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Date: Tue, 7 Jun 2005 16:56:56 -0700
From: Andrew Morton <akpm@osdl.org>
To: "Martin J. Bligh" <mbligh@mbligh.org>
Cc: linux-kernel@vger.kernel.org, Christoph Lameter <clameter@engr.sgi.com>
Subject: Re: 2.6.12-rc6-mm1
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"Martin J. Bligh" <mbligh@mbligh.org> wrote:
>
> Wheeee! it actually compiles and boots for me on x86 ;-)

We aim to please.

> http://ftp.kernel.org/pub/linux/kernel/people/mbligh/abat/perf/kernbench.moe.png
> 
> Seems to show that perf is rather sucky on kernbench though.

CPU scheduler.

> baseline (-rc6) data is here:
> 
> http://ftp.kernel.org/pub/linux/kernel/people/mbligh/abat/4760/kernbench.test/
> 
> -mm1 is here:
> 
> http://ftp.kernel.org/pub/linux/kernel/people/mbligh/abat/4876/kernbench.test/
> 
> Diffprofile is wacko (HZ seems to be defaulting to 250 in -mm).

Oh crap, so it does.  That's wrong.

> If I factor it by 4x, I get:

Would it be possible to set it back to 100Hz, retest?