BTW, the test I did where PyPy was slower than CPython ran for a minute or so (IIRC). It wasn't that long lived, but it wasn't like the "instant" invocation yo

BTW, the test I did where PyPy was slower than CPython ran for a minute or so (IIRC). It wasn't that long lived, but it wasn't like the "instant" invocation you often see with shell scripts either. I don't think the JIT warmup was the main issue there; I think it was PyPy's lack of ability to optimize certain kinds of code combined with increased memory usage.