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    SubjectRe: [PATCH] x86: Reduce the default HZ value
    On Thu, 7 May 2009 14:12:15 -0400 (EDT)
    Christoph Lameter <> wrote:

    > To get back to the main point: I agree with Alok that the default HZ needs
    > to be as low as possible. The remaining justification is the load
    > balancing and possible context switching between multiple tasks contenting
    > for a processor.
    > Is it enough if this occurs 100 times per second?

    I would like to see evidence that it is, and by evidence I don't mean
    "our virtual machine manager runs better" but good evidence that it isn't
    affecting performance of any games, applications, video suites etc -
    because we know it did in the past.

    Even then its pointlessly jumping up and down and changing stuff rather
    than fixing the real problem - which is jiffies.


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