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Looks like fedora is compiling cpython with the -o3 flag, which does aggressive function inlining among other optimizations.

This seems to improve python benchmarks performance by at most 1.16x at a cost of an extra 3MB in binary size (text segment). Although it does seem to slow down some benchmarks as well though not significantly.

O1 - local register allocation, subexpression elimination O2 - Function inlining only small functionsO3 - Agressive inlining, SMID

0:00 Intro1:00 Fedora Linux gets Fast Python5:40 What is Compiling?9:00 Compiling with No Optimization12:10 Compiling with -O115:30 Compiling with -O220:00 Compiling with -O323:20 Showing Numbers

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