swap_pager: indefinite wait buffer

Brian McCann bjmccann at gmail.com
Mon Nov 12 08:06:16 PST 2007

Hi all.  I'm sure some of you have seen this, and I'm looking for some
advice.  I've got 2 servers now that will completely lockup (one is
6.1-p4, the other 6.2-p7), and just display this on the console:

swap_pager: indefinite wait buffer: bufobj: 0, blkno: 33, size: 4096

It repeats and continues to be frozen until I reboot the machine.  The
machine responds to ping, but that's about it.  On one of my boxes, it
appears to happen under heavy use (though this is not always the
case...it's done it on me before when it's been completely idle).
There should be no reason for either of these machines to swap...one
of them has 4GB of RAM, the other has 2GB, and they never come close
to using it all (based on our statistics).

I've seen the various comments that it's probably bad hardware, but I
haven't been able to find anything.  I also saw there was a reference
in the todo for 6.1 (http://www.freebsd.org/releases/6.1R/todo.html)
about this.  Anyone know if there has been any updates to this?

Anyone have any info that could help me out?


Brian McCann

"I don't have to take this abuse from you -- I've got hundreds of
people waiting to abuse me."
                -- Bill Murray, "Ghostbusters"

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