From: Mike Galbraith <efault@gmx.de>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>,
LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>
Subject: Re: sysbench+mysql(oltp, readonly) 30% regression with 2.6.26-rc1
Date: Fri, 09 May 2008 09:32:42 +0200 [thread overview]
Message-ID: <1210318362.15296.4.camel@marge.simson.net> (raw)
In-Reply-To: <1210315870.13978.204.camel@twins>
[-- Attachment #1: Type: text/plain, Size: 842 bytes --]
On Fri, 2008-05-09 at 08:51 +0200, Peter Zijlstra wrote:
> > > > -rc1. Do you have the fix below applied?
> > >
> > > Oooh - good catch, that seems to be a post -rc1 merge.
> > >
> > > Yes this is required.
>
> > With below patch+previous_fix_weight_calc, the result is improved, but is still
> > about 10% worse than the one of pure 2.6.26-rc1.
> > Number of threads: 16
> > read/write requests: 6104336 (50867.11 per sec.)
> >
>
> So puzzling - could you try -git + fix_weight_calc, as I think that is
> what Mike tested and proved good on his Quad.
If he still has group scheduling enabled, my box agrees that there's a
regression. I got mysql running, and tested with group scheduling both
enabled and disabled, results attached. (for some reason, I can only
test up to 64 threads with mysql though)
-Mike
[-- Attachment #2: yy.pdf --]
[-- Type: application/pdf, Size: 16940 bytes --]
next prev parent reply other threads:[~2008-05-09 7:33 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-07 4:55 sysbench+mysql(oltp, readonly) 30% regression with 2.6.26-rc1 Zhang, Yanmin
2008-05-07 9:16 ` Ingo Molnar
2008-05-07 9:33 ` Zhang, Yanmin
2008-05-07 10:40 ` Ingo Molnar
2008-05-07 16:26 ` Peter Zijlstra
2008-05-08 6:35 ` Zhang, Yanmin
2008-05-08 8:00 ` Mike Galbraith
2008-05-08 8:46 ` Ingo Molnar
2008-05-08 9:25 ` Ingo Molnar
2008-05-08 10:00 ` Mike Galbraith
2008-05-08 9:37 ` Mike Galbraith
2008-05-08 9:01 ` Zhang, Yanmin
2008-05-08 9:13 ` Peter Zijlstra
2008-05-08 9:15 ` Mike Galbraith
2008-05-08 9:22 ` Zhang, Yanmin
2008-05-08 9:23 ` Peter Zijlstra
2008-05-09 1:16 ` Zhang, Yanmin
2008-05-09 6:51 ` Peter Zijlstra
2008-05-09 7:32 ` Mike Galbraith [this message]
2008-05-09 7:50 ` Peter Zijlstra
2008-05-09 7:58 ` Mike Galbraith
2008-05-09 8:02 ` Peter Zijlstra
2008-05-09 8:23 ` Mike Galbraith
2008-05-09 9:47 ` Mike Galbraith
2008-05-09 7:59 ` Mike Galbraith
2008-05-09 8:10 ` Peter Zijlstra
2008-05-09 8:25 ` Mike Galbraith
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