Java 8-old runtime config tips

java8params.txt

For lazy readers full listing is here (for curious detailed explanation is provided below):

    Java < 8

    -server
    -Xms<heap size>[g|m|k] -Xmx<heap size>[g|m|k]
    -XX:PermSize=<perm gen size>[g|m|k] -XX:MaxPermSize=<perm gen size>[g|m|k]
    -Xmn<young size>[g|m|k]
    -XX:SurvivorRatio=<ratio>
    -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled
    -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=<percent>
    -XX:+ScavengeBeforeFullGC -XX:+CMSScavengeBeforeRemark
    -XX:+PrintGCDateStamps -verbose:gc -XX:+PrintGCDetails -Xloggc:"<path to log>"
    -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M
    -Dsun.net.inetaddr.ttl=<TTL in seconds>
    -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=<path to dump>`date`.hprof
    -Djava.rmi.server.hostname=<external IP>
    -Dcom.sun.management.jmxremote.port=<port> 
    -Dcom.sun.management.jmxremote.authenticate=false 
    -Dcom.sun.management.jmxremote.ssl=false

    Java >= 8

    -server
    -Xms<heap size>[g|m|k] -Xmx<heap size>[g|m|k]
    -XX:MaxMetaspaceSize=<metaspace size>[g|m|k]
    -Xmn<young size>[g|m|k]
    -XX:SurvivorRatio=<ratio>
    -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled
    -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=<percent>
    -XX:+ScavengeBeforeFullGC -XX:+CMSScavengeBeforeRemark
    -XX:+PrintGCDateStamps -verbose:gc -XX:+PrintGCDetails -Xloggc:"<path to log>"
    -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M
    -Dsun.net.inetaddr.ttl=<TTL in seconds>
    -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=<path to dump>`date`.hprof
    -Djava.rmi.server.hostname=<external IP>
    -Dcom.sun.management.jmxremote.port=<port> 
    -Dcom.sun.management.jmxremote.authenticate=false 
    -Dcom.sun.management.jmxremote.ssl=false

http://blog.sokolenko.me/2014/11/javavm-options-production.html