Philippe Gerum wrote:
> Jan Kiszka wrote:
> > Hi,
> > I'm getting nmi alarms about latency being > 100 us on a dual P-III 1GHz
> > (with and without CONFIG_SMP) once I start the latency test tool. But
> > the must be false positive. Can someone comment on this trace:
> Issue confirmed here, on a dual 750 Mhz PIII Celeron. Starting the
> latency test, the NMI watchdog pulls the break on cpu #0 after a few us,
> albeit rthal_nmi_arm() had been told to trigger the NMI more than a
> millisecond in the future (likely the HTICK emulation + 100 us NMI
> Running a UP + LAPIC enabled kernel on the same hw did not trigger the
> spurious NMI, so I'd bet that the issue is SMP related, and not
> hw/perfctr related.
I never observe this on my dual PIII whereas I always have the NMI
watchdog option enabled. Are you running with or without the tracer ?
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