From owner-freebsd-hackers Tue Nov 10 23:01:06 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id XAA10959 for freebsd-hackers-outgoing; Tue, 10 Nov 1998 23:01:06 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from bugs.us.dell.com (bugs.us.dell.com [143.166.169.147]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id XAA10941 for ; Tue, 10 Nov 1998 23:01:03 -0800 (PST) (envelope-from tony@dell.com) Received: from ant (ant.us.dell.com [143.166.12.34]) by bugs.us.dell.com (8.8.8/8.8.8) with SMTP id AAA09797; Wed, 11 Nov 1998 00:25:44 -0600 (CST) (envelope-from tony@dell.com) Message-Id: <3.0.3.32.19981111002542.00752be4@bugs.us.dell.com> X-Sender: tony@bugs.us.dell.com X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.3 (32) Date: Wed, 11 Nov 1998 00:25:42 -0600 To: Terry Lambert From: Tony Overfield Subject: disk sector ordering (Was: Reading/writing /usr/ports is VERY slow) Cc: hackers@FreeBSD.ORG Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, 3 Sep 1998 01:08:15 +0000 (GMT), Terry Lambert said: >Specifically, most modern disks record tracks in reverse sector >order, and as soon as you seek to the track, they start reading >(and buffering data) until they hit the sector in the track that >you were actually seeking to find. Sorry about taking the side-track with such an old message, but I've been trying to figure out what you said here and I just don't get it. Can you explain this? Is there some reason you want to avoid the concurrency you normally achieve by having the sectors in the normal order? - Tony To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message