[Python-Dev] Python Benchmarks

[M.-A. Lemburg]

Fredrik Lundh wrote:
> M.-A. Lemburg wrote:
> 
>> Some more interesting results from comparing Python 2.4 (other) against
>> the current SVN snapshot (this):
> 
> been there, done that, found the results lacking.
> 
> we spent a large part of the first NFS day to investigate all
> reported slowdowns, and found that only one slowdown could be 
> independently confirmed (the exception issue).
> 
> try running some of your subtests under timeit, and see if you
> can repeat the results.

The results were produced by pybench 2.0 and use time.time
on Linux, plus a different calibration strategy. As a result
these timings are a lot more repeatable than with pybench 1.3
and I've confirmed the timings using several runs to make sure.

Still, here's the timeit.py measurement of the PythonFunctionCall
test (note that I've scaled down the test in terms of number
of rounds for timeit.py):

Python 2.4:
10 loops, best of 3: 21.9 msec per loop
10 loops, best of 3: 21.8 msec per loop
10 loops, best of 3: 21.8 msec per loop
10 loops, best of 3: 21.9 msec per loop
10 loops, best of 3: 21.9 msec per loop

Python 2.5 as of last night:
100 loops, best of 3: 18 msec per loop
100 loops, best of 3: 18.4 msec per loop
100 loops, best of 3: 18.4 msec per loop
100 loops, best of 3: 18.2 msec per loop

The pybench 2.0 result:

PythonFunctionCalls:   130ms   108ms  +21.3%   132ms   109ms  +20.9%

Looks about right, I'd say.

-- 
Marc-Andre Lemburg
eGenix.com

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