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    SubjectRe: [patch] arca-vm-2.2.5

    On Wed, 7 Apr 1999 00:27:21 +0200 (CEST), Andrea Arcangeli
    <> said:

    > It's not so obvious to me. I sure agree that an O(n) insertion/deletion is
    > far too slow but a O(log(n)) for everything could be rasonable to me. And
    > trees don't worry about unluky hash behavior.

    Trees are O(log n) for insert/delete, with a high constant of
    proportionality (ie. there can be quite a lot of work to be done even
    for small log n). Trees also occupy more memory per node. Hashes are
    O(1) for insert and delete, and are a _fast_ O(1). The page cache needs
    fast insert and delete.


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