From: "Justin T. Gibbs" <gibbs@scsiguy.com>
To: Stefan Foerster <stefan@stefan-foerster.de>,
linux-kernel@vger.kernel.org
Subject: Re: Very bad interactivity with 2.6.0 and SCSI disks (aic7xxx)
Date: Mon, 18 Aug 2003 13:04:12 -0600 [thread overview]
Message-ID: <1294265408.1061233452@aslan.btc.adaptec.com> (raw)
In-Reply-To: <20030818013243.GB21665@in-ws-001.cid-net.de>
> But as soon as I do a
>
> while true; do dd if=/dev/zero of=test bs=1024 count=1048576 ; rm test
> ; done
>
> on my SCSI disk, the system becomes completely unusuable after a few
> seconds. Everything is running at the speed of molasses, even screen
> redrawing, the music stops playing for some seconds, my mouse hangs
> and so on.
It sounds like the system is not limiting the rate at which an I/O
hog can dirty pages, so this one process ends up consuming all of
your I/O bandwidth.
--
Justin
next prev parent reply other threads:[~2003-08-18 19:02 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-18 1:32 Very bad interactivity with 2.6.0 and SCSI disks (aic7xxx) Stefan Foerster
2003-08-18 2:21 ` Andrew Morton
2003-08-18 2:31 ` William Lee Irwin III
2003-08-18 5:48 ` Stefan Foerster
2003-08-18 6:03 ` Andrew Morton
2003-08-19 5:43 ` Stefan Foerster
2003-08-19 5:54 ` Nick Piggin
2003-08-18 19:04 ` Justin T. Gibbs [this message]
2003-08-18 19:49 ` Stefan Foerster
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