Snapshot problems

[Skylar Thompson]

On Sun, Jul 03, 2005 at 12:52:01PM +0200, Dag-Erling Smrgrav wrote:
> Skylar Thompson <skylar at cs.earlham.edu> writes:
> > No joy. The machine hung again yesterday afternoon, with the error
> > "kern.ipc.maxpipekva exceeded" repeated over and over again on the
> > console.
> 
> So you're using a lot of pipes - more than the kernel can handle with
> the default parameters.  What's your workload?  Do you run a lot of
> jails?  What is the current value of kern.ipc.maxpipekva?  Have you
> tried increasing it?

That's the weird thing. My workload is pretty typical. This is basically
being used as a main departmental server, doing web/mail/database/print
services. I don't think these services involve using a lot of pipes. I also
can't correlate the crashes with heavy service load; it's always correlated
with heavy disk I/O.

That said, upping kern.ipc.maxpipekva might be on the right track. The
machine lasted through both the database dumps and the filesystem dumps
last night.

-- 
-- Skylar Thompson (skylar at cs.earlham.edu)
-- http://www.cs.earlham.edu/~skylar/
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