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Subject: Re: best performance from rehashing schemes?

Author: Dann Corbit

Date: 12:29:12 12/13/01

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On December 13, 2001 at 06:07:37, Wylie Garvin wrote:

>Hello,
>
>  Does anyone know what the best-performing rehashing scheme is?  I read
>somewhere (Heinz) that multiple probes in one table perform better than separate
>tables.  I've also heard that subtree size is best for choosing a node to
>overwrite.  What does the board think?
>

I have an idea which I have never tried, but it seems it might have merit.

For chaining, use a list of hash tables, which decrease in size exponentially.
So, if the first is 64 megs, then the next might be 130K, and a 3rd of only 512
bytes.  Or something like that.




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