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Old 12-01-2007, 12:20 AM   #1
lapin3000
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Registered: Dec 2007
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How can I set CPU max % usage for a process ?


I am trying to figure out how to set CPU max % usage for an individual process. Ex.: I want process "A" to use a max of 20% from the CPU when it runs. I don't really care right now how much CPU max time in seconds it should run, I am only interested in the CPU max usage in %, when the process runs.

Any suggestions ? - Thanks !
 
Old 12-01-2007, 02:56 AM   #2
bigrigdriver
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I don't know if it's possible to allocate a percentage of cpu cycles to a particular process. You can set the nice value with the renice command. Lower values (negative) get more cpu time; higher values (positive) get less cpu time.
 
Old 12-01-2007, 03:44 AM   #3
syg00
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Well it is possible, but only if you have the latest -rc kernel, and are prepared to play with non-mainline patchsets.
I have only tested on CPU boundaries, not arbitrary percentages.
Might also still be some compatibility issues on NUMA (multi-CPU Opteron motherboards e.g.).

Still a work in progress ...
 
Old 12-01-2007, 08:51 PM   #4
chrism01
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I'd stick with nice and /or one or more ulimit options if they apply.
 
  


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