← Wednesday, October 7, 2026Performance & OSBenchmark
An informal benchmark compares Python 3.15 with earlier releases
The benchmark runs Python 3.15.0rc3 against versions back to 3.10, with the author cautioning that results from a few programs are not universal. It may help engineers assess runtime changes, but the measurements are explicitly informal.
- What
- An informal benchmark compares Python 3.15.0rc3 with earlier Python versions, PyPy, Node.js and Rust.
- How
- It tests recursive Fibonacci and bubble sort programs in single-threaded and four-thread modes, with JIT and free-threading variants where available.
- Why it matters
- Its narrow test set and exclusion of I/O-bound code mean engineers should not treat it as a comprehensive interpreter-performance profile.
Read on blog.miguelgrinberg.com → Hacker News · 44 commentsLobsters
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