swap_pager: indefinite wait

[Martin Schütte]

Sossi Andrej schrieb:
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 31, size: 4096
> 
> Can somebody help me understand why the system crashed this way or how
> to avoid future crash?

This happens when it takes more than 20 seconds to swap out a page 
(http://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/troubleshoot.html#INDEFINITE-WAIT-BUFFER).

I had the same problem some time ago with FreeBSD 6.0 when making 
Backups (so the disks were busy). For me it helped to increase the 
timeout from 20 to 40 seconds in vm/swap_pager.c 
(http://fxr.watson.org/fxr/source/vm/swap_pager.c?v=FREEBSD60#L1103)

-- 
Martin