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0 pointsglic3rinu6y ago0 comments

I wouldn’t mind cpython performance improvements over language features. Specifically startup time. Py cli tools can easily take up to 300-600ms to start. Now, try to use them for scripting. A single script doing a bunch of calls to python clis has already several seconds of runtime penalty.

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3 comments · 1 top-level

paulddraper6y ago· 2 in thread

I completely agree, but you'll notice similar startup overheads in almost all non-native languages: Java, Ruby, Node.js.

I wonder if there is anything that can really be done, outside of something like Cython.

Rotareti6y ago

> I wonder if there is anything that can really be done, outside of something like Cython.

I compile my cli tools with nuitka [0], the resulting binaries take half the time to start. I find the difference quite notable.

[0]: https://github.com/Nuitka/Nuitka

glic3rinuOP6y ago

The interpreter loads reasonably fast, takes around 20-40ms. And it's even faster if "import site on initialization" is disabled.

But startup time increases an order of magnitude once you start importing 'requests' and other common packages.

Perhaps an option to turn imports lazy...

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