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

[Nakajima, Jun]

We have found some performance regressions (e.g. SPECjbb) with the
scheduler on a large IA-64 NUMA machine, and we are debugging it. On SMP
machines, we haven't seen performance regressions.

Jun

>-----Original Message-----
>From: Andi Kleen [mailto:ak@xxxxxxx]
>Sent: Wednesday, March 24, 2004 8:56 PM
>To: Ingo Molnar
>Cc: piggin@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
akpm@xxxxxxxx;
>kernel@xxxxxxxxxxx; rusty@xxxxxxxxxxxxxxx; Nakajima, Jun;
>ricklind@xxxxxxxxxx; anton@xxxxxxxxx; lse-tech@xxxxxxxxxxxxxxxxxxxxx;
>mbligh@xxxxxxxxxxx
>Subject: Re: [Lse-tech] [patch] sched-domain cleanups,
sched-2.6.5-rc2-mm2-
>A3
>
>On Thu, 25 Mar 2004 09:28:09 +0100
>Ingo Molnar <mingo@xxxxxxx> wrote:
>
>> i've reviewed the sched-domains balancing patches for upstream
inclusion
>> and they look mostly fine.
>
>The main problem it has is that it performs quite badly on Opteron NUMA
>e.g. in the OpenMP STREAM test (much worse than the normal scheduler)
>
>-Andi
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