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SubjectRe: SMP Affinity and nice
Jan Engelhardt wrote:
>> 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.

It's coming in 2.6.18.

Rich,
What kernel version are you using when you see this phenomenon?

Peter
--
Peter Williams pwil3058@bigpond.net.au

"Learning, n. The kind of ignorance distinguishing the studious."
-- Ambrose Bierce
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