Please post a comment if you have any additional tips to making IDEA faster.
1) The first thing you want to do is disable all the plugins you are not using. Go to *Preferences& -> Plugins and un-check as many as possible. I unchecked about 80%.
2) Give yourself more memory. I figure if Firefox allows itself to take a gig of
my ram then I should treat my IDE a little better. So, I gave it two. Find your
idea.vmpoptions file (on Mac you can “right” click the IntelliJ IDEA app icon,
Show Package Contents and look in the
bin folder.) and tweak start-up
settings like this:
-Xms512m -Xmx2048m -XX:MaxPermSize=512m -XX:ReservedCodeCacheSize=256m -XX:+UseCompressedOops -DlocalHistory.daysToKeep=1
2.1) You might notice the last setting on there is a local history setting. I do a pretty good job at committing anything useful to my version control system, so I keep that at a minimum. Part of me wants to completely remove the local history feature but it doesn’t cost me much to keep it around so I keep it at just a day. You can change that or remove the setting to keep the default.