Re: RELENG 6.1/AMD64 system hangs when SMP enabled

In response to bram <bram@xxxxxxxxxxx>:

Hi all,

I'm rather new to freebsd so forgive me if I am saying things that don't
make sense.

I have a dual opteron server running freebsd 6.1/amd64 updated 4 weeks ago.

Since I moved to 6 I've been having tho following problem.

When I put heavy load on the server (python scripts that take 20 minutes
to complete) the server sometimes hangs.

I can then not ping it anymore and it does not respond to anything (no
keyboard power button etc.).
Mostly there are no error messages or anything so I have no clue to what
the problem is.
One time it did give an error but I did not wrote it down, but as I
recall it was something like SMP spin lock timed out.

It hangs every three weeks

Please give me some info on how I can get it to give more info or how to
resolve this problem.

I'm no expert, but this is probably where you'll need to start:
http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug-online-ddb.html

--
Bill Moran
Collaborative Fusion Inc.
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