I found this URL by Googling. It isn't authoritative but I think it is correct. The hash function did change in 5.8 to provide better worst-case behavior. I don't know the details but they've gotta be in the source somewhere. ;-)

Update: You might also find this one useful. 

-sauoq
"My two cents aren't worth a dime.";

In reply to Re: How does perl implement Perl's hash? by sauoq
in thread How does perl implement Perl's hash? by John M. Dlugosz

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