On Wednesday, May 30, 2012 3:56:02 pm Mark Felder wrote: > On Wed, 30 May 2012 12:17:07 -0500, John Baldwin <j...@freebsd.org> wrote: > > > > > Humm, can you test it with 2 CPUs? > > > > We primarily only run with 1 CPU. We have seen it crash on multiple CPU > VMs. Also, Dane Foster appeared to have been using multiple CPUs in his > video transcoding VMs. > > Unfortunately I can't give you more information at the moment. I'm working > with Dane to compile easy to follow steps that recreate this failure. I > have not been successful in getting this to crash on demand in my > environment, but Dane has so we're trying to recreate his.
Ok. It would be really helpful if we could get a crashdump, though I realize that may not be doable. Otherwise, full DDB ps output from a hang would be a good start. Primarily I would want to see what the system is doing and why it isn't running the threads on the run queue. It might also be useful to add KTR_SCHED tracing so we can get the output of that via 'show ktr' from DDB when it hangs. -- John Baldwin _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
