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

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Message-ID: <b1bc6a000802271206l3e99afedt64d5f7cc238365d6@mail.gmail.com>
Date:	Wed, 27 Feb 2008 12:06:08 -0800
From:	"adam radford" <aradford@...il.com>
To:	"Andre Noll" <maan@...temlinux.org>
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 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.

Andre,

Can you try turning down /sys/block/sdX/device/queue_depth to 16 and
see if that improves your responsiveness?

-Adam
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