newfs locks entire machine for 20seconds
freebsd at sopwith.solgatos.com
Wed Jan 30 17:49:19 PST 2008
> > What *exactly* do you mean by
> >> machine still locks up with no activity for anywhere from 20 to 30 seconds.
> > Is there disk activity? (e.g. activity light(s) flashing if you have them)
> Cant tell if there is disk activity its in a DC miles away ;)
> > Does top continue to update the screen during the 20-30 seconds?
> > I'm thinking that newfs has queued up a bunch of disk i/o, and other
> > disk i/o gets locked out, but activities that don't require any disk i/o
> > (like top, once it is up and running) could continue. Is that what is
> > happening?
> No all sessions totally freeze. I have top set to 1 second refreshes and
> the clock literally stops and then 20-30 seconds later continues.
> All sessions are via ssh not X if that's of interest.
> I could understand if IO to disk for other processes became slow but
> everything including things like top just stop which is quite odd and
Ok, new idea. Your disk activity is via the network, and your sessions
are via the network. Could it be that something network related is saturated?
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