From: Simone Piunno <simone.piunno@wseurope.com>
Organization: Wireless Solutions
To: Jens Axboe <axboe@suse.de>
Subject: Re: bonnie++ uninterruptible under heavy I/O load
Date: Fri, 11 Mar 2005 16:58:04 +0100
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Cc: Fabio Coatti <fabio.coatti@wseurope.com>, Baruch Even <baruch@ev-en.org>,
       Denis Vlasenko <vda@port.imtp.ilyichevsk.odessa.ua>,
       linux-kernel@vger.kernel.org
References: <200503111208.20283.simone.piunno@wseurope.com> <200503111650.07336.fabio.coatti@wseurope.com> <20050311155400.GL28188@suse.de>
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Alle 16:54, venerd? 11 marzo 2005, Jens Axboe ha scritto:

> I'd guess that your problem is queueing, if you have a ton of pending
> requests in the hardware it will take forever to get a new request
> through. There's nothing the io scheduler can do to help you there,
> really. The /proc/driver/cciss/cciss0 you originall posted, was that
> from before or after running bonnie++? I have no latency experience with
> cciss, at least IDE/SATA/SCSI should work alright.

It was after running bonnie++.

-- 
Simone Piunno, chief architect
Wireless Solutions SPA - DADA group
Europe HQ, via Castiglione 25 Bologna
web:www.dada-ws.com tel:+39512966811 fax:+39512966800
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