From owner-freebsd-performance@FreeBSD.ORG Thu Jun 19 05:37:42 2003 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B5FBD37B401 for ; Thu, 19 Jun 2003 05:37:42 -0700 (PDT) Received: from otter3.centtech.com (moat3.centtech.com [207.200.51.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id BCCA543FA3 for ; Thu, 19 Jun 2003 05:37:41 -0700 (PDT) (envelope-from anderson@centtech.com) Received: from centtech.com (electron.centtech.com [204.177.173.173]) by otter3.centtech.com (8.12.3/8.12.3) with ESMTP id h5JCbe56090886; Thu, 19 Jun 2003 07:37:40 -0500 (CDT) (envelope-from anderson@centtech.com) Message-ID: <3EF1AE85.2080505@centtech.com> Date: Thu, 19 Jun 2003 07:37:25 -0500 From: Eric Anderson User-Agent: Mozilla/5.0 (X11; U; Linux i386; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0 X-Accept-Language: en-us, en MIME-Version: 1.0 To: s_porotnikov@nojabrsk.ru References: <741132145421.20030619172208@nojabrsk.ru> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit cc: freebsd-performance@freebsd.org Subject: Re: freebsd-performance Digest, Vol 4, Issue 9 X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 19 Jun 2003 12:37:43 -0000 s_porotnikov@nojabrsk.ru wrote: > I tested software RAID 0 via VINUM on FreeBSD 5.1 three hard drive IBM > Ultrastor IC35L073VCD210 connected to onboard Adaptec dual chanel AIC-7899W > based controller (64 bit 66MHz PCI), and compared them to Adaptec 2100 RAID > controller (32 bit 33MHz PCI). The performance hardware RAID is appeared > on 15 % less than VINUM. CPU usage is same. > Test utils are rawio and dd with many fork process (8). > The CPU are Xeon 2.4 GHz, SuperMicro MB P4DP6Q with Intel E7500 Chipset. Interestingly enough, I found FreeBSD 4.8 to be faster at local disk writes than FreeBSD 5.1. About 50% faster. Eric -- ------------------------------------------------------------------ Eric Anderson Systems Administrator Centaur Technology Attitudes are contagious, is yours worth catching? ------------------------------------------------------------------