Date: Wed, 10 Oct 2001 00:30:34 -0700 From: Doug Barton <DougB@yahoo-inc.com> To: Mike Meyer <mwm@mired.org> Cc: hackers@FreeBSD.ORG Subject: Re: Debbuging hard lockups... Message-ID: <3BC3F91A.1492C252@yahoo-inc.com> References: <15297.57121.554185.659525@guru.mired.org>
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Mike Meyer wrote:
>
> I can generate hard lockups on my SMP box pretty easily. When locked,
> it fails to respond to anything - I can't even get into the kernel
> debugger to fire up. The lockups don't happen on UP machines under the
> same conditions, so I can't even see if console debugging would work,
> because I don't have a second SMP machine to run the kernel on.
>
> I'm running 4.4-stable, and I'm looking for suggestions on how to deal
> with this, other than "don't do that". Debugging kernel options, maybe?
How much ram do you have, and how long are you waiting? I find that it
sometimes takes several minutes to dump 256M.
HTH,
Doug
--
"We will not tire, we will not falter, and we will not fail."
- George W. Bush, President of the United States
September 20, 2001
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