Outperforming CPython: Optimizing the Plush Interpreter for Fibonacci
2025-08-07
The author details the optimization journey of their Plush interpreter, a toy programming language, surpassing CPython in the Fibonacci microbenchmark. Optimizations included instruction merging, profiling with Linux perf, and code patching to eliminate hash lookups. The result? Nearly double the speed on the benchmark, yet surprisingly, no performance improvement in their parallel raytracer, highlighting the limitations of microbenchmarks.
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