A Plan for 5-10%* Faster Free-Threaded JIT by Python 3.16
13 days ago
- #JIT
- #Python
- #Performance
- Plans to improve CPython's JIT performance: 5% faster by 3.15, 10% by 3.16.
- Profiling and debugger support is essential for production-ready JIT.
- Current JIT region selection uses trace projection; improvements proposed with trace recording.
- New JIT frontend developed, showing promising speed improvements.
- Optimizations in Copy-and-Patch code generation for better performance.
- Register allocation optimizations proposed to speed up the stack machine.
- Reference count semantics in CPython pose challenges for optimizations.
- Free-threading support for JIT is under development, with initial basic support planned.
- Encouragement for contributions to CPython, especially after initial JIT improvements land.