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    SubjectRe: [RFC][PATCH] HZ as a config option
    Alan Cox wrote:
    > On Fri, 2002-10-04 at 23:53, Dave Hansen wrote:
    >
    >>On large systems (like NUMA-Q, Intel Profusion, etc...), latency and
    >>user responsiveness become much less important. The extra scheduling
    >>overhead caused by higher HZ is bad.
    >>
    >>This is x86-only right now. Is there any wider desire to tune this at
    >>config time? Do any architecutures have strict rules as to what this
    >>can be set to?
    >
    > You can't set this arbitarily, the NTP PLL's will only lock for certain
    > value ranges.

    Where can I find these ranges? include/linux/timex.h only errors if
    the number is out of the 12-1535 range.

    --
    Dave Hansen
    haveblue@us.ibm.com

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