-server
-Xms128m
-Xmx512m
-XX:MaxPermSize=250m
-XX:ReservedCodeCacheSize=64m
-XX:+UseConcMarkSweepGC
-XX:+AggressiveOpts
-XX:+CMSClassUnloadingEnabled
-XX:+CMSIncrementalMode
-XX:+CMSIncrementalPacing
-XX:CMSIncrementalDutyCycleMin=0
-XX:-TraceClassUnloading

Mac OSX

Info.plist (inside Application content)

from:

-ea -Xverify:none -Xbootclasspath/a:../lib/boot.jar

to:

-Xverify:none -XX:+UseConcMarkSweepGC -XX:+AggressiveOpts -XX:+CMSClassUnloadingEnabled -XX:+CMSIncrementalMode -XX:+CMSIncrementalPacing -XX:CMSIncrementalDutyCycleMin=0 -XX:-TraceClassUnloading -Xbootclasspath/a:../lib/boot.jar

Run Intellij in 32 bits mode -> cmd + i in icon and set 32 bit