Re: [Lse-tech] [patch] sched-domain cleanups, sched-2.6.5-rc2-mm2-A3

Andi Kleen
2004-03-30T09:36:49Z

On Tue, 30 Mar 2004 10:18:40 +0200
Ingo Molnar <mingo@elte.hu> wrote:

>
> * Andi Kleen <ak@suse.de> wrote:
>
> > > ok, could you try min_interval,max_interval and busy_factor all with a
> > > value as 4, in sched.h's SD_NODE_INIT template? (again, only for testing
> > > purposes.)
> >
> > I kept the old patch and made these changes. The results are much more
> > consistent now 3+x CPU. I still get varyations of ~2GB/s, but I had
> > this with older kernels too.
>
> great.
>
> now, could you try the following patch, against vanilla -mm5:
>
> redhat.com/~mingo/scheduler-patches/sched2.patch
>
> this includes 'context balancing' and doesnt touch the NUMA async
> balancing tunables. Do you get better performance than with stock -mm5?

I get better performance (roughly 2.1x CPU), but only about half the optimum.

-Andi