From owner-freebsd-performance@FreeBSD.ORG Wed Feb 11 18:23:09 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 44B6A106566B for ; Wed, 11 Feb 2009 18:23:09 +0000 (UTC) (envelope-from mui@mui.fi) Received: from smtp-68.nebula.fi (smtp-68.nebula.fi [83.145.220.68]) by mx1.freebsd.org (Postfix) with ESMTP id F155F8FC14 for ; Wed, 11 Feb 2009 18:23:08 +0000 (UTC) (envelope-from mui@mui.fi) Received: from muiPC (mui.adm.nblnetworks.fi [83.145.192.227]) by smtp-68.nebula.fi (Postfix) with ESMTP id 6569232B0160; Wed, 11 Feb 2009 20:07:56 +0200 (EET) From: "Markus Kovero" To: "'Bradley Radjoo'" , References: <89D2AE9E4EAAB34FABDBF2913867C62F1CB4B133@ZABRYSVISEX04.af.didata.local> In-Reply-To: <89D2AE9E4EAAB34FABDBF2913867C62F1CB4B133@ZABRYSVISEX04.af.didata.local> Date: Wed, 11 Feb 2009 20:07:56 +0200 Message-ID: <153301c98c73$aa948e80$ffbdab80$@fi> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AcmMW/daWeB+B54uTzugRKhDs/7cEAAF5Atg Content-Language: fi X-Spam-Status: No, score=0.0 required=5.0 tests=none autolearn=unavailable version=3.2.4 X-Spam-Checker-Version: SpamAssassin 3.2.4 (2008-01-01) on smtp-68.nebula.fi X-Mailman-Approved-At: Wed, 11 Feb 2009 18:30:37 +0000 Cc: Subject: RE: 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 18:23:09 -0000 Hi, have you tried difference between UP and SMP kernels, years ago there were serious performance hit with SMP-kernel and adaptec/dell perc Yours Markus Kovero -----Original Message----- From: owner-freebsd-performance@freebsd.org [mailto:owner-freebsd-performance@freebsd.org] On Behalf Of Bradley Radjoo Sent: 11. helmikuuta 2009 17:18 To: freebsd-performance@freebsd.org Subject: Extremely slow write speeds to disk : FreeBSD 7.1 and Dell SAS 6/iR Adapter 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. BIOS Version 1.3.0 Running Raid 1 (ext3) NOTE : - 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+Confidentiality+Notice+and+Disclaimer.htm. Should you not have Web access, send a mail to disclaimers@is.co.za and a copy will be emailed to you. _______________________________________________ freebsd-performance@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "freebsd-performance-unsubscribe@freebsd.org"