JIRA Performance Trick: JVM configured with compressed strings and more

Modify the file:  apache-tomcat/bin/setenv.sh

Add this params to CATALINA_OPTS and then restart JIRA service

-XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:+UseCompressedStrings -XX:+OptimizeStringConcat -XX:+OmitStackTraceInFastThrow -XX:+UseCompressedOops