From: Robert Hancock <hancockr@shaw.ca>
To: Andi Kleen <ak@suse.de>
Cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org
Subject: Re: [PATCH] sata_nv ADMA/NCQ support for nForce4 (updated) II
Date: Sun, 22 Oct 2006 01:09:58 -0600 [thread overview]
Message-ID: <453B1946.3070201@shaw.ca> (raw)
In-Reply-To: <p73ejt1m5gj.fsf_-_@verdi.suse.de>
Andi Kleen wrote:
> Andi Kleen <ak@suse.de> writes:
>
>> I tested it on a NF4-Professional system with 8GB RAM and a single
>> SATA disk. It first did nicely in LTP and some other tests,
>> but during a bonnie++ run it eventually blocked with all
>> IO hanging forever. No output either. I did a full backtrace
>> and it just showed the processes waiting for a IO wakeup.
>
> Hmm, to follow myself up: after a few more minutes the machine recovered
> and i could log in again (overall the stall was at least 5+ minutes
> though)
>
> Not sure whom to blame, the IO driver might be actually innocent
> and it just be one of the usual known but unfixed IO starvation problems.
>
> -Andi
Hmm.. The system hanging up for 5 minutes and then recovering seems
rather odd, as far as I know the timeouts in libata are all quite a bit
shorter than that. Was there anything unusual in dmesg? If the IO
commands weren't completing at the driver level then I would expect the
error handling to kick in in some fashion..
--
Robert Hancock Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@nospamshaw.ca
Home Page: http://www.roberthancock.com/
next prev parent reply other threads:[~2006-10-22 7:10 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-21 1:51 [PATCH] sata_nv ADMA/NCQ support for nForce4 (updated) Robert Hancock
2006-10-22 2:41 ` Andi Kleen
2006-10-22 2:47 ` [PATCH] sata_nv ADMA/NCQ support for nForce4 (updated) II Andi Kleen
2006-10-22 7:09 ` Robert Hancock [this message]
2006-10-22 13:19 ` Andi Kleen
2006-10-22 16:36 ` Robert Hancock
2006-10-23 1:45 ` [PATCH] sata_nv ADMA/NCQ support for nForce4 (v6) Robert Hancock
2006-10-26 5:21 ` [PATCH] sata_nv ADMA/NCQ support for nForce4 (v7) Robert Hancock
2006-10-27 21:28 ` Allen Martin
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