.jvmopts

# Cats jvmopts see https://weblogs.java.net/blog/kcpeppe/archive/2013/12/11/case-study-jvm-hotspot-flags
-Dfile.encoding=UTF8
-Xms1G
-Xmx6G
-XX:MaxMetaspaceSize=1024M
-XX:ReservedCodeCacheSize=250M
-XX:+TieredCompilation
-XX:-UseGCOverheadLimit
# effectively adds GC to Perm space
-XX:+UseConcMarkSweepGC
-XX:+CMSClassUnloadingEnabled
# must be enabled for CMSClassUnloadingEnabled to work