[1432] in linux-scsi channel archive
Re: Feb12 release...
daemon@ATHENA.MIT.EDU (Daniel M. Eischen)
Sun Feb 16 23:26:11 1997
Date: Sun, 16 Feb 1997 22:16:29 -0600 (CST)
From: "Daniel M. Eischen" <deischen@iworks.InterWorks.org>
To: aic7xxx@freebsd.org, linux-scsi@vger.rutgers.edu, yuri@rgti.com
> My machine still locks solid when I run bonnie. Its strange, but
> I can 'dd' two of my drives into /dev/null with no adverse results,
> yet bonnie produces a guaranteed lockup. When I run with the
> aicxxx=verbose, I get a nice "Can't get a free page" and the a slew
> of timeout errors - none of this makes into the error log
> unfortunately.
>
> Whats even stranger is that the nice "buffer.c" patch - even though it
> approximately doubles the disk throughput ;))) - accelerates the machine's
> death under bonnie. (ie it keels over immediately after bonnie starts
> running)
>
> Substituting an NCR-825 based controller into the equation gets rid of
> the locksups. Ditto with a borrowed DPT 2044UW. (As a matter of fact
> I can run 2 bonnies in parallel.) This pretty much guarantees proper
> termination, etc. :(
Can you please post the aic7xxx-related messages from a verbose
boot?
Are you running with defaults, or have you enabled tagged queueing,
SCB paging, and what are the commands per LUN?
I can lock up the kernel/driver tight when I enable SCB paging and
set commands per LUN to 16. No messages are generated, it just locks
up tight - no keyboard input, no mouse control, etc - like interrupts
are disabled. I think something is getting stomped on, but I haven't
a clue as to what it is.
I haven't been able to lock the system with the default settings,
though.
Dan Eischen
deischen@iworks.InterWorks.org
