From owner-freebsd-current  Mon Dec  3  1:50:23 2001
Delivered-To: freebsd-current@freebsd.org
Received: from freebsd.dk (fw-rl0.freebsd.dk [212.242.86.114])
	by hub.freebsd.org (Postfix) with ESMTP
	id 23B6537B405; Mon,  3 Dec 2001 01:50:17 -0800 (PST)
Received: (from sos@localhost)
	by freebsd.dk (8.11.6/8.11.6) id fB39o2087766;
	Mon, 3 Dec 2001 10:50:02 +0100 (CET)
	(envelope-from sos)
From: Søren Schmidt <sos@freebsd.dk>
Message-Id: <200112030950.fB39o2087766@freebsd.dk>
Subject: Re: HEADSUP ATA support for newer SiS chipsets added
In-Reply-To: <20011203103056.B373@bsd.hu>
To: Miklos Niedermayer <mico@bsd.hu>
Date: Mon, 3 Dec 2001 10:50:02 +0100 (CET)
Cc: Greg Lehey <grog@FreeBSD.ORG>, current@FreeBSD.ORG
Reply-To: sos@freebsd.dk
X-Mailer: ELM [version 2.4ME+ PL94b (25)]
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain; charset=ISO-8859-1
Sender: owner-freebsd-current@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-current.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-current>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-current>
X-Loop: FreeBSD.ORG

It seems Miklos Niedermayer wrote:
> On Mon, Dec 03, 2001 at 09:28:26AM +0100, S_ren Schmidt wrote:
> 
> > > > No, I mean it exactly as written (X is the number of the disk to test).
> > > 
> > > Ah, you mean just do it 5 times?
> > 
> > Yeps, the idea here is that I want the drive to cache the data, so that
> > I can get the raw interface speed, that will show if the ATA modes
> > has been set correctly....
> 
> Does this work for you?
> I always get around 20 MB/sec on both ATA33 and ATA66/ATA100 systems...

Yes it does :

1+0 records in
1+0 records out
524288 bytes transferred in 0.037292 secs (14059037 bytes/sec)
1+0 records in
1+0 records out
524288 bytes transferred in 0.006199 secs (84576191 bytes/sec)
1+0 records in
1+0 records out
524288 bytes transferred in 0.006204 secs (84507936 bytes/sec)

But the disk needs to be idle or you risk getting another 
request inbetween ruining the cached data, or if you disk has
less cache that 512k it will also fail.

If that all is OK, you should see something close to the
real transfer speed of the interface, IF the ATA support
code has setup your HW correctly. What controller and disks
are we talking about here ?

-Søren

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-current" in the body of the message