Make Nick BDFG delegate

add string length distribution
add http://bugs.python.org/issue19183

pep-0456.txt

@@ -3,6 +3,7 @@ Title: Secure and interchangeable hash algorithm
 Version: $Revision$
 Last-Modified: $Date$
 Author: Christian Heimes <christian@python.org>
+BDFL-Delegate: Nick Coghlan
 Status: Draft
 Type: Standards Track
 Content-Type: text/x-rst
@@ -461,10 +462,17 @@ speed but it is still in the same order of magnitude as the current FNV code.
 It's yet unknown how the new distribution of hash values affects collisions
 of common keys in dicts of Python classes.
 
+Typical length
+--------------
+
 Serhiy Storchaka has shown in [issue16427]_ that a modified FNV
 implementation with 64 bits per cycle is able to process long strings several
 times faster than the current FNV implementation.
 
+However according to statistics [issue19183]_ a typical Python program as
+well as the Python test suite have a hash ratio of about 50% small strings
+between 1 and 6 bytes. Only 5% of the strings are larger than 16 bytes.
+
 
 Grand Unified Python Benchmark Suite
 ------------------------------------
@@ -526,6 +534,8 @@ versions of the PEP aim for compile time configuration.
 Reference
 =========
 
+* Issue 19183 [issue19183]_ contains a reference implementation.
+
 .. [29c3] http://events.ccc.de/congress/2012/Fahrplan/events/5152.en.html
 
 .. [fnv] http://en.wikipedia.org/wiki/Fowler-Noll-Vo_hash_function
@@ -544,6 +554,8 @@ Reference
 
 .. [issue16427] http://bugs.python.org/issue16427
 
+.. [issue19183] http://bugs.python.org/issue19183
+
 .. [trie] http://en.wikipedia.org/wiki/Trie
 
 .. [city] http://code.google.com/p/cityhash/