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CPU 0 Under Heavy Load. Have to change affinity to run games smoothly.

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December 27, 2013 4:45:55 PM

Hi all,

I have an i7 3770k cpu that seems to favor core 0. The problem residing from this is a performance drop when running any game (Call of Duty Ghost for example). I was getting a huge drop in fps making the game unplayable. After checking out resource monitor, I noticed core 0 under heavy load, so I changed the affinity to use cores 1-7. This fixed the problem and all my games run great. It's rather annoying, however, to have to do this every time. Is there a way to launch an application with the affinity pre-set? Or is there a way to distribute the system processes? Here is a screen shot of task manager on a diagnostic boot using only basic services and drivers. Notice that core 0 is under heavy load.

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December 27, 2013 10:41:51 PM

Sounds like you may need to unpark your cores.
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December 29, 2013 11:00:39 PM

Master-flaw said:
Sounds like you may need to unpark your cores.


I gave it shot, but it made no difference. I still have to remove cpu 0 from any game process to avoid suffering a huge fps drop.
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December 30, 2013 2:24:09 AM

Check the processes tab and see what is taxing your cpu. google the name of the process and if you do not recognize it.
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December 30, 2013 11:53:21 AM

sunshine240sx said:
Check the processes tab and see what is taxing your cpu. google the name of the process and if you do not recognize it.


After booting up this morning, I checked resource monitor to see that there was slight cpu usage spread out across cores 0, 2, 4, and 6. I thought it was looking to be in good shape, so I ran a game only to get the same results. System interrupts spiked to about 12% cpu usage and seemed to be only on core 0 as the other cores had moderate usage compared to core 0 which seemed to be at it's max. I've checked out several forums on system interrupts causing high cpu usage, but no one seemed to have viable solution.
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