From owner-freebsd-questions@FreeBSD.ORG Sun Nov 30 23:10:57 2003 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3063816A4CE for ; Sun, 30 Nov 2003 23:10:57 -0800 (PST) Received: from hobbiton.shire.net (hobbiton.shire.net [206.71.64.250]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3F8AD43FAF for ; Sun, 30 Nov 2003 23:10:56 -0800 (PST) (envelope-from chad@shire.net) Received: from [67.161.247.57] (helo=[192.168.99.66]) by hobbiton.shire.net with asmtp (TLSv1:RC4-SHA:128) (Exim 4.10) id 1AQiCs-000GDG-00; Mon, 01 Dec 2003 00:10:54 -0700 In-Reply-To: <20031127124435.GA24772@freshdot.net> References: <20031127124435.GA24772@freshdot.net> Mime-Version: 1.0 (Apple Message framework v606) Message-Id: <7F4B0982-23CD-11D8-8529-003065A70D30@shire.net> From: "Chad Leigh -- Shire.Net LLC" Date: Mon, 1 Dec 2003 00:10:51 -0700 To: Sander Smeenk X-Mailer: Apple Mail (2.606) Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on hobbiton.shire.net X-Spam-Status: No, hits=-4.9 required=5.0 tests=BAYES_00 autolearn=no version=2.60 X-Spam-Level: cc: freebsd-questions@freebsd.org Subject: Re: Vinum & U320 SCSI, slower than UDMA100 IDE ? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 01 Dec 2003 07:10:57 -0000 On Nov 27, 2003, at 5:44 AM, Sander Smeenk wrote: > Hi, > > I recently installed a Dual P4 2.8ghz with FBSD 4.9 and made a RAID10 > array of the 4 scsi disks available. The idea was that this would be > faster to read from than normal IDE disks. As a test I took the > company's web/ directory, which is 1.6gb in size and has 22082 files. > > I know it's not the most sophisticated test, but at least it shows that > on the IDE disk, this 'test' took 24 seconds to complete. On the RAID10 > array it took a whopping 73 seconds to complete. > > I would understand if the RAID10 array was as fast as IDE, or faster, > but i'm a bit amazed by these results. The RAID10 array was built on 4x > 36.7gb Ultra320 SCSI disks, connected to an Adaptec 39320D Ultra320 > SCSI > adapter, which is a PCI-X card, configured in a PCI-X slot. > Try creating the same vinum set using 4 ATA100 disks and see what happens when compared to your UeberSCSI vinum set... Chad