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Message from discussion Python 3.3 vs. Python 2.7 benchmark results (again, but this time more solid numbers)
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Antoine Pitrou  
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 More options Oct 27 2012, 7:04 pm
From: Antoine Pitrou <solip...@pitrou.net>
Date: Sun, 28 Oct 2012 01:00:48 +0200
Local: Sat, Oct 27 2012 7:00 pm
Subject: Re: [Python-Dev] Python 3.3 vs. Python 2.7 benchmark results (again, but this time more solid numbers)
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On Sun, 28 Oct 2012 01:39:42 +0300

Serhiy Storchaka <storch...@gmail.com> wrote:
> On 28.10.12 01:06, Brett Cannon wrote:
> > I really doubt that as the amount of stat calls is significantly reduced
> > in Python 3.3 compared to Python 3.2 (startup benchmarks show Python 3.3
> > is roughly 1.66x faster than 3.2 thanks to caching filenames in a
> > directory).

> $ strace ./python -c '' 2>&1 | grep -c stat

> Python 2.7 - 161 stats
> Python 3.2 - 555 stats
> Python 3.3 - 243 stats

This will probably depend on the length of sys.path:

$ strace -e stat python2.7 -Sc "" 2>&1 | wc -l
35
$ strace -e stat python3.2 -Sc "" 2>&1 | wc -l
298
$ strace -e stat python3.3 -Sc "" 2>&1 | wc -l
106

$ strace -e stat python2.7 -c "" 2>&1 | wc -l
200
$ strace -e stat python3.2 -c "" 2>&1 | wc -l
726
$ strace -e stat python3.3 -c "" 2>&1 | wc -l
180

Regards

Antoine.

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