From owner-freebsd-current@FreeBSD.ORG Wed May 31 15:07:00 2006 Return-Path: X-Original-To: freebsd-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 29E0B16B43A for ; Wed, 31 May 2006 15:07:00 +0000 (UTC) (envelope-from dan@dan.emsphone.com) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by mx1.FreeBSD.org (Postfix) with ESMTP id A6D8143D7B for ; Wed, 31 May 2006 15:06:53 +0000 (GMT) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.13.1/8.13.4) id k4VF6YK2039015; Wed, 31 May 2006 10:06:34 -0500 (CDT) (envelope-from dan) Date: Wed, 31 May 2006 10:06:34 -0500 From: Dan Nelson To: Rod Person Message-ID: <20060531150634.GD6982@dan.emsphone.com> References: <200605301914.41981.rodperson@adelphia.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200605301914.41981.rodperson@adelphia.net> X-OS: FreeBSD 5.5-PRERELEASE X-message-flag: Outlook Error User-Agent: Mutt/1.5.11 Cc: freebsd-current@freebsd.org Subject: Re: Current 7 U320 transfer rate only 3.300 MB/s 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: Wed, 31 May 2006 15:07:02 -0000 In the last episode (May 30), Rod Person said: > I have and LSI u320 SCSI controller on a TYAN Thunder K8WE board with > and nvidia4 chipset. My boot message displays the following > > da0 at mpt0 bus 0 target 0 lun 0 > da0 FIXED Direct Access SCSI-3 device > da0 3.300MB/s tranfers, Tagged Queueing Enabled > > Why is my transfer rate so low? Anyone have an idea how I can correct > this? That may just be a display bug. Does "diskinfo -t da0" report reasonable speeds? If not, check your bios to see if you are forcing a slow speed, or try running "camcontrol negotiate da0 -R 160" to force 320MB speeds (160 Mhz * 16 bit bus = 320MB). -- Dan Nelson dnelson@allantgroup.com