From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bernardo Innocenti Subject: Re: Writing performance problem with SAS1068 Date: Wed, 07 Feb 2007 21:57:02 +0100 Message-ID: <45CA3D1E.9030203@develer.com> References: <45C84333.709@develer.com> <45C8D686.7010103@torque.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from 81-174-33-43.f5.ngi.it ([81.174.33.43]:34786 "EHLO develer.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1030640AbXBGU7I (ORCPT ); Wed, 7 Feb 2007 15:59:08 -0500 In-Reply-To: <45C8D686.7010103@torque.net> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: dougg@torque.net Cc: mpt_linux_developer@lsil.com, lkml , Develer IT Infrastructure , linux-scsi@vger.kernel.org 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/