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I'm using IntelliJ IDEA to develop my Java application. I'm frustrated with the fact that the first compilation of a project (or a complete rebuild) takes very long, about 15 min (and is very CPU-intensive). The project is composed from a couple of hundreds of Java classes, but compiling it with Eclipse just need 1-2 minutes.
Are there any compilation options that I can set in order to speed up this step?
UPDATE
My configuration: SSD, 64GB RAM, Xeon E5-1660, Win 7 Ultimate
Compilation time (Rebuild):
Eclipse: 30s
IntelliJ IDEA with Eclipse compiler 45s
IntelliJ IDEA with javac compiler: more than 10 minutes (!)
Number of java classes ~5000
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You'll find the memory indicator at the bottom right of your screen. It's also possible to increase the default memory settings for IntelliJ: you can tweak custom VM settings: Afterwards you can specify an amount: If IntelliJ is still slow you can disable any plugins you don't require.
Invalidate Caches/Restart. Delete user config. Create a new project (trying to see if my current project files somehow all got messed up, but the problems persist even with new projects) Uninstall + Reinstall.
By default, when you run an application, IntelliJ IDEA compiles the module where the classes you are trying to run are located.
Change the following setting (Build process heap size) to some large value
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Answer from IntelliJ Support:
Try 13.0.2 from http://confluence.jetbrains.com/display/IDEADEV/IDEA+13+EAP .
Disable the option to clean output directories on rebuild in the compiler settings.
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