Scheduler weirdness
Steve Kargl
sgk at troutmask.apl.washington.edu
Mon Oct 12 04:33:59 UTC 2009
On Mon, Oct 12, 2009 at 01:49:27PM +1100, Alex R wrote:
> Steve Kargl wrote:
> >So, you have 4 cpus and 4 folding-at-home processes and you're
> >trying to use the system with other apps? Switch to 4BSD.
> >
> >
>
> I thought SCHED_ULE was meant to be a much better choice under an SMP
> environment. Why are you suggesting he rebuild his kernel and use the
> legacy scheduler?
>
If you have N cpus and N+1 numerical intensitive applications,
ULE may have poor performance compared to 4BSD. In OP's case,
he has 4 cpus and 4 numerical intensity (?) applications. He,
however, also is trying to use the system in some interactive
way.
--
Steve
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