-Xms32G
-Xmx32G
-XX:+UseG1GC
-XX:+ParallelRefProcEnabled
-XX:MaxTenuringThreshold=2
-XX:G1HeapRegionSize=16m
-XX:G1RSetUpdatingPauseTimePercent=5
-XX:MaxGCPauseMillis=300
-XX:InitiatingHeapOccupancyPercent=70
-Xlog:gc*,gc+age=trace,safepoint:file=/var/log/cassandra/gc.log:time,uptime,level,tags:filecount=10,filesize=100M
-XX:+AlwaysPreTouch
-XX:+IgnoreUnrecognizedVMOptions
-Xss512k
-XX:+UseTLAB
-XX:+ResizeTLAB
-XX:+PerfDisableSharedMem
-XX:+UseStringDeduplication
-XX:+HeapDumpOnOutOfMemoryError
-XX:HeapDumpPath=/var/lib/cassandra/dumps
-Djdk.attach.allowAttachSelf=true
--add-exports=java.base/jdk.internal.misc=ALL-UNNAMED
--add-exports=java.base/jdk.internal.ref=ALL-UNNAMED
--add-exports=java.base/sun.nio.ch=ALL-UNNAMED
--add-exports=java.management.rmi/com.sun.jmx.remote.internal.rmi=ALL-UNNAMED
--add-exports=java.rmi/sun.rmi.registry=ALL-UNNAMED
--add-exports=java.rmi/sun.rmi.server=ALL-UNNAMED
--add-exports=java.sql/java.sql=ALL-UNNAMED
--add-opens=java.base/java.lang.module=ALL-UNNAMED
--add-opens=java.base/jdk.internal.loader=ALL-UNNAMED
--add-opens=java.base/jdk.internal.ref=ALL-UNNAMED
--add-opens=java.base/jdk.internal.reflect=ALL-UNNAMED
--add-opens=java.base/jdk.internal.math=ALL-UNNAMED
--add-opens=java.base/jdk.internal.module=ALL-UNNAMED
--add-opens=java.base/jdk.internal.util.jar=ALL-UNNAMED
--add-opens=jdk.management/com.sun.management.internal=ALL-UNNAMED
-Dcom.sun.management.jmxremote.authenticate=false
-Dcom.sun.management.jmxremote.ssl=false
-Dcassandra.jmx.local.port=7199
-Dcassandra.jmx.remote.port=7199
-Djava.net.preferIPv4Stack=true
-Dio.netty.tryReflectionSetAccessible=true
-Dio.netty.allocator.useCacheForAllThreads=true
-Dio.netty.eventLoop.maxPendingTasks=65536
-Dcassandra.config=file:///etc/cassandra/cassandra.yaml
-Dcassandra.logdir=/var/log/cassandra
-Dcassandra.storagedir=/var/lib/cassandra
-Djava.security.egd=file:/dev/urandom
-Dfile.encoding=UTF-8