From owner-freebsd-hardware@FreeBSD.ORG Fri Oct 28 16:45:48 2005 Return-Path: X-Original-To: hardware@freebsd.org Delivered-To: freebsd-hardware@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3FB2816A41F; Fri, 28 Oct 2005 16:45:48 +0000 (GMT) (envelope-from mi+mx@aldan.algebra.com) Received: from blue.virtual-estates.net (aldan.algebra.com [216.254.65.224]) by mx1.FreeBSD.org (Postfix) with ESMTP id 323BE43D45; Fri, 28 Oct 2005 16:45:46 +0000 (GMT) (envelope-from mi+mx@aldan.algebra.com) Received: from corbulon.video-collage.com (static-151-204-231-237.bos.east.verizon.net [151.204.231.237]) by blue.virtual-estates.net (8.13.4/8.13.4) with ESMTP id j9SGjgPW074130 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 28 Oct 2005 12:45:45 -0400 (EDT) (envelope-from mi+mx@aldan.algebra.com) Received: from mteterin.us.murex.com (195-11.customer.cloud9.net [168.100.195.11]) by corbulon.video-collage.com (8.13.4/8.13.1) with ESMTP id j9SGjaho003308 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 28 Oct 2005 12:45:36 -0400 (EDT) (envelope-from mi+mx@aldan.algebra.com) Received: from mteterin.us.murex.com (mteterin@localhost [127.0.0.1]) by mteterin.us.murex.com (8.13.3/8.13.3) with ESMTP id j9SGjUg4015645; Fri, 28 Oct 2005 12:45:30 -0400 (EDT) (envelope-from mi+mx@aldan.algebra.com) Received: from localhost (localhost [[UNIX: localhost]]) by mteterin.us.murex.com (8.13.3/8.13.3/Submit) id j9SGjSwY015644; Fri, 28 Oct 2005 12:45:28 -0400 (EDT) (envelope-from mi+mx@aldan.algebra.com) X-Authentication-Warning: mteterin.us.murex.com: mteterin set sender to mi+mx@aldan.algebra.com using -f From: Mikhail Teterin Organization: Virtual Estates, Inc. To: Peter Jeremy Date: Fri, 28 Oct 2005 12:45:27 -0400 User-Agent: KMail/1.8.2 References: <200510280518.j9S5I3oQ025430@blue.virtual-estates.net> <20051028094844.GU39882@cirb503493.alcatel.com.au> In-Reply-To: <20051028094844.GU39882@cirb503493.alcatel.com.au> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8bit Content-Disposition: inline Message-Id: <200510281245.28314.mi+mx@aldan.algebra.com> X-Virus-Scanned: ClamAV devel-20050525/1149/Thu Oct 27 16:20:09 2005 on corbulon.video-collage.com X-Virus-Status: Clean X-Scanned-By: MIMEDefang 2.43 Cc: hackers@freebsd.org, hardware@freebsd.org, sos@freebsd.org Subject: Re: Very slow writing to SATA disk X-BeenThere: freebsd-hardware@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: General discussion of FreeBSD hardware List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 28 Oct 2005 16:45:48 -0000 > If this drive doesn't support tagged-queueing, is the write cache > disabled?  I get that sort of performance from a (PATA) disk with > the cache disabled (hw.ata.wc="0" in loader.conf) No, just checked -- the hw.ata.wc is set to 1. Is there anything else to look at? > >According to smartctl, the drive runs at 56C during the copying. Its > >idle temperature seems to be 54C. > I'd double-check that (eg with a finger).  If the drive really is > running at 56°C, it won't last very long. It sure feels hot to the touch, but nothing is burning, of course (freshly poured tee is near 100C and never ignites the paper cup). Do you think, the high temperature explains the poor write performance? The drive still reads at tens of Mb per second... According to http://www.spacecentersystems.com/catalog/product_info.php/products_id/293088 this model's 'Ambient Temperature' spec is 5 to 55C... I'd like to be able to turn the drive off between backups, but sysutils/ataidle is broken on 6.0 (Soren?). Thanks! -mi