Date: Wed, 31 May 2006 10:06:34 -0500 From: Dan Nelson <dnelson@allantgroup.com> To: Rod Person <rodperson@adelphia.net> Cc: freebsd-current@freebsd.org Subject: Re: Current 7 U320 transfer rate only 3.300 MB/s Message-ID: <20060531150634.GD6982@dan.emsphone.com> In-Reply-To: <200605301914.41981.rodperson@adelphia.net> References: <200605301914.41981.rodperson@adelphia.net>
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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 <FUJITSU MAP3735NP 5605> 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
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