6 Replies Latest reply: Jul 11, 2013 4:21 PM by surjit
surjit Level 2 (265 points)

I have a 13" MBP with Retina display, running 10.8.4. Several times a day, the CPU usage spontaneously spikes to 100-200% and the fans go nuts. I've been trying to pin it to an activity, but I don't usually notice it until the sound of the jets taking off fans spinning up alerts me and Mail is often in the background. So I can't tie it to anything yet.


I'm running 5 Gmail/Google Apps email accounts. Even though CPU usages spikes badly, Mail doesn't seen to become less usable - the main bummer is the fans spinning up which can be quite distracting in meetings or on Skype calls. After a few minutes, Mail calms down and things go back to normal, or I can kill/restart Mail.


Here's what the resources look like when this happens:


Screen Shot 2013-06-17 at 6.06.55 PM.png

I am running the current version of InDev's Mail Act-On but I uninstalled it and it made no difference - still the same spikes several times a day. No other add-ons in Mail. I've tried resetting the SyncServices folder based on some other posts here.


Any tips on how to resolve this?

MacBook Pro with Retina display, OS X Mountain Lion (10.8.4)