Memory Cassandra3.X（3.11.6）在从2.2.8升级后继续消耗内存

当我用3.11.6版启动Cassandra集群时，可用内存为15%，4,5天后降至10%，并逐渐减少，我们是否需要更改一些设置，以便可用内存始终保持在14%到15%左右的恒定值。 下面是卡桑德拉的一些细节 -Xms982M-Xmx982M-Xmn200M

-ea-XX:+UseThreadPriorityPolicy-XX:ThreadPriorityPolicy=42-XX:+HeapDumpOnAutofMemoryError-XS256K-XX:StringTableSize=1000003-XX:+AlwaysPreTouch-XX:-UseBiasedLocking-XX:+UseTLAB-XX:+ResizeTLAB-XX:+UseNUMA-XX:+PerfDisableSharedEM-Djava.net.preferIPv4Stack=true-XX:+UseParNewGC-XX:+UseConMarkSweepGC-XX:+UseCSparalleRemarked-XX:surviviorratio=8-XX:maxtenUringReshold=1-XX:cmsSinitiatingOccinecyFraction=75-XX:+UseCmSinitingOccinecyYony-XX:CMSWaitDuration=10000-XX:+cmsParallelineticalMarkEnabled-XX:+cmsDenchunksRecordAlways-XX:+CMSClassUnloadingEnabled-XX:+PrintGCDetails-XX:+PrintGCDatestampatgc-XX:+PrintenUringDistribution-XX-XX:+PrintGCApplicationStoppedTime-XX:+PrintPromotionFailure-XX:+UseGCLogFileRotation-XX:NumberOfGCLogFiles=10-XX:GCLogFileSize=10M-Xms982M-Xmx982M-Xmn200M

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