From: Michael Wang <wangyun@linux.vnet.ibm.com>
To: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>,
LKML <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@kernel.org>, Alex Shi <alex.shi@intel.com>,
Namhyung Kim <namhyung@kernel.org>, Paul Turner <pjt@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
"Nikunj A. Dadhania" <nikunj@linux.vnet.ibm.com>,
Ram Pai <linuxram@us.ibm.com>
Subject: Re: [PATCH] sched: smart wake-affine
Date: Fri, 05 Jul 2013 14:16:25 +0800 [thread overview]
Message-ID: <51D664B9.7010407@linux.vnet.ibm.com> (raw)
In-Reply-To: <1373002865.8318.11.camel@marge.simpson.net>
On 07/05/2013 01:41 PM, Mike Galbraith wrote:
[snip]
>>
>> Have you tried to use more loops and groups? will that show even bigger
>> regressions?
>
> Nope, less on either side.
>
> hackbench -g 100 -l 1000
> avg
> 3.10.0-regress 21.895 21.564 21.777 21.958 22.093 21.857 1.000
> 3.10.0-regressx 22.844 23.268 23.056 23.231 22.375 22.954 1.050
>
> hackbench -g 1 -l 100000
> avg
> 3.10.0-regress 29.913 29.711 30.395 30.213 30.236 30.093 1.000
> 3.10.0-regressx 30.392 31.003 30.728 31.008 30.389 30.704 1.020
Hmm...I'm not expecting to reserve all of the 15%, but this still seems
a little bit more...
PeterZ has suggested some optimization which I sent out yesterday, I
suppose they haven't been included into this test yet, correct?
Since currently I could not reproduce the issue on my box with that
patch, I suppose it may solved that issue ;-)
Regards,
Michael Wang
>
>> BTW, is this the results of 10 group and 40 sockets == 400 tasks?
>
> Yeah, stock.
>
> Off to do some body/mind tuning. Bavarian mushrooms don't hide as well
> as memory access thingies.. and I can still out run 'em.
>
> -Mike
>
>
>
> --
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next prev parent reply other threads:[~2013-07-05 6:16 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-28 5:05 [RFC PATCH] sched: smart wake-affine Michael Wang
2013-06-03 2:28 ` Michael Wang
2013-06-03 3:09 ` Mike Galbraith
2013-06-03 3:26 ` Michael Wang
2013-06-03 3:53 ` Mike Galbraith
2013-06-03 4:52 ` Michael Wang
2013-06-03 5:22 ` Mike Galbraith
2013-06-03 5:50 ` Michael Wang
2013-06-03 6:05 ` Mike Galbraith
2013-06-03 6:31 ` Michael Wang
2013-06-13 3:09 ` Michael Wang
2013-07-02 4:43 ` [PATCH] " Michael Wang
2013-07-02 5:38 ` Mike Galbraith
2013-07-02 5:50 ` Michael Wang
2013-07-02 5:54 ` Mike Galbraith
2013-07-02 6:17 ` Michael Wang
2013-07-02 6:29 ` Mike Galbraith
2013-07-02 6:45 ` Michael Wang
2013-07-02 8:52 ` Peter Zijlstra
2013-07-02 9:35 ` Michael Wang
2013-07-02 9:44 ` Michael Wang
2013-07-04 9:13 ` Peter Zijlstra
2013-07-04 9:38 ` Michael Wang
2013-07-04 10:33 ` Mike Galbraith
2013-07-05 2:47 ` Michael Wang
2013-07-05 4:08 ` Mike Galbraith
2013-07-05 4:33 ` Michael Wang
2013-07-05 5:41 ` Mike Galbraith
2013-07-05 6:16 ` Michael Wang [this message]
2013-07-07 6:43 ` Mike Galbraith
2013-07-08 2:49 ` Michael Wang
2013-07-08 3:12 ` Mike Galbraith
2013-07-08 8:21 ` Peter Zijlstra
2013-07-08 8:49 ` Mike Galbraith
2013-07-08 9:08 ` Michael Wang
2013-07-08 8:58 ` Michael Wang
2013-07-08 18:59 ` Davidlohr Bueso
2013-07-09 2:30 ` Michael Wang
2013-07-09 2:36 ` Davidlohr Bueso
2013-07-09 2:52 ` Michael Wang
2013-07-15 5:13 ` Michael Wang
2013-07-15 5:57 ` Davidlohr Bueso
2013-07-15 6:01 ` Michael Wang
2013-07-18 2:15 ` Michael Wang
2013-07-03 6:10 ` [PATCH v2] " Michael Wang
2013-07-03 8:50 ` Peter Zijlstra
2013-07-03 9:11 ` Michael Wang
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