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    SubjectRe: Topic for discussion: OS Design
    Keith Owens <kaos@ocs.com.au>:
    >
    > On Thu, 26 Oct 2000 09:17:49 -0400 (EDT),
    > "Richard B. Johnson" <root@chaos.analogic.com> wrote:
    [snip]
    > >This shows that out of 34,678 bytes we needed, we wasted 6282, ~1.5
    > >pages. Since there are 5 modules, we waste about 1/3 page per module.
    > >
    > >So I don't, as you say; "... waste 1/2 page or more per module".
    >
    > Statistics say that the average loss will be 1/2 page per module. Some
    > will waste more, some will waste less, average is 1/2 the unit.

    Only if the size of a random module can be between 0 and a full page....

    Module sizes are skewed data... there is a minimum size for a module
    (somewhere around 1k, I believe - didn't measure it), and if the module
    is going to DO anything then it will be between 1-2K. This skews the data
    sample such that you are only loosing 1/2 of (1 page - minimum) or 1/2 of
    3K = 1.5K. Hence the 1/3 measured loss will be closer to the correct
    theoretical loss than 1/2.

    -------------------------------------------------------------------------
    Jesse I Pollard, II
    Email: pollard@navo.hpc.mil

    Any opinions expressed are solely my own.
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