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    SubjectRe: [patch-mm 00/25] High resolution timer updates and x86_64 support - V2
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    On Mon, 2007-06-18 at 16:06 -0400, Valdis.Kletnieks@vt.edu wrote:
    > On Sat, 16 Jun 2007 10:36:00 -0000, Thomas Gleixner said:
    > > The following patch series contains:
    > >
    > > - dyntick bugfixes for -mm (caused by the cpuidle changes in ACPI)
    > >
    > > - updates and improvements to high resolution timer / dynticks
    > >
    > > - high resolution timer / dynticks support for x86_64
    >
    > Am running with the 22-rc4-mm2-hrt4 patch on my Latitude D820. Mostly seems
    > to work, but for some reason the Intel 'powertop' util thinks it's 100% busy:
    >
    > PowerTOP version 1.7 (C) 2007 Intel Corporation
    >
    > Cn Avg residency (5s) P-states (frequencies)
    > C0 (cpu running) (100.0%)
    > C1 0.0ms ( 0.0%) 2.00 Ghz 0.0%
    > C2 0.0ms ( 0.0%) 1.67 Ghz 0.0%
    > C3 0.0ms ( 0.0%) 1333 Mhz 0.0%
    > 1000 Mhz 100.0%
    >
    > In reality:


    looks like something broke the /proc/acpi/processor/*/power file
    data....

    can you check in that file to see if there is actual C-state time
    accounting going on?
    (it is in mainline, so if it's not then it's an -mm or -hrt bug)

    --
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    Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org

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