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Is there a way to set the maximum CPU usage for a process in Windows 7?
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You can also adjust the processor affinity to limit the CPU usage by doing the following: Start Task Manager and go to the Details tab. Locate the desired application, right-click and choose Set affinity. Uncheck processors threads that you don't want to use with that software and click on OK.
BES: https://mion.yosei.fi/BES/
It's maintained and GPL'ed too.
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You could check out "CPU rate limits in Windows Server 2008 R2 and Windows 7" - http://technet.microsoft.com/en-us/library/ff384148%28WS.10%29.aspx
But be aware of the warning in http://blogs.iis.net/thomad/archive/2010/02/15/put-the-brakes-on-your-application-pools-cpu-rate-limits-in-windows-7.aspx. It says: Now here comes the drawback. The CPU Rate Limit feature has a bug. The kernel is holding on to a handle to the quota object and never lets go of it. This means once you set the CPU rate limit to a particular percentage you can't change this percentage without rebooting the machine. We are working on fixing it - not sure when we'll have a fix though. I have no idea if this bug is fixed.
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