IntelliJ CPU spikes


I'm encountering high CPU spikes in IntelliJ Idea 12.1.6 while working on a big Java project (especially when the Indea indexer is used: highlight occurences, refactor, switch tabs, etc.). I know that Idea indexes the whole project, but I'm wondering if it is normal to have spikes of 60-80% CPU usage. Note that I turned off automatic Java compilation (and also you can see from the screenshot attached that idea64.exe is causing the spikes, and not java.exe). The problem with these spikes is that they cause glitches when I'm playing any music (youtube, radio stream, etc.), which is very annoying. Is this expected, any suggestions?

HW configuration:
Intel Dual Core i5-3320M @ 2.6GHz, 8GB RAM.


The cache folder is on local disk (not remote).

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Please capture a CPU snapshot and attach it to a YouTrack issue as described in


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