Date: Wed, 29 Mar 2000 19:49:59 +0200 From: Dave Boers <djb@relativity.student.utwente.nl> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: Tommy Hallgren <thallgren@yahoo.com>, Jeremiah Gowdy <jgowdy@home.com>, bart@ixori.demon.nl, freebsd-smp@FreeBSD.ORG Subject: Re: SMP and vn Message-ID: <20000329194959.B11743@relativity.student.utwente.nl> In-Reply-To: <200003291604.IAA63016@apollo.backplane.com>; from dillon@apollo.backplane.com on Wed, Mar 29, 2000 at 08:04:12AM -0800 References: <20000327183911.18682.qmail@web124.yahoomail.com> <20000329132919.A10781@relativity.student.utwente.nl> <200003291604.IAA63016@apollo.backplane.com>
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It is rumoured that Matthew Dillon had the courage to say:
> I suspect you are getting a panic, but due to X running you can't
> see it. The goal should be to get to a DDB prompt on the console
> to be able to see the panic and 'trace' and 'ps', and then to
> (if possible) get a kernel core by typing 'panic' from the DDB prompt.
Obviously, getting into DDB is crucial here. However, I am not sure if I
recall an occasion on which the lockup occurred on the console. At the
moment I can't rule out that there is indeed a panic occurring on the
console, although I _think_ that the lockups are complete, i.e. no panic.
Since my uptime is still low, I'll recompile my kernel and throw
DDB_UNATTENDED out of my kernel config. I'll leave the system on the
console instead of in X whenever I leave the console and I'll just wait and
see what happens.
At the moment, through crosschecking with others, I've concluded that the
system hang is either triggered by a specific combination of kernel options
or by XFree86 version 3.3.6; and of course only on SMP systems. That is,
unless I'm overlooking something.
It'll take me some 5-7 days to get results (i.e. a crash); I'll keep you
all informed.
Regards,
Dave.
--
Dave Boers < djb @ ifa . au . dk >
Physics graduate student && unix/BSD sysadmin - University of Twente
Public key: ftp://relativity.student.utwente.nl/pub/pgpkeys/djb.asc
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