From owner-freebsd-current@FreeBSD.ORG  Mon Oct 18 19:11:48 2004
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 2C3AF16A4CE
	for <freebsd-current@freebsd.org>;
	Mon, 18 Oct 2004 19:11:48 +0000 (GMT)
Received: from avscan2.sentex.ca (avscan2.sentex.ca [199.212.134.19])
	by mx1.FreeBSD.org (Postfix) with ESMTP id C855F43D2F
	for <freebsd-current@freebsd.org>;
	Mon, 18 Oct 2004 19:11:47 +0000 (GMT)	(envelope-from mike@sentex.net)
Received: from localhost (localhost.sentex.ca [127.0.0.1])
	by avscan2.sentex.ca (8.12.11/8.12.11) with ESMTP id i9IJBkqa090705;
	Mon, 18 Oct 2004 15:11:46 -0400 (EDT)
	(envelope-from mike@sentex.net)
Received: from avscan2.sentex.ca ([127.0.0.1])
 by localhost (avscan2.sentex.ca [127.0.0.1]) (amavisd-new, port 10024)
 with LMTP id 90191-07; Mon, 18 Oct 2004 15:11:46 -0400 (EDT)
Received: from lava.sentex.ca (pyroxene.sentex.ca [199.212.134.18])
	by avscan2.sentex.ca (8.12.11/8.12.11) with ESMTP id i9IJBkHM090667;
	Mon, 18 Oct 2004 15:11:46 -0400 (EDT)
	(envelope-from mike@sentex.net)
Received: from simian.sentex.net (simeon.sentex.ca [192.168.43.27])
	by lava.sentex.ca (8.12.11/8.12.11) with ESMTP id i9IJBcgm062722;
	Mon, 18 Oct 2004 15:11:39 -0400 (EDT)
	(envelope-from mike@sentex.net)
Message-Id: <6.1.2.0.0.20041018151602.0543e2a8@64.7.153.2>
X-Sender: mdtpop@64.7.153.2 (Unverified)
X-Mailer: QUALCOMM Windows Eudora Version 6.1.2.0
Date: Mon, 18 Oct 2004 15:17:38 -0400
To: Julian Elischer <julian@elischer.org>
From: Mike Tancsa <mike@sentex.net>
In-Reply-To: <41741449.5080900@elischer.org>
References: <20041015190638.C5A0E5D04@ptavv.es.net>
 <41715E7F.7060509@ng.fadesa.es>
 <20041018100045.f8koww0skcco0woo@www.sweetdreamsracing.biz>
 <4173D66F.6010200@DeepCore.dk>
 <17120aa104101808381cc59152@mail.gmail.com>
 <41741449.5080900@elischer.org>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"; format=flowed
X-Virus-Scanned: by amavisd-new
X-Virus-Scanned: by amavisd-new at avscan2b
cc: freebsd-current@freebsd.org
Subject: Re: FreeBSD 5.3b7and poor ata performance
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 18 Oct 2004 19:11:48 -0000

At 03:06 PM 18/10/2004, Julian Elischer wrote:
>what are perfomrances when you don't go thrrough the filesystem?
>
>how fast is:
>dd if=/dev/ad0 of=/dev/null bs=128k count=10000

Just as a point of reference, on a 915 board with
915# atacontrol list
ATA channel 0:
     Master:      no device present
     Slave:       no device present
ATA channel 1:
     Master:  ad2 <ST3120026AS/3.18> Serial ATA v1.0
     Slave:       no device present

915# dd if=/dev/ad2 of=/dev/null bs=128k count=10000
10000+0 records in
10000+0 records out
1310720000 bytes transferred in 22.493172 secs (58271906 bytes/sec)
915#

915# uname -a
FreeBSD 915.sentex.ca 5.3-STABLE FreeBSD 5.3-STABLE #1: Mon Oct 18 10:08:54 
EDT 2004     mdtancsa@915.sentex.ca:/usr/obj/usr/src/sys/915  i386
915#