From owner-freebsd-stable@FreeBSD.ORG Sun Apr 1 15:25:17 2007 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 985D916A403 for ; Sun, 1 Apr 2007 15:25:17 +0000 (UTC) (envelope-from richardtector@thekeelecentre.com) Received: from mx0.thekeelecentre.com (mx0.thekeelecentre.com [217.206.238.167]) by mx1.freebsd.org (Postfix) with ESMTP id 54FC013C458 for ; Sun, 1 Apr 2007 15:25:17 +0000 (UTC) (envelope-from richardtector@thekeelecentre.com) Received: from localhost (mailfil.mx0.thekeelecentre.com [217.206.238.165]) by mx0.thekeelecentre.com (Postfix) with ESMTP id 53B3C40C5; Sun, 1 Apr 2007 16:25:16 +0100 (BST) X-Virus-Scanned: by amavisd-new at mx0.thekeelecentre.com Received: from mx0.thekeelecentre.com ([217.206.238.167]) by localhost (mailfil.mx0.thekeelecentre.com [217.206.238.165]) (amavisd-new, port 10024) with ESMTP id AznGK5yhqDxP; Sun, 1 Apr 2007 16:25:13 +0100 (BST) Received: from [217.206.238.190] (sylvester.tector.org.uk [217.206.238.190]) by mx0.thekeelecentre.com (Postfix) with ESMTP id 53CF8405B; Sun, 1 Apr 2007 16:25:13 +0100 (BST) Message-ID: <460FCE61.7090006@thekeelecentre.com> Date: Sun, 01 Apr 2007 16:23:13 +0100 From: Richard Tector User-Agent: Thunderbird 1.5.0.10 (Windows/20070221) MIME-Version: 1.0 To: Matthew Jacob References: <460959E8.207@thekeelecentre.com> <7579f7fb0703271102q1a866897x2d63a86e72895125@mail.gmail.com> <46095CE5.5080600@thekeelecentre.com> <7579f7fb0703272018i68983d5cvb9fe84c79cebd473@mail.gmail.com> In-Reply-To: <7579f7fb0703272018i68983d5cvb9fe84c79cebd473@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-stable@freebsd.org Subject: Re: Dell SAS5 Performance Issue X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 01 Apr 2007 15:25:17 -0000 Matthew Jacob wrote: > On 3/27/07, Richard Tector wrote: >> Matthew Jacob wrote: >> > It's been seen before but the fix isn't know yet. >> > >> > On 3/27/07, Richard Tector wrote: >> >> I'm suffering from very slow write performance on a Dell PowerEdge >> 860 >> >> with the SAS5/IR controller (mpt driver) running either >> 6.2-RELEASE or >> >> 6.2-STABLE with sources from yesterday. The controller hosts 2 >> Western >> >> Digital 320GB SATA disks in a RAID1 configuration. >> >> Reads approach 65MB/s however writes appear extremely slow, in the >> >> region of 6-7MB/s with a dd and a blocksize of 1MB all the way >> down to >> >> about 300KB/s while extracting a ports snapshot. >> >> >> >> It was suggested to me that perhaps write caching has been >> disabled on >> >> the controller however no options exist within the BIOS >> configuration to >> >> view/adjust *any* caching options. >> >> >> >> Has anyone else experienced this issue? If so how did they resolve >> it? >> >> Also, is there any way to toggle the caching settings from FreeBSD? >> A perhaps unrealted issue: I've noticed a large number of messages being produced by the mpt driver after boot occuring approximately every 90 seconds. Apr 1 15:51:43 moses kernel: mpt0: mpt_cam_event: 0x14 Apr 1 15:51:43 moses kernel: mpt0: Unhandled Event Notify Frame. Event 0x14 (ACK not required). Apr 1 15:53:19 moses kernel: mpt0: mpt_cam_event: 0x14 Apr 1 15:53:19 moses kernel: mpt0: Unhandled Event Notify Frame. Event 0x14 (ACK not required). Any thoughts anyone? Is there any way to find out what the events correspond to? Regards, Richard