[Python-Dev] 2.5a1 Performance

[Jeremy Hylton]

On 4/18/06, M.-A. Lemburg <mal at egenix.com> wrote:
> Anthony Baxter wrote:
> > On Thursday 06 April 2006 04:10, Benji York wrote:
> >> On a related note: it might be nice to put a pystone run in the
> >> buildbot so it'd be easier to compare pystones across different
> >> releases, different architectures, and between particular changes
> >> to the code. (That's assuming that the machines are otherwise idle,
> >> though.) --
> > -1.
> >
> > A bad benchmark (which pystone is) is much worse than no benchmark.
>
> I could contribute pybench to the Tools/ directory if that
> makes a difference:

I'd find that helpful.

Jeremy

>
>                 pybench -- The Python Benchmark Suite
>
>         Extendable suite of of low-level benchmarks for measuring
>               the performance of the Python implementation
>                       (interpreter, compiler or VM).
>
> ________________________________________________________________________
>
> WHAT IS IT ?:
>
> pybench is a collection of tests that provides a standardized way
> to measure the performance of Python implementations. It takes a
> very close look at different aspects of Python programs and let's
> you decide which factors are more important to you than others,
> rather than wrapping everything up in one number, like the other
> performance tests do (e.g. pystone which is included in the Python
> Standard Library).
>
> pybench has been used in the past by several Python developers to
> track down performance bottlenecks or to demonstrate the impact
> of optimizations and new features in Python.
>
> There's currently no documentation and no distutils support in
> pybench; that'll go into one of the next releases. For now,
> please read the source code. The command line interface for pybench
> is the file pybench.py. Run this script with option '--help'
> to get a listing of the possible options. Without options,
> pybench will simply execute the benchmark and then print out
> a report to stdout. Here's some sample output:
> """
> Tests:                              per run    per oper.   overhead
> ----------------------------------------------------------------------
>           BuiltinFunctionCalls:     131.50 ms    1.03 us    0.50 ms
>            BuiltinMethodLookup:     195.85 ms    0.37 us    1.00 ms
>                  CompareFloats:     126.00 ms    0.28 us    1.00 ms
>          CompareFloatsIntegers:     201.05 ms    0.45 us    0.50 ms
>                CompareIntegers:     192.05 ms    0.21 us    2.00 ms
>         CompareInternedStrings:     117.65 ms    0.24 us    3.50 ms
> ...
>                      TryExcept:     289.75 ms    0.19 us    3.00 ms
>                 TryRaiseExcept:     179.05 ms   11.94 us    1.00 ms
>                   TupleSlicing:     159.75 ms    1.52 us    0.50 ms
>                UnicodeMappings:     171.85 ms    9.55 us    1.00 ms
>              UnicodePredicates:     152.05 ms    0.68 us    4.00 ms
>              UnicodeProperties:     203.00 ms    1.01 us    4.00 ms
>                 UnicodeSlicing:     190.10 ms    1.09 us    2.00 ms
> ----------------------------------------------------------------------
>             Average round time:   10965.00 ms
> """
>
> This is the current version:
>
>         http://www.lemburg.com/files/python/pybench-1.2.zip
>
> --
> Marc-Andre Lemburg
> eGenix.com
>
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