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Date:      Fri, 17 Nov 2000 12:55:28 +0100 (CET)
From:      Soren Schmidt <sos@freebsd.dk>
To:        sheldonh@uunet.co.za (Sheldon Hearn)
Cc:        bright@wintelcom.net (Alfred Perlstein), steve@virtual-voodoo.com (Steven E. Ames), bp@butya.kz (Boris Popov), valentin@valcho.net (Valentin Chopov), current@FreeBSD.ORG
Subject:   Re: CURRENT is freezing again ...
Message-ID:  <200011171155.MAA92493@freebsd.dk>
In-Reply-To: <2967.974461715@axl.fw.uunet.co.za> from Sheldon Hearn at "Nov 17, 2000 01:48:35 pm"

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It seems Sheldon Hearn wrote:
> > I would try a new kernel, and perhaps some collabaration with John
> > to debug these problems rather than just complaining about the
> > situation.  I see at least two experianced developers in the CC
> > list, there's no reason for these poor bug reports.
> 
> The problem with a hard lock-up out of which you can't escape into the
> debugger is that it makes meaningful bug reports impossible.  My non-SMP
> workstation has exhibited apparently arbitrary lock-ups since the advent
> of SMPng.
> 
> I thought I was the only one, since my question on the freebsd-current
> mailing list went unanswered.

You are _not_ alone, there has been numerous complains about this
on the list, but so far they have not been taken seriously :|

> >From my understanding, John's WITNESS code allows us to break into the
> debugger from within interrupt context.  If the lock-ups are happening
> in there, then this may help us provide better bug reports.

It doesn't help here at least, the machine(s) just lock up solid
only reset or a powercycle can bring them back...

> Oh, and a couple of deep breaths are probably in order. :-)

Yeah like *sigh* ....

-Søren


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