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    SubjectRe: nohz and strange sleep latencies

    > > > but perhaps somehow we miss this fact and fail to turn off the lapic
    > > > clockevents drivers?
    > >
    > > Ok, I guess I'm lost. If I offline second CPU, I immediately get
    > > 1000Hz timer tick... is that expected?
    > Hmm. No. I have no idea why this is happening.
    > 34196 total events, 55.083 events/sec
    > echo 0 >/sys/devices/system/cpu/cpu1/online
    > 36073 total events, 54.679 events/sec

    It happened again, this time on 2.6.24-pre-rc1 (mostly untainted).
    Reboot and problem goes away... so this one is random :-(.

    I'll try plug/unplug loops, perhaps that can trigger it reliably. (cpu
    replug does not fix it once triggered).
    (cesky, pictures)
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      Last update: 2007-11-26 13:19    [W:0.020 / U:78.076 seconds]
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