From owner-freebsd-performance@FreeBSD.ORG Wed Feb 11 15:38:29 2009 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 156C8106564A for ; Wed, 11 Feb 2009 15:38:29 +0000 (UTC) (envelope-from Bradley.Radjoo@is.co.za) Received: from phobytor.is.co.za (phobytor.is.co.za [196.4.160.171]) by mx1.freebsd.org (Postfix) with ESMTP id F2B3A8FC1C for ; Wed, 11 Feb 2009 15:38:27 +0000 (UTC) (envelope-from Bradley.Radjoo@is.co.za) Received: from phobytor.is.co.za (localhost [127.0.0.1]) by phobytor.is.co.za (Postfix) with ESMTP id CA56D3BC405 for ; Wed, 11 Feb 2009 17:18:24 +0200 (SAST) Received: from ZABRYSVISMFW (zajnbisit.mfw.is.co.za [196.26.2.106]) by phobytor.is.co.za (Postfix) with ESMTP id 993023BC3FD for ; Wed, 11 Feb 2009 17:18:24 +0200 (SAST) Received: from zabrysvisex06.af.didata.local (Not Verified[10.1.8.16]) by ZABRYSVISMFW with MailMarshal (v6, 1, 8, 2172) id ; Wed, 11 Feb 2009 17:16:14 +0200 Received: from ZABRYSVISEX04.af.didata.local ([10.1.8.149]) by zabrysvisex06.af.didata.local with Microsoft SMTPSVC(6.0.3790.3959); Wed, 11 Feb 2009 17:18:23 +0200 X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Date: Wed, 11 Feb 2009 17:18:17 +0200 Message-ID: <89D2AE9E4EAAB34FABDBF2913867C62F1CB4B133@ZABRYSVISEX04.af.didata.local> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Extremely slow write speeds to disk : FreeBSD 7.1 and Dell SAS 6/iR Adapter Thread-Index: AcmMW/daWeB+B54uTzugRKhDs/7cEA== From: "Bradley Radjoo" To: X-OriginalArrivalTime: 11 Feb 2009 15:18:23.0169 (UTC) FILETIME=[FAA35310:01C98C5B] X-Virus-Scanned: ClamAV using ClamSMTP Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: Extremely slow write speeds to disk : FreeBSD 7.1 and Dell SAS 6/iR Adapter X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 11 Feb 2009 15:38:29 -0000 Greetings, Please can you assist. I have attempted most of the popular BSD Variants such as NetBSD, Open BSD, FreeBSD... The only distrubution that seems to work on the is Dell SAS 6/iR Adapter is FreeBSD 7.1 Firmware version & date : 9/29/2008 00.25.47.00 But the issue is that writing to disk is extremely slow...i.e. 14Mb per second.... If I install any other linux distribution, like CentOS, write speek is the way it should be..it averages around 190Mb+ per second I was hoping if it were at all possible for you to assist me in with a later RAID Controller Driver for the SAS 6/iR Adapter This is on a Dell PowerEdge R300 Server.=20 BIOS Version 1.3.0 Running Raid 1 (ext3) NOTE :=20 - Disabling ACPI does not make a difference - I do have the latest Firmware across the hardware Kind Regards, Bradley Please note: This email and its content are subject to the disclaimer as = displayed at the following link http://www.is.co.za/legal/E-mail+Confiden= tiality+Notice+and+Disclaimer.htm. Should you not have Web access, send a= =20mail to disclaimers@is.co.za and a copy will be emailed to you.