On 01.02.2017 10:14, Christian Heimes wrote: > > PEP 456 defines an API to add more hashing algorithms and make the selection > of hash algorithm a compile time option. We can easily add SipHash-1-3 and > make it the default algorithm. Vendors then can select between FNV2, > SipHash-1-3 and SipHash-2-4.
+1 on adding the 1-3 and making it the default; the faster the better. Hash speed for strings needs to be excellent in Python due to the many dict lookups we use in the interpreter. Reading up a bit on the Rust thread and looking at this benchmark which is mentioned in the thread: https://imgur.com/5dKecOW it seems as if it would make sense to not use a fixed hash algorithm for all strings lengths, but instead a hybrid one to increase performance for short strings (which are used a lot in Python). Is there a good hash algorithm with provides better performance for short strings than siphash ? > On another note should we add SipHash-2-4 and 1-3 PRF to the hashlib mode? +1 as well. -- Marc-Andre Lemburg eGenix.com _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
