From: "Martin J. Bligh" <mbligh@aracnet.com>
To: "Nakajima, Jun" <jun.nakajima@intel.com>, Andi Kleen <ak@suse.de>,
Ingo Molnar <mingo@elte.hu>
Cc: piggin@cyberone.com.au, linux-kernel@vger.kernel.org,
akpm@osdl.org, kernel@kolivas.org, rusty@rustcorp.com.au,
ricklind@us.ibm.com, anton@samba.org,
lse-tech@lists.sourceforge.net
Subject: RE: [Lse-tech] [patch] sched-domain cleanups, sched-2.6.5-rc2-mm2-A3
Date: Thu, 25 Mar 2004 08:53:23 -0800 [thread overview]
Message-ID: <78440000.1080233603@flay> (raw)
In-Reply-To: <7F740D512C7C1046AB53446D3720017301119907@scsmsx402.sc.intel.com>
> 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.
Is this the SPECjbb / Java thing that believes that sched_yield is a
stable locking primitive? If so, it needs to be ignored ;-) That's
the problem we had here, at least ...
M.
> Jun
>
>> -----Original Message-----
>> From: Andi Kleen [mailto:ak@suse.de]
>> Sent: Wednesday, March 24, 2004 8:56 PM
>> To: Ingo Molnar
>> Cc: piggin@cyberone.com.au; linux-kernel@vger.kernel.org;
> akpm@osdl.org;
>> kernel@kolivas.org; rusty@rustcorp.com.au; Nakajima, Jun;
>> ricklind@us.ibm.com; anton@samba.org; lse-tech@lists.sourceforge.net;
>> mbligh@aracnet.com
>> 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@elte.hu> 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
>
>
next prev parent reply other threads:[~2004-03-25 16:54 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-25 15:15 [Lse-tech] [patch] sched-domain cleanups, sched-2.6.5-rc2-mm2-A3 Nakajima, Jun
2004-03-25 16:19 ` John Hawkes
2004-03-25 16:53 ` Martin J. Bligh [this message]
-- strict thread matches above, loose matches on Subject: below --
2004-03-25 15:31 Nakajima, Jun
2004-03-25 15:40 ` Andi Kleen
2004-03-25 19:09 ` Ingo Molnar
2004-03-25 15:21 ` Andi Kleen
2004-03-25 19:39 ` Ingo Molnar
2004-03-25 20:30 ` Ingo Molnar
2004-03-29 8:45 ` Andi Kleen
2004-03-29 10:20 ` Rick Lindsley
2004-03-29 5:07 ` Andi Kleen
2004-03-29 11:28 ` Nick Piggin
2004-03-29 17:30 ` Rick Lindsley
2004-03-30 0:01 ` Nick Piggin
2004-03-30 1:26 ` Rick Lindsley
2004-03-29 11:20 ` Nick Piggin
2004-03-29 6:01 ` Andi Kleen
2004-03-29 11:46 ` Ingo Molnar
2004-03-29 7:03 ` Andi Kleen
2004-03-29 7:10 ` Andi Kleen
2004-03-29 20:14 ` Andi Kleen
2004-03-29 23:51 ` Nick Piggin
2004-03-30 6:34 ` Andi Kleen
2004-03-30 6:40 ` Ingo Molnar
2004-03-30 7:07 ` Andi Kleen
2004-03-30 7:14 ` Nick Piggin
2004-03-30 7:45 ` Ingo Molnar
2004-03-30 7:58 ` Nick Piggin
2004-03-30 7:15 ` Ingo Molnar
2004-03-30 7:18 ` Nick Piggin
2004-03-30 7:48 ` Andi Kleen
2004-03-30 8:18 ` Ingo Molnar
2004-03-30 9:36 ` Andi Kleen
2004-03-30 7:42 ` Ingo Molnar
2004-03-30 7:03 ` Nick Piggin
2004-03-30 7:13 ` Andi Kleen
2004-03-30 7:24 ` Nick Piggin
2004-03-30 7:38 ` Arjan van de Ven
2004-03-30 7:13 ` Martin J. Bligh
2004-03-30 7:31 ` Nick Piggin
2004-03-30 7:38 ` Martin J. Bligh
2004-03-30 8:05 ` Ingo Molnar
2004-03-30 8:19 ` Nick Piggin
2004-03-30 8:45 ` Ingo Molnar
2004-03-30 8:53 ` Nick Piggin
2004-03-30 15:27 ` Martin J. Bligh
2004-03-25 19:24 ` Martin J. Bligh
2004-03-25 21:48 ` Ingo Molnar
2004-03-25 22:28 ` Martin J. Bligh
2004-03-29 22:30 ` Erich Focht
2004-03-30 9:05 ` Nick Piggin
2004-03-30 10:04 ` Erich Focht
2004-03-30 10:58 ` Andi Kleen
2004-03-30 11:02 ` Andrew Morton
2004-03-31 18:59 ` Erich Focht
2004-03-31 2:08 ` Nick Piggin
2004-03-31 22:23 ` Erich Focht
2004-03-30 15:01 ` Martin J. Bligh
2004-03-31 21:23 ` Erich Focht
2004-03-31 21:33 ` Martin J. Bligh
2004-03-25 21:59 ` Ingo Molnar
2004-03-25 22:26 ` Rick Lindsley
2004-03-25 22:30 ` Andrew Theurer
2004-03-25 22:38 ` Martin J. Bligh
2004-03-26 1:29 ` Andi Kleen
2004-03-26 3:23 ` Nick Piggin
[not found] <1DF7H-22Y-11@gated-at.bofh.it>
[not found] ` <1DL3x-7iG-7@gated-at.bofh.it>
[not found] ` <1DLGd-7TS-17@gated-at.bofh.it>
[not found] ` <1FmNz-72J-73@gated-at.bofh.it>
[not found] ` <1FnzJ-7IW-15@gated-at.bofh.it>
2004-03-30 9:39 ` Andi Kleen
2004-03-31 1:56 ` Nick Piggin
2004-03-30 21:40 Nakajima, Jun
2004-03-30 22:15 ` Andrew Theurer
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