Python 3.15's Ultra-Low Overhead Interpreter Profiling Mode – Ken Jin's Blog
Summary
The article discusses CPython 3.15's Ultra-Low Overhead Interpreter Profiling Mode, a profiling approach designed to enable low-overhead JIT compilation by swapping dispatch tables rather than using two interpreters. It covers profiling strategies, dual dispatch concepts, and present benchmarking results showing modest overhead improvements, plus reflections on the approach and potential broader applications.