linux-kernel - Re: Performance problems with 3ware 9500S-4LP and 2.6.25-rc3

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Message-ID: <20080228094608.GC29468@skl-net.de>
Date:	Thu, 28 Feb 2008 10:46:08 +0100
From:	Andre Noll <maan@...temlinux.org>
To:	adam radford <aradford@...il.com>
Cc:	Tony Battersby <tonyb@...ernetics.com>,
	Arnd Hannemann <hannemann@...s.rwth-aachen.de>,
	Johannes Wörner 
	<johannes.woerner@...bingen.mpg.de>,
	James Bottomley <James.Bottomley@...senpartnership.com>,
	linux-scsi <linux-scsi@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: Performance problems with 3ware 9500S-4LP and 2.6.25-rc3

On 12:06, adam radford wrote:
> On Wed, Feb 27, 2008 at 9:05 AM, Andre Noll <maan@...temlinux.org> wrote:
> > On 09:26, Tony Battersby wrote:
> >  > > Thanks, this helped a lot. However, there does not seem to be a way
> >  > > to make the system more responsive, which is really the problem we
> >  > > are experiencing.
> 
> Can you try turning down /sys/block/sdX/device/queue_depth to 16 and
> see if that improves your responsiveness?

Yes, that setting seems to improve responsiveness greatly.

Thanks a lot
Andre
-- 
The only person who always got his work done by Friday was Robinson Crusoe

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