From owner-freebsd-stable Sat Apr 18 13:21:36 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id NAA21755 for freebsd-stable-outgoing; Sat, 18 Apr 1998 13:21:36 -0700 (PDT) (envelope-from owner-freebsd-stable@FreeBSD.ORG) Received: from localhost.ca (root@dial113.bc1.com [207.34.139.113]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id UAA21717; Sat, 18 Apr 1998 20:21:30 GMT (envelope-from jake@localhost.ca.freebsd.org) Received: from localhost.ca (jake@localhost.ca [127.0.0.1]) by localhost.ca (8.8.8/8.8.8) with ESMTP id NAA00837; Sat, 18 Apr 1998 13:25:20 -0700 (PDT) (envelope-from jake@localhost.ca) Message-Id: <199804182025.NAA00837@localhost.ca> X-Mailer: exmh version 1.6.9 8/22/96 To: hardware@FreeBSD.ORG cc: stable@FreeBSD.ORG Subject: Re: best wdc0 flags ? In-reply-to: Your message of "Sat, 18 Apr 1998 09:45:53 PDT." <199804181645.JAA04953@antipodes.cdrom.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Sat, 18 Apr 1998 13:25:19 -0700 From: Jake Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk > I'd generally use 0x80ff80ff and let the autodetection code sort it out I get IOZONE performance measurements: 5144042 bytes/second for writing the file 5756362 bytes/second for reading the file with this flag on a Western Digital AC22500. It increased the dd if=/dev/wd0 of=/dev/null throughput from ~3 mb/s with no flags to ~4 mb/s. -- http://www.checker.org/~jake To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message