[Python-Dev] FAT Python (lack of) performance (original) (raw)

Victor Stinner victor.stinner at gmail.com
Mon Jan 25 16:43:16 EST 2016

Hi,

2016-01-25 22:20 GMT+01:00 Ludovic Gasc <gmludo at gmail.com>:

Just thanks for this big contribution. And maybe this project could give new ideas to optimize Python, who knows ?

Sorry for my long email. I should try to summarize next time :-) In short: FAT Python is not fast today, but it will be faster if you give me a few more months to implement optimizations which will unlock the real power of AST optimizers ;-)

I have a looooong list of ideas of optimizations: https://fatoptimizer.readthedocs.org/en/latest/todo.html

According to microbenchmarks, the most promising optimizations are functions inlining (Python function calls are slow :-/) and specialize the code for the type of arguments.

And I agree to wait until fatoptimizer is proven to be faster than the regular CPython before taking a decision of my 3 PEPs (509, 510, 511).

Victor

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