From owner-freebsd-current@FreeBSD.ORG Thu Mar 2 14:27:32 2006 Return-Path: X-Original-To: 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 3AD2216A420; Thu, 2 Mar 2006 14:27:32 +0000 (GMT) (envelope-from mi+kde@aldan.algebra.com) Received: from aldan.algebra.com (aldan.algebra.com [216.254.65.224]) by mx1.FreeBSD.org (Postfix) with ESMTP id AF04C43D46; Thu, 2 Mar 2006 14:27:31 +0000 (GMT) (envelope-from mi+kde@aldan.algebra.com) Received: from aldan.algebra.com (aldan [127.0.0.1]) by aldan.algebra.com (8.13.4/8.13.4) with ESMTP id k22ERQcP043272 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 2 Mar 2006 09:27:26 -0500 (EST) (envelope-from mi+kde@aldan.algebra.com) Received: from localhost (localhost [[UNIX: localhost]]) by aldan.algebra.com (8.13.4/8.13.4/Submit) id k22ERP9I043271; Thu, 2 Mar 2006 09:27:25 -0500 (EST) (envelope-from mi+kde@aldan.algebra.com) From: Mikhail Teterin To: Dmitry Pryanishnikov Date: Thu, 2 Mar 2006 09:27:24 -0500 User-Agent: KMail/1.8.2 References: <200603010505.k2155HfQ003205@aldan.algebra.com> <200603011634.19617.mi+mx@aldan.algebra.com> <20060302104004.E83093@atlantis.atlantis.dp.ua> In-Reply-To: <20060302104004.E83093@atlantis.atlantis.dp.ua> X-Face: %UW#n0|w>ydeGt/b@1-.UFP=K^~-:0f#O:D7whJ5G_<5143Bb3kOIs9XpX+"V+~$adGP:J|SLieM31VIhqXeLBli" X-Mailman-Approved-At: Thu, 02 Mar 2006 14:39:53 +0000 Cc: sos@freebsd.org, Julian Elischer , Brian Candler , current@freebsd.org Subject: Re: pitiful performance of an SATA150 drive X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 02 Mar 2006 14:27:32 -0000 On Thursday 02 March 2006 03:42 am, Dmitry Pryanishnikov wrote: = On Wed, 1 Mar 2006, Mikhail Teterin wrote: = > Let's not get distracted. dd using bs=1m is still limited to 7Mb/s on = > writing. = =    BTW, what CPU utilization numbers does "systat -vm" show during the = writing? In other words, is this issue (slow writing) CPU-bounded or = device-bounded? Device. There is very little CPU-load. The CPU is a dual-core Opteron @2.2MHz. -mi