Re: Poor SCSI drive performance on SMP machine, 2.2.16

["paradox3" <paradox3@maine.rr.com>]

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Here is the output from dmesg. How do I tell if it is improperly terminated?

Thanks, Para-dox (paradox3@maine.rr.com)




----- Original Message -----
From: "Michael Brown" <flight666@hotmail.com>
To: <paradox3@maine.rr.com>
Sent: Sunday, January 28, 2001 11:12 PM
Subject: Re: Poor SCSI drive performance on SMP machine, 2.2.16


> Your problem appears to be improper SCSI termination.
>
> You need to either
>   1) make sure your SCSI drive has termination enabled
> or
>   2) move your SCSI drive to the middle connector and put a terminator on
> the last connector
>
> Check your syslog and post to l-k the part where it detects your drives.
> I'll bet the adapter is throttling back quite dramatically in the presence
> of improper termination.
>
> --
> Michael Brown
>
> _________________________________________________________________
> Get your FREE download of MSN Explorer at http://explorer.msn.com
>
>

[-- Attachment #2: dmesg.txt --]
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(scsi0) <Adaptec AIC-7890/1 Ultra2 SCSI host adapter> found at PCI 0/12/0
(scsi0) Wide Channel, SCSI ID=7, 32/255 SCBs
(scsi0) Downloading sequencer code... 392 instructions downloaded
scsi0 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.1.31/3.2.4
       <Adaptec AIC-7890/1 Ultra2 SCSI host adapter>
scsi : 1 host.
(scsi0:0:0:0) Synchronous at 40.0 Mbyte/sec, offset 15.
  Vendor: IBM       Model: DGHS09U           Rev: 0350
  Type:   Direct-Access                      ANSI SCSI revision: 03
Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
scsi : detected 1 SCSI disk total.
SCSI device sda: hdwr sector= 512 bytes. Sectors= 17916240 [8748 MB] [8.7 GB]
Partition check:
 sda: sda1 sda2 sda3