Re: Current 7 U320 transfer rate only 3.300 MB/s

From: Scott Long <scottl_at_samsco.org>
Date: Wed, 31 May 2006 10:15:34 -0600
JoaoBR wrote:
> 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 = 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
> 
> Joćo
> 
> 

Different bug.

Scott
Received on Wed May 31 2006 - 14:16:01 UTC

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