Re: SMP Affinity and nice

From: Jan Engelhardt
Date: Wed Aug 23 2006 - 11:33:54 EST

>Subject: SMP Affinity and nice
>I am trying to come to an understanding as to why 1 process is getting
>less cpu time than identical processes with a higher "nice" value.
>Server has 2 physical processors with hyperthreading (cpu 0,1,2,3)
>I am starting 5 processes that perform a square root loop to max out a
>cpu. They use the exact same code but are renamed for identification:
>cpumax1, cpumax2, cpumax3, cpumax4, cpumax5

What you describe should be addressed in the -ck patchset (smpnice-...diff)
Not sure if it is in mainline already, though.

Jan Engelhardt
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