From: "Hemmann, Volker Armin" <volker.armin.hemmann@tu-clausthal.de>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] linux' IO performance sucks
Date: Wed, 5 Jul 2006 07:45:00 +0200 [thread overview]
Message-ID: <200607050745.00332.volker.armin.hemmann@tu-clausthal.de> (raw)
In-Reply-To: <e8fci1$6ui$1@sea.gmane.org>
On Wednesday 05 July 2006 05:43, Sven Köhler wrote:
> Hi,
>
> sorry for the silly subject, but did you ever experience the following?:
>
> i have a fileserver, i copy a file to it - let's say 600MB.
>
> So about every 200MB (i guess the linux box writes the data into the
> cache in the RAM first) linux writes the harddisk. But during that time
> - during the time it writes that 200MB to disk, there is no chance for
> any other IO. I'm playing an mp3 from the very same fileserver. It stops
> playing, because the machine does answer the read-requests.
>
> So what's going on here?
>
> Why does Linux write so huge amounts of data to the disk? Why does Linux
> not stop writing for a while to fullfil the read-requests? And so on ...
>
> Any idea, on how to imrpove that?
using the cfq or deadline io-scheduler?
--
gentoo-user@gentoo.org mailing list
next prev parent reply other threads:[~2006-07-05 5:51 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-05 3:43 [gentoo-user] linux' IO performance sucks Sven Köhler
2006-07-05 4:31 ` Thomas Cort
2006-07-05 4:33 ` Richard Fish
2006-07-05 5:45 ` Hemmann, Volker Armin [this message]
2006-07-05 10:38 ` Daniel Drake
2006-07-05 10:43 ` Daniel
2006-07-05 21:55 ` Hemmann, Volker Armin
2006-07-05 22:51 ` Daniel Iliev
2006-07-06 0:45 ` Daniel Iliev
2006-07-06 2:01 ` Dale
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