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    SubjectRe: Power consumption HZ100, HZ250, HZ1000: new numbers
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    On Mon, 2005-08-01 at 00:36 +0200, Pavel Machek wrote:
    > Hi!
    >
    > > > > I really like having 250HZ as an _option_, but what I don't see is why
    > > > > it should be the _default_. I believe this is Lee's position as
    > > > > Last I checked, ACPI and CPU speed scaling were not enabled by default;
    > > >
    > > > Kernel defaults are irelevant; distros change them anyway. [But we
    > > > probably want to enable ACPI and cpufreq by default, because that
    > > > matches what 99% of users will use.]
    > > >
    > >
    > > If the kernel defaults are irrelevant, then it would make more sense to
    > > leave the default HZ as 1000 and not to enable the cpufreq and ACPI in
    > > order to keep with the principle of least surprise for people who do use
    > > kernel.org kernels.
    >
    > Well, I'd say you want ACPI enabled. New machine do not even boot
    > without that. Default config should be usefull; set ACPI off, and
    > you'll not be able to even power machine down.

    While it's good to be future proof, I don't think it's valid to assume
    that new kernels usually run on new hardware.

    Lee

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