uvloop

If I/O-bound tasks are the problem, that would tend to indicate an issue with I/O event loop, not with Python and its async/await implementation. If the default asyncio.SelectorEventLoop is too slow for you, you can subclass asyncio.AbstractEventLoop and implement your own, such as buildiong one on top of uvloop. And somebody's already done that: https://github.com/MagicStack/uvloop Moreover, even if there's _still_ a discrepancy, unless you're profiling things, the discussion is moot. This isn't to say that there aren't problems (there almost certainly are), but that you should get as close as possible to an apples-to-apples comparison first.

Ed: after reading the article, I guess it's safe to say that everything below is false :) --- I'd guess the c++ event loop is more important than the jit? Maybe a better comparison is quart (with eg uvicorn) https://pgjones.gitlab.io/quart/ https://www.uvicorn.org/ Or Sanic / uvloop? https://sanicframework.org/ https://github.com/MagicStack/uvloop