From: Octavio Alvarez Piza <alvarezp@alvarezp.ods.org>
To: gcoady@gmail.com, linux-kernel@vger.kernel.org
Cc: Willy Tarreau <willy@w.ods.org>,
Markus Rechberger <mrechberger@gmail.com>,
linux-kernel@vger.kernel.org
Subject: Re: Why is 2.4.32 four times faster than 2.6.14.6??
Date: Sun, 8 Jan 2006 10:21:01 -0800 [thread overview]
Message-ID: <20060108102101.770a395f@octavio.alvarezp.pri> (raw)
In-Reply-To: <eto1s19q78qg34o5uq37o46t30f3adfn0q@4ax.com>
On Sun, 08 Jan 2006 22:05:43 +1100
Grant Coady <gcoady@gmail.com> wrote:
> On Sun, 8 Jan 2006 10:57:41 +0100, Willy Tarreau <willy@w.ods.org> wrote:
>
> > Could you please retest :
> > - without the pipe (remove '| cut ...') to avoid inter-process
> > communications
>
> I thought it made a difference, then delay back again, I'll try
> again tomorrow when I'm more awake.
>
> >You should be able to find one simple pattern which makes the problem
> >appear/disappear on 2.6. At least, 'cat x.log >/dev/null' should not
> >take time or that time should be spent in I/O.
>
> Yes, done that and the time went down by ~five seconds.
Just make sure you first read all the file with cat (I'd retry all from
the initial tests) so you don't add hd-read time to the first command.
Octavio.
next prev parent reply other threads:[~2006-01-08 18:21 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-08 6:16 Grant Coady
2006-01-08 6:58 ` Markus Rechberger
2006-01-08 7:18 ` Bernd Eckenfels
2006-01-08 7:42 ` Grant Coady
2006-01-08 8:00 ` Bernd Eckenfels
2006-01-08 8:11 ` Con Kolivas
2006-01-08 9:12 ` Bernd Eckenfels
2006-01-08 12:04 ` Jan Engelhardt
2006-01-08 19:20 ` Grant Coady
2006-02-22 19:27 ` Enrico Weigelt
2006-02-22 23:17 ` Adrian Bunk
2006-01-08 7:28 ` Grant Coady
2006-01-08 9:57 ` Willy Tarreau
2006-01-08 10:23 ` Bernd Eckenfels
2006-01-08 10:54 ` Willy Tarreau
2006-01-08 11:09 ` Bernd Eckenfels
2006-01-08 11:16 ` Willy Tarreau
2006-01-08 11:18 ` Grant Coady
2006-01-09 2:37 ` Jesse Brandeburg
2006-01-09 2:46 ` Lee Revell
2006-01-09 2:59 ` Grant Coady
2006-01-09 6:56 ` Grant Coady
2006-01-08 11:05 ` Grant Coady
2006-01-08 18:21 ` Octavio Alvarez Piza [this message]
2006-01-08 19:27 ` Grant Coady
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