From owner-freebsd-questions@FreeBSD.ORG Tue Jan 16 16:47:44 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 48AA416A40F for ; Tue, 16 Jan 2007 16:47:44 +0000 (UTC) (envelope-from steve@midden.org) Received: from midden.org (midden.org [86.54.4.134]) by mx1.freebsd.org (Postfix) with ESMTP id E0BD913C45E for ; Tue, 16 Jan 2007 16:47:43 +0000 (UTC) (envelope-from steve@midden.org) Received: from www.midden.org (localhost.midden.org [127.0.0.1]) by midden.org (Postfix) with ESMTP id B3D8B11451 for ; Tue, 16 Jan 2007 16:25:28 +0000 (GMT) Received: from 86.54.4.134 (proxying for 86.54.4.134) (SquirrelMail authenticated user steve) by www.midden.org with HTTP; Tue, 16 Jan 2007 16:25:29 -0000 (UTC) Message-ID: <53186.86.54.4.134.1168964729.squirrel@www.midden.org> Date: Tue, 16 Jan 2007 16:25:29 -0000 (UTC) From: "Steven Lowry" To: freebsd-questions@freebsd.org User-Agent: SquirrelMail/1.4.9a MIME-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Priority: 3 (Normal) Importance: Normal Subject: Very Poor Raid Card Performance X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Jan 2007 16:47:44 -0000 Hello, I have been very impressed with my FreeBSD 6.2 install, I have nearly everything working but there are a few things which I need help with. The main problem is my HD performance, it is approx 6x slower than in windows XP, hopefully there is a solution. I have an LSI Megaraid 8x with four drives in a raid 5 configuration, in windows I was getting upto 60MB/s transfer rates but in FBSD I am getting upto 9MB/s. I followed the instructions in the handbook for tuning disks and I have set dma on. Being new to unix, I have no idea what to try or get system information too continue troubleshooting. If anyone could point me in the right direction or to appropriate documentation it would be much appreciated. Steve... -- Folding@home http://folding.stanford.edu/