* John <[email protected]> wrote:
> > 2.6.18-rt7 is pretty old, do you see the problem in 2.6.20-rc6-rt5
> > too?
>
> Ingo, Thomas,
>
> I cannot reproduce in 2.6.20-rc6-rt6, but it is not strictly an
> apples-to-apples comparison because I get a tsc clocksource in
> 2.6.20-rc6-rt6, and an acpi_pm clocksource in 2.6.18.6-rt7.
that suggests that the TSC was not deemed reliable by the newer kernel -
which almost always means it's not realiable. I think the problems you
were seeing are consistent with TSC being non-monotonic - so the fix is
to not use the TSC - and the newer kernel does this automatically.
Ingo
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