Python 2 times slower than Perl
gregj at pdxperts.com
Thu Jul 19 23:05:03 EDT 2001
"Roman Suzi" <rnd at onego.ru> wrote:
> Posting tests showing performance weakness in some typical situations
> is needed to make Python better.
Refining and optimizing Python is a good thing. But these "benchmarks" that
show Python slower or faster than language X don't help. Writing real-world
Python programs, then profiling and optimizing them, and perhaps finding
places to improve the runtime system, the compiler, or the standard
libraries: that is useful. Comparing Python's ability to multiply
floating-point constants a million times in a loop is not useful, not even
when compared to Perl and C.
Every Python program I've written since I started with Python (about a year
ago) has saved me a lot of time. Whether my program might have executed in 3
seconds instead of 5 if I had used Perl (which I can neither read nor write)
is irrelevant. If I was convinced that Perl was 100 times faster I might
ditch Python, but for what I do with it Python is more than fast enough, and
certainly fun enough. If I really had to multiply floating-point numbers
millions of times I'd write the code in C.
> These benchmarks also show how good someones Python is compiled. For
> exaple, I saw that my AMD K6 225 makes almost same results as somebody
> elses Celeron 450 ;-)
They probably have screensavers and Napster and a bunch of other background
crap running on their machine. The lack of even basic controls in the
benchmarking environment changes the results from useless to dangerous.
Portland, Oregon, USA
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