From owner-freebsd-stable@FreeBSD.ORG Sun Apr 9 19:16:26 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id F388616A404 for ; Sun, 9 Apr 2006 19:16:25 +0000 (UTC) (envelope-from fbsd@1command.com) Received: from mail.1command.com (mail.1command.com [216.177.243.35]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2ECB543D53 for ; Sun, 9 Apr 2006 19:16:24 +0000 (GMT) (envelope-from fbsd@1command.com) Received: from mail.1command.com (localhost.1command.com [127.0.0.1]) by mail.1command.com (8.13.3/8.13.3) with ESMTP id k39JGOnR007216 for ; Sun, 9 Apr 2006 12:16:24 -0700 (PDT) (envelope-from fbsd@1command.com) Received: (from www@localhost) by mail.1command.com (8.13.3/8.13.3/Submit) id k39JGOiv007215 for freebsd-stable@freebsd.org; Sun, 9 Apr 2006 12:16:24 -0700 (PDT) (envelope-from fbsd@1command.com) Received: from mail.1command.com (mail.1command.com [216.177.243.35]) by webmail.1command.com (H.R. Communications Messaging System) with HTTP; Sun, 09 Apr 2006 12:16:24 -0700 Message-ID: <20060409121624.iu6nwo6s680s8c4g@webmail.1command.com> X-Priority: 3 (Normal) Date: Sun, 09 Apr 2006 12:16:24 -0700 From: "Chris H." To: freebsd-stable@freebsd.org References: <20060406192950.GE700@turion.vk2pj.dyndns.org> <20060408203233.K67402@woozle.rinet.ru> <20060408212421.GB720@turion.vk2pj.dyndns.org> <20060408160304.ek1xxodrkok4gw4g@webmail.1command.com> <44384EB8.8090803@samsco.org> <20060409182254.GL41551@over-yonder.net> In-Reply-To: <20060409182254.GL41551@over-yonder.net> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format="flowed" Content-Disposition: inline Content-Transfer-Encoding: 7bit User-Agent: H.R. Communications Internet Messaging System (HCIMS) H3 (4.0.4) / FreeBSD-5.5 Subject: Re: Pros and Cons of amd64 (versus i386). X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 09 Apr 2006 19:16:26 -0000 Quoting "Matthew D. Fuller" : > On Sat, Apr 08, 2006 at 06:00:56PM -0600 I heard the voice of > Scott Long, and lo! it spake thus: >> >> Modern disks (I don't know how to define a cutoff to this term, >> unfortunately) definitely put more bits onto the outer rim of the >> platter than the inner rim. > > Pretty much any disk you'd currently find, I'd say. > > diskinfo -t won't run through on my 4 or 2 gigs ("disk too small for > test" :), but on my 9 gigger: > > Transfer rates: > outside: 102400 kbytes in 5.215159 sec = 19635 kbytes/sec > middle: 102400 kbytes in 6.268067 sec = 16337 kbytes/sec > inside: 102400 kbytes in 8.237962 sec = 12430 kbytes/sec > > da4 at ahc2 bus 0 target 5 lun 0 > da4: Fixed Direct Access SCSI-3 device > da4: 40.000MB/s transfers (20.000MHz, offset 31, 16bit), Tagged > Queueing Enabled > da4: 8748MB (17916240 512 byte sectors: 255H 63S/T 1115C) Well, as long as we're at it: 512 # sectorsize 15728640000 # mediasize in bytes (15G) 30720000 # mediasize in sectors 1912 # Cylinders according to firmware. 255 # Heads according to firmware. 63 # Sectors according to firmware. Seek times: Full stroke: 250 iter in 4.058565 sec = 16.234 msec Half stroke: 250 iter in 3.249077 sec = 12.996 msec Quarter stroke: 500 iter in 5.544275 sec = 11.089 msec Short forward: 400 iter in 2.595878 sec = 6.490 msec Short backward: 400 iter in 2.547004 sec = 6.368 msec Seq outer: 2048 iter in 0.486885 sec = 0.238 msec Seq inner: 2048 iter in 0.500109 sec = 0.244 msec Transfer rates: outside: 102400 kbytes in 5.517532 sec = 18559 kbytes/sec middle: 102400 kbytes in 6.233613 sec = 16427 kbytes/sec inside: 102400 kbytes in 8.044342 sec = 12729 kbytes/sec at ahc0 bus 0 target 1 lun 0 Fixed Direct Access SCSI-2 device Serial Number WS7060096840 40.000MB/s transfers (20.000MHz, offset 31, 16bit) Interesting to note (to me anyway) is my SCSI reports fastest on the outside whereas my (earlier reported) ATA reports faster in the center (middle). --Chris H. > > > -- > Matthew Fuller (MF4839) | fullermd@over-yonder.net > Systems/Network Administrator | http://www.over-yonder.net/~fullermd/ > On the Internet, nobody can hear you scream. > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" > -- Linux: As OS for users who think their using UNIX. ----------------------------------------------------------------- FreeBSD 5.4-RELEASE-p12 (SMP - 900x2) Tue Mar 7 19:37:23 PST 2006 /////////////////////////////////////////////////////////////////