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Re: PATCH: Add objc-lang.c, further cleanup - TAKE TWO
On Tue, Dec 04, 2001 at 05:36:01AM +0000, Neil Booth wrote:
>
> Incidentally, the NetBSD people tried out a bunch of hash functions
> for their kernel (including the much-touted FNV) for hashing both text
> and binary data last week. They found that the Perl hash was one of
> the best, in terms of both speed and distribution. They tested some
> hash from GCC 2.95, which wasn't as good as the Perl one.
Reference? I'd like to see this.
> I tried out the cpplib hash on about 10000 file names (their test for
> text) and 1.5MB of /dev/urandom output (their test for binary data).
> I found that the current cpplib hash was as good as the Perl hash
> (same in speed, sometimes better sometimes worse for distribution).
Just yesterday I found an old letter from someone suggesting I try just
hash = hash * 9 + ch
for the hash step. If you have a harness set up to do these tests
already, mind trying that one?
zw