From: Daniel Phillips <phillips@arcor.de>
To: Andrew Morton <akpm@zip.com.au>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Rmap speedup
Date: Sun, 4 Aug 2002 00:35:38 +0200 [thread overview]
Message-ID: <E17b7Up-0003FJ-00@starship> (raw)
In-Reply-To: <3D4C5BBB.EBD49EA3@zip.com.au>
On Sunday 04 August 2002 00:39, Andrew Morton wrote:
> Daniel Phillips wrote:
> >
> > Wait a second guys, the problem is with the script, look at those CPU
> > numbers:
> >
> > > ./daniel.sh 39.78s user 71.72s system 368% cpu 30.260 total
> > > quad:/home/akpm> time ./daniel.sh
> > > ./daniel.sh 38.45s user 70.00s system 365% cpu 29.642 total
> >
> > They should be 399%!! With my fancy script, the processes themselves are
> > getting serialized somehow.
> >
> > Lets back up and try this again with this pair of scripts, much closer to
> > the original:
>
> Still 360%. I did have a version which achieved 398%, but it
> succumbed to the monthly "why is there so much junk in my home
> dir" disease.
>
> But it doesn't matter, does it? We're looking at deltas here.
It matters a whole lot. If we aren't saturating the CPUs then we're not
testing what we think we're testing.
--
Daniel
next prev parent reply other threads:[~2002-08-03 22:32 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-02 19:42 [PATCH] Rmap speedup Daniel Phillips
2002-08-02 20:20 ` Andrew Morton
2002-08-02 21:40 ` William Lee Irwin III
2002-08-03 0:14 ` Rik van Riel
2002-08-03 0:31 ` Andrew Morton
2002-08-03 0:52 ` William Lee Irwin III
2002-08-03 0:56 ` Rik van Riel
2002-08-03 3:47 ` Daniel Phillips
2002-08-03 5:24 ` Andrew Morton
2002-08-03 18:43 ` Daniel Phillips
2002-08-03 21:40 ` Andrew Morton
2002-08-03 21:54 ` Rik van Riel
2002-08-03 22:49 ` Daniel Phillips
2002-08-03 23:55 ` Gerrit Huizenga
2002-08-04 0:47 ` Andrew Morton
2002-08-04 1:01 ` Daniel Phillips
2002-08-04 14:11 ` Thunder from the hill
2002-08-04 14:47 ` Zwane Mwaikambo
2002-08-04 16:55 ` Tobias Ringstrom
2002-08-03 23:36 ` Daniel Phillips
2002-08-04 0:44 ` Andrew Morton
2002-08-03 21:05 ` Rik van Riel
2002-08-03 21:36 ` Daniel Phillips
2002-08-03 21:43 ` Andrew Morton
2002-08-03 21:41 ` Daniel Phillips
2002-08-03 21:24 ` [PATCH] Rmap speedup... call for testing Daniel Phillips
2002-08-03 22:05 ` [PATCH] Rmap speedup Daniel Phillips
2002-08-03 22:39 ` Andrew Morton
2002-08-03 22:35 ` Daniel Phillips [this message]
2002-08-04 23:33 ` Andrew Morton
2002-08-05 0:35 ` Daniel Phillips
2002-08-05 7:05 ` Andrew Morton
2002-08-05 13:48 ` Daniel Phillips
2002-08-05 13:57 ` Rik van Riel
2002-08-05 18:16 ` Andrew Morton
2002-08-07 18:59 ` Daniel Phillips
2002-08-07 19:40 ` Andrew Morton
2002-08-07 20:17 ` Daniel Phillips
2002-08-07 20:34 ` Andrew Morton
2002-08-07 20:51 ` Daniel Phillips
2002-08-07 20:54 ` Rik van Riel
2002-08-07 22:21 ` Daniel Phillips
2002-08-07 22:48 ` Andrew Morton
2002-08-07 20:39 ` Daniel Phillips
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