From owner-freebsd-questions@FreeBSD.ORG  Tue Sep 30 21:38:27 2008
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 4AB12106568B;
	Tue, 30 Sep 2008 21:38:27 +0000 (UTC)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from wojtek.tensor.gdynia.pl (wojtek.tensor.gdynia.pl
	[IPv6:2001:4070:101:2::1])
	by mx1.freebsd.org (Postfix) with ESMTP id 0BE2F8FC22;
	Tue, 30 Sep 2008 21:38:25 +0000 (UTC)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from wojtek.tensor.gdynia.pl (localhost [IPv6:::1])
	by wojtek.tensor.gdynia.pl (8.14.2/8.14.2) with ESMTP id m8ULc8q5002030;
	Tue, 30 Sep 2008 23:38:08 +0200 (CEST)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from localhost (wojtek@localhost)
	by wojtek.tensor.gdynia.pl (8.14.2/8.14.2/Submit) with ESMTP id
	m8ULc7J9002027; Tue, 30 Sep 2008 23:38:07 +0200 (CEST)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Date: Tue, 30 Sep 2008 23:38:06 +0200 (CEST)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Jeremy Chadwick <koitsu@freebsd.org>
In-Reply-To: <20080930212028.GA56646@icarus.home.lan>
Message-ID: <20080930233708.G2014@wojtek.tensor.gdynia.pl>
References: <48E1465A.5040903@cs.okstate.edu>
	<20080930023736.GA22907@icarus.home.lan>
	<48E259B4.3040100@cs.okstate.edu>
	<200809301929.27126.fbsd.questions@rachie.is-a-geek.net>
	<20080930212028.GA56646@icarus.home.lan>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
Cc: Reid Linnemann <lreid@a.cs.okstate.edu>,
	Mel <fbsd.questions@rachie.is-a-geek.net>, freebsd-questions@freebsd.org
Subject: Re: SATA READ_DMA timeouts - SOLVED?
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 30 Sep 2008 21:38:27 -0000

> Some people have reported that when "UDMA33" is shown with SATA disks,
> that it's purely cosmetical -- that is to say, the actual transfer speed
> can exceed 33MByte/sec.  A series of "dd" tests reading/writing to the

yes it can, but it's much slower than native SATA, at least on system 
where i tested it. it gets near 60MB/s instead of 90