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A comment on Stack size invisibility in C and the effects on "portability". Parent comment

Re:Stack size invisibility in C and the effects on "portabil... by floatboth on Tuesday September 28, 2021 @08:55PM (#28689190)
Kernel threads have tons of switching overhead so state machines are still better. Get your compiler to compile clean imperative code into them :)

(okay, by "clean" I do mean littered with `.await`, but it's still structurally clean)

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Re:Stack size invisibility in C and the effects on "portabil... by wahern on Tuesday September 28, 2021 @10:47PM (#28689736)
You don't need kernel scheduling for stackful threading. So-called green threading was common long before event-oriented asynchronous programming became popular with the advent of kqueue and epoll. See, e.g., https://www.gnu.org/software/pth/

That said, you can make kernel-aware user-controlled context switching much faster than it is currently: https://www.theregister.com/2020/08/10/google_scheduling_cod...

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