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

From: Nakajima, Jun
Date: Thu Mar 25 2004 - 10:18:12 EST

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.


>-----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;
>kernel@xxxxxxxxxxx; rusty@xxxxxxxxxxxxxxx; Nakajima, Jun;
>ricklind@xxxxxxxxxx; anton@xxxxxxxxx; lse-tech@xxxxxxxxxxxxxxxxxxxxx;
>Subject: Re: [Lse-tech] [patch] sched-domain cleanups,
>On Thu, 25 Mar 2004 09:28:09 +0100
>Ingo Molnar <mingo@xxxxxxx> wrote:
>> i've reviewed the sched-domains balancing patches for upstream
>> 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)
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at