jvm.options.128_GB

-XX:+UseThreadPriorities
-XX:ThreadPriorityPolicy=42

# Heap size (Xms, Xmx) and young generation size (Xmn) should be set depending
# on the amount of available memory. These settings work for a memory size of 128GB
-Xms64G
-Xmx64G
-Xmn16G

-XX:+HeapDumpOnOutOfMemoryError
-Xss256k
-XX:StringTableSize=1000003

# CMS settings
-XX:+UseParNewGC
-XX:+UseConcMarkSweepGC
-XX:+CMSParallelRemarkEnabled
-XX:SurvivorRatio=4
-XX:MaxTenuringThreshold=1
-XX:CMSInitiatingOccupancyFraction=60
-XX:+UseCMSInitiatingOccupancyOnly

-XX:+CMSScavengeBeforeRemark
-XX:CMSMaxAbortablePrecleanTime=60000

-XX:CMSWaitDuration=30000
-XX:+CMSParallelInitialMarkEnabled
-XX:+CMSEdenChunksRecordAlways
-XX:+CMSClassUnloadingEnabled

# Additional settings
-XX:+UseCondCardMark
-XX:MaxTenuringThreshold=2
-XX:-UseBiasedLocking
-XX:+UseTLAB
-XX:+ResizeTLAB
-XX:+PerfDisableSharedMem
-XX:+AlwaysPreTouch
-XX:+UnlockDiagnosticVMOptions
-XX:ParGCCardsPerStrideChunk=4096

# If needed, logging can be enabled for Cassandra by uncommenting the following flags:

############## Logging ###############
# -XX:+PrintGCDetails
# -XX:+PrintGCDateStamps
# -XX:+PrintTenuringDistribution
# -XX:+PrintGCApplicationStoppedTime
# -XX:+PrintPromotionFailure
# -XX:+PrintClassHistogramBeforeFullGC
# -XX:+PrintClassHistogramAfterFullGC
# -Xloggc:/var/log/cassandra/gc.log
# -XX:+UseGCLogFileRotation
# -XX:NumberOfGCLogFiles=2
# -XX:GCLogFileSize=10M
############## Logging ###############