#pyconus profiling - There is a tool named `perf` that uses stackpointers (a feature of 3.12) and features tangentially related to JITs (3.13) to allow native code profilers to tell you where you python is slow (e.g. too many copies or bad branch prediction)
oh now I see why a copy-paste JIT is isomorphic to instrumenting python for performance profiling. Both wrap each opcode in a little function.
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