From: Jens Axboe <axboe@suse.de>
To: Dave Olien <dmo@osdl.org>, akpm@digeo.com
Cc: linux-kernel@vger.kernel.org, markw@osdl.org, cliffw@osdl.org,
maryedie@osdl.org, jenny@osdl.org
Subject: Re: [BUG] BUG_ON in I/O scheduler, bugme # 288
Date: Fri, 24 Jan 2003 08:50:01 +0100 [thread overview]
Message-ID: <20030124075001.GE910@suse.de> (raw)
In-Reply-To: <20030123135448.A8801@acpi.pdx.osdl.net>
On Thu, Jan 23 2003, Dave Olien wrote:
>
> Jens, Andrew
>
> The group here doing dbt2 workload measurements have hit a couple of
> problems APPARENTLY in the block I/O scheduler when doing write-intensive
> raw disk I/O through a DAC960 extremeraid 2000 controller.
> This wasn't a problem in 2.5.49. It has appeared since then.
>
> I've filed a bug on the OSDL bugme database. You can read it at:
>
> http://bugme.osdl.org/show_bug.cgi?id=288
>
> I've also put a more complete report in my web site:
>
> http://www.osdl.org/archive/dmo/deadline_bugon.
A request got on the fifo, but not in the sort tree. This is most likely
an alias. Ah yes I see it, it can happen when two requests are merged.
I'll be back with a fix for this soon.
--
Jens Axboe
next prev parent reply other threads:[~2003-01-24 7:41 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-23 21:54 [BUG] BUG_ON in I/O scheduler, bugme # 288 Dave Olien
2003-01-23 22:38 ` Andrew Morton
2003-01-23 22:34 ` Dave Olien
2003-01-24 7:50 ` Jens Axboe
2003-01-24 15:47 ` Dave Olien
2003-01-24 1:38 ` Nick Piggin
2003-01-24 2:00 ` Andrew Morton
2003-01-24 2:20 ` Nick Piggin
2003-01-24 7:50 ` Jens Axboe [this message]
2003-01-24 15:53 ` Dave Olien
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