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    SubjectRe: System time drifts when processor idle.
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    On Fri, 2010-08-27 at 16:12 +0200, jean-philippe francois wrote:
    > My Timekeeping bug is still present, here is an updated script and log.
    > I am willing to make test, but I don't know what kind of debugging
    > info is needed.
    >
    > cat /sys/devices/system/clocksource/clocksource0/available_clocksource
    > hpet acpi_pm
    > cat /sys/devices/system/clocksource/clocksource0/current_clocksource
    > hpet

    Huh. hpet was not what I would have expected.


    So first, two experiments:

    1) Does booting with "clock=acpi_pm" cause the issue to disappear?

    2) Does booting with "nohz=off" cause the issue to disappear?


    Venkatesh: You have any experience with HPETs that halt in idle?

    thanks
    -john




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