That's not to say it's implemented as efficiently as it could be. See here: https://linux.die.net/man/7/aio https://linux.die.net/man/7/aio AFAIK, system-spec

That's not to say it's implemented as efficiently as it could be. See here: https://linux.die.net/man/7/aio https://linux.die.net/man/7/aio AFAIK, system-specific APIs such as epoll or kqueue are the way to go if you're serious about performing asynchronous IO?