Re: SMP Affinity and nice

[Peter Williams]

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@xxxxxxxxxxxxxx

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