Xloggc:/data/cassandra/apache-cassandra-3.11.2/logs/gc-%t.log -ea
-XX:+UseThreadPriorities -XX:ThreadPriorityPolicy=42
-XX:+HeapDumpOnOutOfMemoryError
-Xss256k
-XX:StringTableSize=1000003
-XX:+AlwaysPreTouch
-XX:-UseBiasedLocking
-XX:+UseTLAB
-XX:+ResizeTLAB
-XX:+UseNUMA
-XX:+PerfDisableSharedMem -Djava.net.preferIPv4Stack=true
-Xmx31G
-XX:+UseG1GC
-XX:MaxGCPauseMillis=500
-XX:+PrintGCDetails
-XX:+PrintGCDateStamps
-XX:+PrintHeapAtGC
-XX:+PrintTenuringDistribution
-XX:+PrintGCApplicationStoppedTime
-XX:+PrintPromotionFailure
-XX:PrintFLSStatistics=1
-XX:+UseGCLogFileRotation
-XX:NumberOfGCLogFiles=10
-XX:GCLogFileSize=10M
-XX:CompileCommandFile=/data/cassandra/apache-cassandra-3.11.2/conf/hotspot_compiler -javaagent:/data/cassandra/apache-cassandra-3.11.2/lib/jamm-0.3.0.jar -Djava.rmi.server.hostname=10.1.34.103 -Dcassandra.jmx.local.port=7199 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.password.file=/etc/cassandra/jmxremote.password -Djava.library.path=/data/cassandra/apache-cassandra-3.11.2/lib/sigar-bin -XX:OnOutOfMemoryError=kill -9
Report URL - https://gceasy.io/my-gc-report.jsp?p=c2hhcmVkLzIwMjIvMDMvMTAvLS1nYy5sb2cuemlwLS0xMC0yMC0zNg==&channel=WEB
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Hello Ved!
Greetings.
Your application's GC performance is good already for a 31GB heap. Your GC throughput is 99.826%, average GC pause time is 364ms and only once max GC pause time touched 1.7 seconds.
There is always a risk of overtuning it further, it has potential degrade the good performance that you are enjoying today.
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