From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261497AbVGYU0e (ORCPT ); Mon, 25 Jul 2005 16:26:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261502AbVGYU0e (ORCPT ); Mon, 25 Jul 2005 16:26:34 -0400 Received: from dtp.xs4all.nl ([80.126.206.180]:35667 "HELO abra2.bitwizard.nl") by vger.kernel.org with SMTP id S261497AbVGYU0d (ORCPT ); Mon, 25 Jul 2005 16:26:33 -0400 Date: Mon, 25 Jul 2005 22:26:32 +0200 From: Erik Mouw To: Andreas Baer Cc: Willy Tarreau , linux-kernel@vger.kernel.org, pmarques@grupopie.com Subject: Re: Problem with Asus P4C800-DX and P4 -Northwood- Message-ID: <20050725202631.GB20811@harddisk-recovery.com> References: <42E4373D.1070607@gmx.net> <20050725051236.GS8907@alpha.home.local> <42E4E4B0.6050904@gmx.net> <20050725152425.GA24568@alpha.home.local> <42E542D5.3080905@gmx.net> <20050725200330.GA20811@harddisk-recovery.nl> <42E547CA.90108@gmx.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <42E547CA.90108@gmx.net> Organization: Harddisk-recovery.com User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jul 25, 2005 at 10:12:58PM +0200, Andreas Baer wrote: > Erik Mouw wrote: > >Easy: Drives don't have the same speed on all tracks. The platters are > >built-up from zones with different recording densities: zones near the > >center of the platters have a lower recording density and hence a lower > >datarate (less bits/second pass under the head). Zones at the outer > >diameter have a higher recording density and a higher datarate. > > So it has definitely nothing to do with filesystem? I also thought about > physical reasons because I don't think the hdparm depends on filesystems... That's right, hdparm doesn't care about filesystems. The speed difference is caused by the physical geometry of the drive. Erik -- +-- Erik Mouw -- www.harddisk-recovery.com -- +31 70 370 12 90 -- | Lab address: Delftechpark 26, 2628 XH, Delft, The Netherlands