From owner-freebsd-hackers Wed May 23 8: 1:28 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from wilma.widomaker.com (wilma.widomaker.com [204.17.220.5]) by hub.freebsd.org (Postfix) with ESMTP id 9325A37B43C for ; Wed, 23 May 2001 08:01:24 -0700 (PDT) (envelope-from shannon@daydream.shannon.net) Received: from [209.96.185.98] (helo=escape.shannon.net) by wilma.widomaker.com with esmtp (Exim 3.22 #2) id 152a8T-000JsB-00; Wed, 23 May 2001 11:01:18 -0400 Received: from daydream (mail@daydream.shannon.net [192.168.1.10]) by escape.shannon.net (8.11.0/8.8.8) with ESMTP id f4NEcHh14565; Wed, 23 May 2001 10:38:17 -0400 (EDT) Received: from shannon by daydream with local (Exim 3.12 #1 (Debian)) id 152Zm9-0003QY-00; Wed, 23 May 2001 10:38:13 -0400 Date: Wed, 23 May 2001 10:38:13 -0400 From: Shannon Hendrix To: "Daniel C. Sobral" Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: technical comparison Message-ID: <20010523103811.A13163@widomaker.com> Mail-Followup-To: "Daniel C. Sobral" , freebsd-hackers@FreeBSD.ORG References: <200105221816.f4MIGK1171051@saturn.cs.uml.edu> <3B0AB4B1.78A0FB0A@mitre.org> <20010522212029.D2734@widomaker.com> <3B0B187D.47C98452@newsguy.com> <20010522223120.C5012@widomaker.com> <3B0B88A1.BFB8D073@newsguy.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <3B0B88A1.BFB8D073@newsguy.com>; from dcs@newsguy.com on Wed, May 23, 2001 at 06:53:37AM -0300 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Wed, May 23, 2001 at 06:53:37AM -0300, Daniel C. Sobral wrote: > > I cannot verify that with my drive, but my largest is 18GB so maybe > > the difference is not as pronounced as on some newer drives like those > > (currently) monster 70GB drives. > > It should be measurable. Actually, I edited too much. I have seen a difference, but it was too small to care abot on my system. These are 7200rpm 18GB drives too. The other variances in filesystem performance seem to overshadow the difference. The only thing I ever did to pick up some speed was to move some data on a raw device to the faster tracks. I was streaming it in so the speedup was good. I also picked up some performance on one Linux system by putting swap in the faster tracks. But for the most part, I've never been able to tell. I have read that on the 40-80GB drives, it's very noticeable. In fact, the IBM Ultrastars are supposed to be faster than their electronics can handle on the very outer tracks. -- "Secrecy is the beginning of tyranny." -- Unknown | | | | | | ________________________________________________________________ / | \ s h a n n o n @ w i d o m a k e r . c o m _/ | \_ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message