From owner-freebsd-performance@FreeBSD.ORG Fri Apr 18 06:44:34 2003 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 2CA5737B401; Fri, 18 Apr 2003 06:44:34 -0700 (PDT) Received: from sabre.velocet.net (sabre.velocet.net [216.138.209.205]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9BCEF43FD7; Fri, 18 Apr 2003 06:44:33 -0700 (PDT) (envelope-from dgilbert@velocet.ca) Received: from trooper.velocet.ca (trooper.velocet.net [216.138.242.2]) by sabre.velocet.net (Postfix) with ESMTP id BC67713850F; Fri, 18 Apr 2003 09:44:32 -0400 (EDT) Received: by trooper.velocet.ca (Postfix, from userid 66) id 50A2474A74; Fri, 18 Apr 2003 09:44:32 -0400 (EDT) Received: by canoe.velocet.net (Postfix, from userid 101) id 55D1156762E; Fri, 18 Apr 2003 09:44:28 -0400 (EDT) From: David Gilbert MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <16032.316.217010.480864@canoe.velocet.net> Date: Fri, 18 Apr 2003 09:44:28 -0400 To: argo In-Reply-To: <1050669889.575.12.camel@station.purk.ee> References: <1050669889.575.12.camel@station.purk.ee> X-Mailer: VM 7.07 under 21.1 (patch 14) "Cuyahoga Valley" XEmacs Lucid cc: aic7xxx@freebsd.org cc: freebsd-performance@freebsd.org Subject: aic7892 trouble X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Apr 2003 13:44:34 -0000 >>>>> "argo" == argo writes: argo> Hi folks, I have Adaptec U160 Host-Adapter with 2x Atlas 10k argo> disks.When i copy large files (~700MB) then performance is argo> pretty bad.I got only about 35MB/sec between those 2 argo> disks.Theres no difference 4.x or 5 -current. I made couple of argo> custom kernels with different options but no luck. Could that argo> be related with bad cable issue? That's about expected thruput for 18G 10k disks. If you buy 36G 10k disks, you'll likely get 70-ish meg/s ... +- how good your PCI bus is. Dave. -- ============================================================================ |David Gilbert, Velocet Communications. | Two things can only be | |Mail: dgilbert@velocet.net | equal if and only if they | |http://daveg.ca | are precisely opposite. | =========================================================GLO================