Can tokio use libaco to get a better performance ?

[loongs-zhang]

libaco is a c coroutine library, the question is shown in the title.

[Noah-Kennedy]

Tokio uses the futures/coroutine model built into rustc and the standard library. So we can't exactly switch to a different coroutine model. Also, I would be careful when analyzing benchmarks on coroutine switching, as the relevance of such benchmarks to real-world application performance is often limited.