Messages in this thread | | | From | "Stephen C. Tweedie" <> | Date | Tue, 6 Apr 1999 22:31:52 +0100 (BST) | Subject | Re: [patch] arca-vm-2.2.5 |
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Hi,
On Tue, 6 Apr 1999 15:04:36 +0200 (CEST), Andrea Arcangeli <andrea@e-mind.com> said:
> I also think that I'll implement the cookie thing suggested by Mark since > I am too much courious to see how much it will help (even if my mind is > driven by RB-trees ;).
Trees are bad for this sort of thing in general: they can be as fast as hashing for lookup, but are much slower for insert and delete operations. Insert and delete for the page cache _must_ be fast. Expanding a hash table does not cost enough to offset the performance problems.
--Stephen
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