I install zimbra server.
I have seen that default JVM options use debug parameter :

zmlocalconfig mailboxd_java_options
mailboxd_java_options = -server -Djava.awt.headless=true -XX:+UseConcMarkSweepGC -XX:NewRatio=2 -XX:PermSize=128m -XX:MaxPermSize=128m -XX:SoftRefLRUPolicyMSPerMB=1 -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintGCApplicationStoppedTime
Those 4 options are debuging options :

Java HotSpot VM Options

Therefore I wonder if I should remove those in order to gain performance or if those options are use by other applications.

Thanks you.