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SubjectRe: random table-driven hash benchmarked
On Thu, 15 Apr 1999, Chuck Lever wrote:

>/* this is 40499 * 65543 - both are prime; the result is ~0.68*(2^32) */
>#define MULTIPLIER 2654425957UL
>
>#define _hashfn(dev,block) \
> ((((unsigned long) (block) * MULTIPLIER) >> 11) & bh_hash_mask)

Personally I like this mul hashfn. But your implementation doesn't use dev
information. Is that intentional?

Andrea Arcangeli


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