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Date:      Mon, 16 Nov 1998 11:13:56 +0100
From:      Ron Klinkien <root@zappa.demon.nl>
To:        Eric Hodel <hodeleri@seattleu.edu>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Adaptec SCSI messages
Message-ID:  <19981116111356.B5504@zappa.demon.nl>
In-Reply-To: <364FBA8D.DE31C778@seattleu.edu>; from Eric Hodel on Sun, Nov 15, 1998 at 09:39:25PM -0800
References:  <199811160525.WAA25664@panzer.plutotech.com> <364FBA8D.DE31C778@seattleu.edu>

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On Sun, Nov 15, 1998 at 09:39:25PM -0800, Eric Hodel wrote:
> 
> 
> "Kenneth D. Merry" wrote:
> <snip>
> > > changing root device to da0s1a
> > > da0 at ahc0 bus 0 target 6 lun 0
> > > da0: <QUANTUM VIKING II 4.5WLS 3506> Fixed Direct Access SCSI2 device
> > > da0: 40.0MB/s transfers (20.0MHz, offset 31, 16bit), Tagged Queueing Enabled
> > > da0: 4350MB (8910423 512 byte sectors: 255H 63S/T 554C)
> > 
> > Do you have this disk plugged into the Ultra2 port on the motherboard?  If
> > it is an Ultra 2 device, it should probbe at 40MHz.  (assuming you don't
> > have any non-Ultra2 peripherals on the Ultra 2 port)
> 
> You probably do have the HDD plugged into the SE instead of the LVD connection,
> I have the same controller/drive setup and it reports 80.0MB/s

Hmmm, I'll now have really a good reason to open the box again.
I allways had the feeling this system could be a bit faster with disk access..

I have experience with scsi being an Sun Sparc engineer and owned an Amiga,
but there are so many different scsi cables and  ports included with this
mainboard ;-)

I may have overlooked something.

> 
> <snip>
> > > It doens't seem to matter how long the scsi timeout is set in the kernel.
> > > The Quantum disk is an UltraWide2 type, and so is the onboard scsi controller
> > > (Asus P2BS mainboard.)
> > >
> > > Can I alter scsi driver or kernel parameters to get rid of this timeout delay?  > Maybe it has something to do with the hd firmware like with some other Quantum disks.
> > 
> > It may well be a firmware bug.  I don't think tuning any kernel parameters
> > will fix it.
> 
> You can set your kernel to have a shorter timeout delay.  I can't recall the
> exact option, check the LINT kernel.  On the boot floppy kernel its 15 seconds,
> and on the generic its 8 (I think) I adjusted it down to 4, and haven't had a
> problem.
> 

I had it configured at 4 seconds, the last kernel was build with 10 , it rebooted
ok then, but i think it was because of something else...


Thanks,

Ron.
 
 <snip>
> 
> Eric Hodel
> hodeleri@seattleu.edu
> 
> To Unsubscribe: send mail to majordomo@FreeBSD.org
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-- 

---
"You could jam in Joe's garage..." -FZ

Ron Klinkien			System Engineer
ron@zappa.demon.nl		http://www.zappa.demon.nl

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