From owner-freebsd-current Tue Feb 22 9:15:16 2000 Delivered-To: freebsd-current@freebsd.org Received: from c62443-a.frmt1.sfba.home.com (c62443-a.frmt1.sfba.home.com [24.0.69.165]) by hub.freebsd.org (Postfix) with ESMTP id BCC0C37B724 for ; Tue, 22 Feb 2000 09:15:13 -0800 (PST) (envelope-from adsharma@c62443-a.frmt1.sfba.home.com) Received: (from adsharma@localhost) by c62443-a.frmt1.sfba.home.com (8.9.3/8.9.3) id JAA02243; Tue, 22 Feb 2000 09:15:10 -0800 Date: Tue, 22 Feb 2000 09:15:10 -0800 From: Arun Sharma To: Soren Schmidt Cc: freebsd-current@FreeBSD.ORG Subject: Re: ABIT BP6, UDMA-66 and wdc AC310200 Message-ID: <20000222091510.A2230@sharmas.dhs.org> References: <20000222023156.A1426@sharmas.dhs.org> <200002221054.LAA09790@freebsd.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.6i In-Reply-To: <200002221054.LAA09790@freebsd.dk>; from Soren Schmidt on Tue, Feb 22, 2000 at 11:54:40AM +0100 Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Tue, Feb 22, 2000 at 11:54:40AM +0100, Soren Schmidt wrote: > It seems Arun Sharma wrote: > > I have the above hardware combination and here's the dmesg from > > 4.0-current: > > > > atapci0: port 0xf000-0xf00f at device 7.1 on pci0 > > atapci1: port 0xb400-0xb4ff,0xb000-0xb003,0xac00-0xac07 irq 11 at device 19.0 on pci0 > > ata2: at 0xac00 on atapci1 > > atapci2: port 0xc000-0xc0ff,0xbc00-0xbc03,0xb800-0xb807 irq 11 at device 19.1 on pci0 > > ad4: 9787MB [19885/16/63] at ata2-master using UDMA33 > > > > How do I get my disk to work in UDMA66 mode ? Is it supported with for > > my disk ? > > > Do you have the prober 80pin cable ?? if so please provide a verbose boot... Thanks, that fixed the problem. Has anyone benchmarked the driver ? A very unscientific benchmark that I ran didn't seem to produce much of a difference between UDMA33 and UDMA66. In both cases, I got roughly 13 MB/s. # dd if=/dev/ad4s2 of=/dev/null bs=40960k count=10 10+0 records in 10+0 records out 419430400 bytes transferred in 30.797045 secs (13619177 bytes/sec) Can anyone point me to some benchmarks and comment about the improvement ? -Arun To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message