> > Does it lock up solid and require a reset, or just
> > run slow?
>
> Locks up, doesn't even respond to ssh requests from
> another machine. Although
> sometimes 'locking up' and 'running really really
> really slow' are indistingushable :-)
You can try to enable "deadman panics", by adding
this to /etc/system and rebooting:
set snooping=1
With certain hangs (> 50 seconds of kernel clock code
inactivity) the kernel will automatically panic the machine
with a "deadman panic" and writes a crash dump, when
snooping is set:
http://docs.sun.com/app/docs/doc/817-5789/6ml7kh1eq?a=view
You can also try to run the system under kmdb control
(boot the kernel with option "-k"), and either use
the text console (don't start the X11 server) or
use a serial console (you can use X11). When the
system hangs, try to break into the kmdb debugger
("F1" + "a" on the text console, or a BREAK signal on
the serial console).
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