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    SubjectRe: dynamic-hz
    On Mon, 13 Dec 2004, Andrea Arcangeli wrote:

    > Sure, desktop doesn't need this, the reason somebody is asking for it,
    > is that the desktop stuff hurted some other non-desktop usages. Infact
    > my 2.4 tree was setting by default HZ=1000 if 'desktop' paramter was
    > passed to the kernel (so that I could lower the timeslice accordingly
    > too, without losing the effect of the nicelevels between nice 0 and
    > +19).
    >
    > The other new case where I'm asked for this feature is again not the
    > desktop but the high end laptop with cpu throttling down to 80mhz, and
    > what Pavel mentioned about the lower consumption. Perhaps we could do
    > variable HZ there, though I doubt it has a pit that can be reprogrammed
    > with sane performance.

    Well most x86(64) these days have local APICs and that provides a
    relatively inexpensive one shot timer mode.

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