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SubjectRe: more on hash functions

Chuck Lever writes:

> every hash function i've tried, including this one, left almost
> half the buckets empty during a moderate file system load.

Every hash function you tried was influenced by your own experience.
You need some new ideas. This ought to work:

1. Collect real data and save it as C source code. (an array of unsigned)
2. Write a userspace hash function benchmark.
3. Put your source on the web.
4. Get the problem posted on www.slashdot.org as a challenge.
5. Keep a ranking on web to encourage competition.

BTW, your web server will need lots of bandwidth if you do this.

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