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    SubjectRe: 2.5.62-mjb3 (scalability / NUMA patchset)
    On Wed, 2003-02-26 at 15:05, Martin J. Bligh wrote: 
    > >> > I turned on NMI watchdogs and when the system hung, I saw no output.
    > >> > My serial console is through a terminal server that isn't set up to
    > >> > pass along the sysrq, so I need to get this fixed. In any case I
    > >> > backed out the patch that you suggested and I have had no system hangs
    > >> > since.
    > >>
    > >> OK, I'll back out that patch for now, but it seems to indicate underlying
    > >> crud. What parameter did you set for NMI watchdog?
    > >
    > > I set it to 1. In Documentation/nmi_watchdog.txt this looked like the
    > > only option. Now that I look at apic.h, I see that I could set it to 2
    > > also. If you like I can try this also.
    > 2 is what we used sucessfully last time, but I can't remember the
    > difference off the top of my head ... if you could try that, would be most
    > useful.

    Still no luck getting a stack trace. With nmi_watchdog=2, I get these
    kind of messages on occasion:

    Uhhuh. NMI received for unknown reason 35 on CPU 11.
    Dazed and confused, but trying to continue
    Do you have a strange power saving mode enabled?

    But when the system finally froze, there was nothing.



    Mark Haverkamp <>

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