RubyMine 5.0 now available.
jetbrains.com
jetbrains.com
5% blank sounds more like the typical inefficiencies in either certain java or macosx things.
back when I switched back to linux a couple years back I noticed that the glowing ok button would cause a cpu spike of 4-5% on my core2duo macbook pro.
Have you tried turning power save mode on?
MacOS X apps do not just use 5% for the hell of it. Vico, Sublime Text, Textmate, Emacs, Chocolat all use 0% when sitting there doing nothing.
The IDE works so phenomenally well, it's amazing! I couldn't work without Rubymine.
But rubymine is a way awesome ide. The whole jetbrains stuff is actually.
I've come to Ruby from PHP and PHPStorm (Jetbrains) and both are incredibly powerful. It marries so well with Rails and Git that I just have no need for anything else. And it runs so smoothly on my MBA 8GB.
I shall be upgrading right now!
The issue I have with Rubymine is that it's way too slow. It's just too slow to be productive in.
Macbook Air 2nd gen, 4 gig.
You have to remember that the way Jetbrains code analysis works is that it indexes the hell out of your code to allow you jump to function definitions using CMD-B, error identifications, code completion, etc. CTRL-B alone make learning a new codebase a lot simpler. I appreciate visual debugger a lot. It allows me to avoid polluting my code with debugger statements which is especially evident with conditional debuggers.
Put these in your idea.vmoptions file and thank me later.
-Xms400m -Xmx400m -XX:MaxPermSize=256m -XX:ReservedCodeCacheSize=64m -XX:+UseConcMarkSweepGC -XX:-UseParNewGC -XX:+AggressiveOpts -XX:+UseCodeCacheFlushing -Dawt.useSystemAAFontSettings