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From: Tony Battersby <tonyb@cybernetics.com>
To: Andre Noll <maan@systemlinux.org>
Cc: "Arnd Hannemann" <hannemann@nets.rwth-aachen.de>,
	"adam radford" <aradford@gmail.com>,
	"Johannes Wörner" <johannes.woerner@tuebingen.mpg.de>,
	"James Bottomley" <James.Bottomley@HansenPartnership.com>,
	linux-scsi <linux-scsi@vger.kernel.org>,
	linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: Performance problems with 3ware 9500S-4LP and 2.6.25-rc3
Date: Wed, 27 Feb 2008 09:26:47 -0500	[thread overview]
Message-ID: <47C57327.6070901@cybernetics.com> (raw)
In-Reply-To: <20080227101154.GD30767@skl-net.de>

Andre Noll 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
>   
This is not 3ware-specific, but kernel 2.6.24 has new per-device write
throttling that might help with the responsiveness issue:

http://kernelnewbies.org/LinuxChanges#head-92340ffcec39e7c2a09fd933243fb18eda57f1b4
http://lwn.net/Articles/245600/

Also, check to see if the 3ware controller has a background initialize
or verify in progress, since that will obviously slow things down until
it is complete.

Tony


  reply	other threads:[~2008-02-27 14:26 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-26 17:43 Performance problems with 3ware 9500S-4LP and 2.6.25-rc3 Andre Noll
2008-02-26 17:54 ` Bernd Schubert
2008-02-27 10:10   ` Andre Noll
2008-02-26 18:33 ` Chris Snook
2008-02-27 10:11   ` Andre Noll
2008-02-27 19:55     ` Chris Snook
2008-02-28  9:46       ` Andre Noll
2008-02-26 23:07 ` Arnd Hannemann
2008-02-27 10:11   ` Andre Noll
2008-02-27 14:26     ` Tony Battersby [this message]
2008-02-27 17:05       ` Andre Noll
2008-02-27 20:06         ` adam radford
2008-02-28  9:46           ` Andre Noll

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