From: "James Stevenson" <mail-lists@stev.org>
To: "Roy Sigurd Karlsbakk" <roy@karlsbakk.net>,
"Marcelo Tosatti" <marcelo@conectiva.com.br>
Cc: <linux-kernel@vger.kernel.org>
Subject: Re: /proc/sys/vm/(max|min)-readahead effect????
Date: Wed, 5 Dec 2001 19:43:57 -0000 [thread overview]
Message-ID: <019401c17dc5$2e946130$0801a8c0@Stev.org> (raw)
In-Reply-To: <Pine.LNX.4.30.0112051917430.3021-100000@mustard.heime.net>
> > Basically you cannot simply expect an increase in readahead size to
> > increase performance:
> >
> > 1) The files you created may not be sequential
>
> Beleive me - they are! Created with 'dd' secuentially
thats still does not mean they are sequential creating
large files almost always causes them to fragment.
Actually does anyone know of an easy way to find out
if certin files are fragmented and by how much ?
next prev parent reply other threads:[~2001-12-05 19:53 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-05 16:21 Roy Sigurd Karlsbakk
2001-12-05 16:51 ` Marcelo Tosatti
2001-12-05 18:09 ` Roy Sigurd Karlsbakk
2001-12-05 16:58 ` Marcelo Tosatti
2001-12-05 18:20 ` Roy Sigurd Karlsbakk
2001-12-05 19:43 ` James Stevenson [this message]
2001-12-05 20:06 ` Roy Sigurd Karlsbakk
2001-12-05 20:53 ` James Stevenson
2001-12-06 11:45 ` Roy Sigurd Karlsbakk
2001-12-06 18:44 ` Bernd Eckenfels
2001-12-05 18:22 ` Rik van Riel
2001-12-05 18:27 ` Roy Sigurd Karlsbakk
2001-12-06 10:09 ` Martin Dalecki
2001-12-05 20:13 ` Andrew Morton
2001-12-05 20:53 ` Roger Larsson
2001-12-06 11:31 ` Roy Sigurd Karlsbakk
2001-12-06 18:46 ` Bernd Eckenfels
2001-12-07 11:25 ` Roy Sigurd Karlsbakk
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