From: Brandon Low <lostlogic@gentoo.org>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: anticipatory scheduler merged
Date: Sun, 6 Jul 2003 21:22:13 -0500 [thread overview]
Message-ID: <20030707022212.GE27027@lostlogicx.com> (raw)
In-Reply-To: <20030705133334.4cc7e11b.akpm@osdl.org>
On Sat, 07/05/03 at 13:33:34 -0700, Andrew Morton wrote:
> - These changes have been well tested, but it is five months work and
> over 100 patches. There's probably a bug or two. If you suspect that
> something has gone wrong at the block layer (lots of tasks stuck in D
> state) then please retest with `elevator=deadline'.
>
> Thanks.
I am seeing these D tasks when running 2.5.74-mm2 under a heavy seeking
load (compiling application, untarring kernel, and filesharing
simultaneously) on a slow (laptop 4200RPM) hdd. I find that after about
10 uptime when I start throwing on the seeking loads one or all of them
go to D state and any new disk IO is either blocked or very slow.
I have tested with elevator=deadline and have been unable to reproduce.
Any further testing or debugging you need me to do I can probably do
(but I'm not terribly knowledgable so I'll need step by step for said
testing). Thanks!
Brandon Low
next prev parent reply other threads:[~2003-07-07 2:07 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-05 20:33 Andrew Morton
2003-07-07 2:22 ` Brandon Low [this message]
2003-07-07 2:37 ` Nick Piggin
2003-07-07 8:24 ` James H. Cloos Jr.
2003-07-07 8:33 ` Nick Piggin
2003-07-07 8:36 ` Andrew Morton
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