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[Python-Dev] Avoiding CPython performance regressions

[Python-Dev] Avoiding CPython performance regressionsFabio Zadrozny fabiofz at gmail.com
Mon Nov 30 06:02:12 EST 2015
Hi python-dev,

I've seen that on and off CPython had attempts to measure benchmarks over
time to avoid performance regressions (i.e.: https://speed.python.org), but
had nothing concrete so far, so, I ended up creating a hosted service for
that (https://www.speedtin.com) and I'd like to help in setting up a
structure to run the benchmarks from https://hg.python.org/benchmarks/ and
properly upload them to SpeedTin (if CPython devs are Ok with that) -- note
that I don't really have server to run the benchmarks, only to host the
data (but https://speed.python.org seems to indicate that such a server is
available...).

There's a sample report at:
https://www.speedtin.com/reports/1_CPython27x_Performance_Over_Time/ (it
has real data from running using the PyPy benchmarks as I only discovered
about the benchmarks from https://hg.python.org/benchmarks/ later on --
also, it doesn't seem to support Python 3 right now, so, it's probably not
that useful for the current Python dev, but it does have some nice insight
on CPython 2.7.x performance over time).

Later on, the idea is being able to compare across different Python
implementations which use the same benchmark set... (although that needs
other implementations to also post to the data to SpeedTin).

Note that uploading the data to SpeedTin should be pretty straightforward
(by using https://github.com/fabioz/pyspeedtin, so, the main issue would be
setting up o machine to run the benchmarks).

Best Regards,

Fabio
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