From owner-freebsd-hackers Fri Mar 21 03:14:32 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id DAA09916 for hackers-outgoing; Fri, 21 Mar 1997 03:14:32 -0800 (PST) Received: from palrel1.hp.com (palrel1.hp.com [15.253.72.10]) by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id DAA09905 for ; Fri, 21 Mar 1997 03:14:07 -0800 (PST) Received: from fakir.india.hp.com (fakir.india.hp.com [15.10.40.3]) by palrel1.hp.com with ESMTP (8.7.5/8.7.3) id DAA24312 for ; Fri, 21 Mar 1997 03:14:00 -0800 (PST) Received: from localhost by fakir.india.hp.com with SMTP (1.37.109.20/15.5+ECS 3.3) id AA094094658; Fri, 21 Mar 1997 16:44:18 +0500 Message-Id: <199703211144.AA094094658@fakir.india.hp.com> To: freebsd-hackers@freebsd.org Subject: SDDISKSORT Date: Fri, 21 Mar 1997 16:44:18 +0500 From: "A JOSEPH KOSHY" Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk I noticed that by default we never turn on disk sorting for SCSI drives. What would be the reason for doing so. I understand that if a drive supports command queueing then presorting the request list may not be effective. However not all hardware support command queueing. Is not sorting the disk I/Os beneficial for all SCSI drives? Koshy My Personal Opinions Only