I only read about io_uring without yet having a chance of actually using it so take this with a grain of salt: I read that io_uring has two modes, one where yo

I only read about io_uring without yet having a chance of actually using it so take this with a grain of salt: I read that io_uring has two modes, one where you signal via a system call and another that uses memory mapped polling. https://unixism.net/loti/tutorial/sq_poll.html https://unixism.net/loti/tutorial/sq_poll.html states: > Reducing the number of system calls is a major aim for io_uring. To this end, io_uring lets you submit I/O requests without you having to make a single system call. This is done via a special submission queue polling feature that io_uring supports.