupancyOnly
-XX:+UseCMSCompactAtFullCollection
-XX:CMSFullGCsBeforeCompaction=0
-XX:CMSInitiatingOccupancyFraction=70
-XX:MaxTenuringThreshold=0
-XX:+TieredCompilation
-XX:TieredStopAtLevel=1
-Djava.net.preferIPv4Stack=true


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