Serhiy Storchaka added the comment:
> Serhiy, the performance of hash() for long strings isn't very relevant for
> the general performance of a Python program.
It exposes the raw speed of hashing algorithm. It is good as a first estimate,
because more real cases require more sophisticated measurements.
> Short strings dominate. I've modified the timeit to create a new string
> object every time.
timeit is absolutely not suitable for this. Need to write a C program that
uses the Python C API.
> for I in 5 10 15 20 30 40 50 60; do echo -ne "$I\t"; ./python -m timeit
> -n100000 -r30 -s "h = hash; x = 'รค' * $I" -- "h(x + 'a')" | awk '{print $6}'
> ; done
Please, do not be fooled by the wrong measurements. You measure the height of
the building together with the hill, on which it stands. Use "-n1" and you will
see a
completely different numbers.
----------
_______________________________________
Python tracker <[email protected]>
<http://bugs.python.org/issue14621>
_______________________________________
_______________________________________________
Python-bugs-list mailing list
Unsubscribe:
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
