Increase IntelliJ IDEA IDE memory

For Mac OS X systems: 

Since version 12.0.0: The file /Applications/IntelliJ Idea XX.app/bin/idea.vmoptions or /Applications/IntelliJ Idea CE XX.app/bin/idea.vmoptions should be copied to ~/Library/Preferences/IntelliJIdeaXX/idea.vmoptions or ~/Library/Preferences/IdeaICXX/idea.vmoptions

Since version 14.0.0:

The file /Applications/IntelliJ Idea XX.app/Contents/bin/idea.vmoptions or /Applications/IntelliJ Idea CE XX.app/Contents/bin/idea.vmoptions should be copied to ~/Library/Preferences/IntelliJIdeaXX/idea.vmoptions or ~/Library/Preferences/IdeaICXX/idea.vmoptions

For the older versions, the settings are stored in /Applications/IntelliJ IDEA .app/Contents/Info.plist.

The final file should look like:

-Xms128m
-Xmx2048m
-XX:MaxPermSize=350m
-XX:ReservedCodeCacheSize=64m
-XX:+UseCodeCacheFlushing
-XX:+UseCompressedOops




reference:

https://www.jetbrains.com/idea/help/tuning-intellij-idea.html

http://stackoverflow.com/questions/13578062/how-to-increase-ide-memory-limit-in-intellij-idea-on-mac