From owner-freebsd-scsi@FreeBSD.ORG Sat May 8 12:56:53 2004 Return-Path: Delivered-To: freebsd-scsi@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B27BA16A4CE for ; Sat, 8 May 2004 12:56:53 -0700 (PDT) Received: from seven.Alameda.net (seven.alameda.net [64.81.53.71]) by mx1.FreeBSD.org (Postfix) with ESMTP id 79A1943D4C for ; Sat, 8 May 2004 12:56:53 -0700 (PDT) (envelope-from ulf@Alameda.net) Received: by seven.Alameda.net (Postfix, from userid 1000) id E028C3A201; Sat, 8 May 2004 12:56:52 -0700 (PDT) Date: Sat, 8 May 2004 12:56:52 -0700 From: Ulf Zimmermann To: freebsd-scsi@freebsd.org Message-ID: <20040508195652.GA58545@seven.alameda.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.1i Organization: Alameda Networks, Inc. X-Operating-System: FreeBSD 4.8-RELEASE-p5 Subject: HP 5plus raid controller performance under 5.2.1-REL X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: ulf@Alameda.net List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 08 May 2004 19:56:53 -0000 As there has been plenty of talk lately about performance of different raid controllers, I thought I would post some numbers for the HP DL380g3 with built-in 5plus controller. The system is a single P4-3.06GHz/512KB Cache/533MHz FSB, 6GB memory (running PAE kernel), 6x36GB 15K RPM drives in a raid 5 setup. The controller has 64MB cache, which is set to 50%/50% for read/write. Using the method used in another post, here are the results: evil root /home/ulf # dd if=/dev/zero of=output bs=64k count=200000 200000+0 records in 200000+0 records out 13107200000 bytes transferred in 344.324989 secs (38066363 bytes/sec) evil root /home/ulf # dd of=/dev/null if=output bs=64k count=200000 200000+0 records in 200000+0 records out 13107200000 bytes transferred in 176.682004 secs (74185258 bytes/sec) -- Regards, Ulf. --------------------------------------------------------------------- Ulf Zimmermann, 1525 Pacific Ave., Alameda, CA-94501, #: 510-865-0204 You can find my resume at: http://seven.Alameda.net/~ulf/resume.html