From owner-freebsd-stable@FreeBSD.ORG Mon Jan 25 14:46:45 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B17E0106568F for ; Mon, 25 Jan 2010 14:46:45 +0000 (UTC) (envelope-from mavbsd@gmail.com) Received: from mail-fx0-f226.google.com (mail-fx0-f226.google.com [209.85.220.226]) by mx1.freebsd.org (Postfix) with ESMTP id 419268FC17 for ; Mon, 25 Jan 2010 14:46:44 +0000 (UTC) Received: by fxm26 with SMTP id 26so1086725fxm.13 for ; Mon, 25 Jan 2010 06:46:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:message-id:date:from :user-agent:mime-version:to:cc:subject:references:in-reply-to :content-type:content-transfer-encoding; bh=nir4Q9WO3Z2F+5d+vK4+7LUVE0NGLCZ27GUnPKxoDYw=; b=IV0jBI23uZ3M0L0UrTl8p/VioIGmu207bw9b1VGN5mSkYQ7ctfWQJ/N6faNPtUurSo elCuo2hrsrI1xK6mWKXDsjil6Ycp04OkGPgHFO6KP3+RMvw+CY8moCwI5Ft7gyjvXB16 6oV2Atpj9uUOny5sQ5V10Suoi+ua/KOQWIiAU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=o/LJKaj0yBuUG1EratPm85I4ozAzakxAoEnt4KovdbuOfJOYzr7ia421qcd5etPLI7 XWIdEpEMw8ik2Lyg85FiQ8aBAH0UuBMG10QoIVHOrJscIB0LOo5qvEFz0RwyAA6jOTqT eLkDpQw3CxOTZZGAkcpEFoq28Ob0nNy3/oCco= Received: by 10.223.14.140 with SMTP id g12mr6984384faa.50.1264430804150; Mon, 25 Jan 2010 06:46:44 -0800 (PST) Received: from mavbook.mavhome.dp.ua (pc.mavhome.dp.ua [212.86.226.226]) by mx.google.com with ESMTPS id 13sm2733621fxm.5.2010.01.25.06.46.42 (version=SSLv3 cipher=RC4-MD5); Mon, 25 Jan 2010 06:46:43 -0800 (PST) Sender: Alexander Motin Message-ID: <4B5DAED0.4060704@FreeBSD.org> Date: Mon, 25 Jan 2010 16:46:40 +0200 From: Alexander Motin User-Agent: Thunderbird 2.0.0.23 (X11/20091212) MIME-Version: 1.0 To: =?ISO-8859-1?Q?Kristian_Kr=E6mmer_Nielsen?= References: <1264378988.00211131.1264368602@10.7.7.3> In-Reply-To: <1264378988.00211131.1264368602@10.7.7.3> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Cc: freebsd-stable@freebsd.org Subject: Re: ata driver downgrades transfer speed for Intel ICH5 SATA150 in RELENG_8 ? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Jan 2010 14:46:45 -0000 Kristian Krĉmmer Nielsen wrote: > I just updated my kernel from RELEASE_8_0 to RELENG_8 and by rutine I > compare my dmesg -a output to make sure everything still works as expected. > > I notices that the ata-driver suddently downgraded the speed of my Intel > ICH5 SATS150 from SATA150 til UDMA133 - and I am not allowed to change > it manually by using atacontrol. > > Can this have something to do with the recent rewrite of ata-sata.c ? > http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/ata/ata-sata.c.diff?r1=1.6.2.2;r2=1.6.2.3 > > Here is the dmesg output compared with RELEASE_8_0 to RELENG_8: > > ...cut out... > atapci1: port > 0xec00-0xec07,0xe800-0xe803,0xe400-0xe407,0xe000-0xe003,0xdc00-0xdc0f > irq 18 at device 31.2 on pci0 > ...cut out... > -ad4: 305245MB at ata2-master SATA150 > +ad4: 305245MB at ata2-master UDMA133 > ...cut out... > -ad6: 305245MB at ata3-master SATA150 > +ad6: 305245MB at ata3-master UDMA133 It is only a cosmetic difference. There is no performance degradation. The reason of this, in inability of the controller driver to get SATA connection speed from this hardware. -- Alexander Motin