linux-kernel - Re: Writing performance problem with SAS1068

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Message-ID: <45CA3D1E.9030203@develer.com>
Date:	Wed, 07 Feb 2007 21:57:02 +0100
From:	Bernardo Innocenti <bernie@...eler.com>
To:	dougg@...que.net
CC:	mpt_linux_developer@...l.com, lkml <linux-kernel@...r.kernel.org>,
	Develer IT Infrastructure <it@...ts.develer.com>,
	linux-scsi@...r.kernel.org
Subject: Re: Writing performance problem with SAS1068

Douglas Gilbert wrote:

> You may like to check that Write Cache Enable is on with:
> 'sdparm --get=WCE /dev/sdd'.

Yeah, yeah!  Works fine once I toggled the WCE to 1.  Writing
flies at 70MB/s, which is extremely good for those desktop-grade
disks (Seagate Barracuda SATA 250GB @7200RPM).

Thank you very much!

But... who do you think I should bug to make this the system
default?  Does write caching need to be enabled by the driver
itself, in the SCSI layer or perhaps by the distro initscripts?

-- 
   // Bernardo Innocenti - Develer S.r.l., R&D dept.
 \X/  http://www.develer.com/
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