From owner-freebsd-stable@FreeBSD.ORG Sun Nov 25 12:50:38 2007 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 966AB16A418; Sun, 25 Nov 2007 12:50:38 +0000 (UTC) (envelope-from espen@modula.no) Received: from mx2.modula.no (mx2.modula.no [193.142.30.42]) by mx1.freebsd.org (Postfix) with ESMTP id 2B05F13C474; Sun, 25 Nov 2007 12:50:37 +0000 (UTC) (envelope-from espen@modula.no) Received: from localhost (unknown [193.142.30.42]) by mx2.modula.no (Postfix) with ESMTP id C2433FD000C; Sun, 25 Nov 2007 13:30:41 +0100 (CET) Received: from mx2.modula.no ([193.142.30.42]) by localhost (mx2.modula.no [193.142.30.42]) (amavisd-new, port 10024) with ESMTP id vdqxJlq4GTO3; Sun, 25 Nov 2007 13:30:39 +0100 (CET) Received: from smtp.modula.no (smtp.modula.no [193.142.30.47]) by mx2.modula.no (Postfix) with ESMTP id B473AFD000B; Sun, 25 Nov 2007 13:30:39 +0100 (CET) Received: from espen-tagestads-computer.local (smtp.modula.no [193.142.30.47]) by smtp.modula.no (Postfix) with ESMTP id 2AFD517006E; Sun, 25 Nov 2007 13:44:03 +0100 (CET) Message-ID: <47496BE1.8080206@modula.no> Date: Sun, 25 Nov 2007 13:34:41 +0100 From: Espen Tagestad User-Agent: Thunderbird 2.0.0.9 (Macintosh/20071031) MIME-Version: 1.0 To: freebsd-hardware@freebsd.org, freebsd-stable@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Subject: SAS5IR performance issue with Dell 860 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, 25 Nov 2007 12:50:38 -0000 Hi, We recently bought 3 new Dell 860 servers with the onboard SAS5/IR SATA RAID-controller. They seem to be quite well spec'ed servers with management and everything - but I am experiencing av major performance issue with the disc i/o. On write I get at max 7-8MB/sec, while read gives a bit more (11MB/sec). I tried first with 6.2-RELEASE, and then upgraded to 6.3-PRERELEASE without any better results. I am aware of some discussion around this issue on these two maillists in the spring earlier on this year, but I have not been able to find any good resolution. My old firewall/router at home equipped with a 733Mhz Pentium 3 processor and a old 40GB IDE harddrive made around year 2001 performe better. Is there anybody out there with the same problem who has solved this issue? Could it be that this is solved in 7.0? Thanks in advance. -- med vennlig hilsen/with regards, Espen Tagestad Modula AS Tel. (+47) 23 89 75 80 Mob. (+47) 92 44 50 12 Fax. (+47) 23 89 75 81