From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262726AbTDNDfR (for ); Sun, 13 Apr 2003 23:35:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262728AbTDNDfR (for ); Sun, 13 Apr 2003 23:35:17 -0400 Received: from siaag1ad.compuserve.com ([149.174.40.6]:16626 "EHLO siaag1ad.compuserve.com") by vger.kernel.org with ESMTP id S262726AbTDNDfQ (for ); Sun, 13 Apr 2003 23:35:16 -0400 Date: Sun, 13 Apr 2003 23:44:51 -0400 From: Chuck Ebbert <76306.1226@compuserve.com> Subject: Re: Benefits from computing physical IDE disk geometry? To: Alan Cox Cc: linux-kernel Message-ID: <200304132346_MC3-1-3441-4D4C@compuserve.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Alan Cox wrote: > You couldn't even tell where such boundaries exist, or what the real > block size of the underlying media is. Cyliners are all different sizes. Found this by accident while skimming a new book; haven't visited yet but it may be of interest: A technical report describing Skippy and two other disk drive microbenchmarks (run in seconds or minutes rather than hours or days) is at http://sunsite.berkeley.edu/ Dienst/UI/2.0/Describe/ncstrl.ucb/CSD-99-1063 (Hennessey & Patterson 3rd ed., Ch.7, exercise 5.) -- "Let's fight till six, and then have dinner," said Tweedledum. --Lewis Carroll, _Through the Looking Glass_