I upgraded from IntelliJ IDEA from 12 CE to 13 CE few days ago and it has been hogging up CPU. Every few minutes it\'ll peak to 450-500% and then come down to 100-200%. Also, I\
If anyone's wondering the "right" way to edit the idea.vmoptions or idea64.vmoptions file, here it is: https://www.jetbrains.com/idea/help/tuning-intellij-idea.html
On *NIX, you want to copy
/bin/idea64.vmoptions
to:
$HOME/.IntelliJIdeaXX/idea64.vmoptions
and edit that file to increase the heap memory for IntelliJ IDEA
(OP's example settings: Xms = 512m and Xmx = 2048)