From owner-freebsd-current Tue Nov 14 00:23:05 1995 Return-Path: owner-current Received: (from root@localhost) by freefall.freebsd.org (8.6.12/8.6.6) id AAA09273 for current-outgoing; Tue, 14 Nov 1995 00:23:05 -0800 Received: from Root.COM (implode.Root.COM [198.145.90.17]) by freefall.freebsd.org (8.6.12/8.6.6) with ESMTP id AAA09241 for ; Tue, 14 Nov 1995 00:22:51 -0800 Received: from corbin.Root.COM (corbin [198.145.90.50]) by Root.COM (8.6.12/8.6.5) with ESMTP id AAA28042; Tue, 14 Nov 1995 00:22:47 -0800 Received: from localhost (localhost [127.0.0.1]) by corbin.Root.COM (8.6.12/8.6.5) with SMTP id AAA00179; Tue, 14 Nov 1995 00:22:43 -0800 Message-Id: <199511140822.AAA00179@corbin.Root.COM> To: Poul-Henning Kamp cc: current@freebsd.org In-reply-to: Your message of "Tue, 14 Nov 95 09:17:43 +0100." <173.816337063@critter.tfs.com> From: David Greenman Reply-To: davidg@Root.COM Date: Tue, 14 Nov 1995 00:22:43 -0800 Sender: owner-current@freebsd.org Precedence: bulk >> Attached is the patch to disable disk block sorting. It's interesting - >> I've been doing some tests here with disksort disabled and I'm actually seein > >Another thing we should >seriously< consider is to make the update do 10% >of the job every 3 seconds rather than 100% every 30 seconds. Been there, done that. It results in a large increase in the amount of disk I/O due to the way that delayed writes work and file access times are updated. "Fixing" this is very difficult and would require a rewrite of the code involved. -DG