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From: JoaoBR <joao@matik.com.br>
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Date: Wed, 31 May 2006 13:11:37 -0300
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Cc: Rod Person <rodperson@adelphia.net>, Dan Nelson <dnelson@allantgroup.com>
Subject: Re: Current 7 U320 transfer rate only 3.300 MB/s
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On Wednesday 31 May 2006 12:06, Dan Nelson wrote:
> 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 =3D 320MB).


on releng_6 this is the same problem with atapicam

cd0 at ata1 bus 0 target 0 lun 0
cd0: <HL-DT-ST CD-RW GCE-8527B 1.02> Removable CD-ROM SCSI-0 device
cd0: 3.300MB/s transfers


but seems to work as usual

Jo=E3o







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