From: Andrew Morton <akpm@digeo.com>
To: "Martin J. Bligh" <mbligh@aracnet.com>
Cc: lkml <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
Anton Blanchard <anton@samba.org>
Subject: Re: 2.5.39-mm1
Date: Mon, 30 Sep 2002 01:01:37 -0700 [thread overview]
Message-ID: <3D9804E1.76C9D4AE@digeo.com> (raw)
In-Reply-To: <735786955.1033347097@[10.10.2.3]>
"Martin J. Bligh" wrote:
>
> > I must say that based on a small amount of performance testing the
> > benefits of the cache warmness thing are disappointing. Maybe 1% if
> > you squint. Martin, could you please do a before-and-after on the
> > NUMAQ's, double check that it is actually doing the right thing?
>
> Seems to work just fine:
>
> 2.5.38-mm1 + my original hot/cold code.
> Elapsed: 19.798s User: 191.61s System: 43.322s CPU: 1186.4%
>
> 2.5.39-mm1
> Elapsed: 19.532s User: 192.25s System: 42.642s CPU: 1203.2%
>
> And it's a lot more than 1% for me ;-) About 12% of systime
> on kernel compile, IIRC.
Well that's still a 1% bottom line. But we don't have a
comparison which shows the effects of this patch alone.
Can you patch -R the five patches and retest sometime?
I just get the feeling that it should be doing better.
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next prev parent reply other threads:[~2002-09-30 8:01 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-29 20:26 2.5.39-mm1 Andrew Morton
2002-09-30 1:24 ` 2.5.39-mm1 Ed Tomlinson
2002-09-30 1:35 ` 2.5.39-mm1 Andrew Morton
2002-09-30 7:51 ` 2.5.39-mm1 Martin J. Bligh
2002-09-30 8:01 ` Andrew Morton [this message]
2002-09-30 16:29 ` 2.5.39-mm1 Martin J. Bligh
2002-09-30 18:24 ` 2.5.39-mm1 Andrew Morton
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