Where did you get this idea? Depending on your task, Erlang can be very fast with IO because it will aggressively use writev/readv instead of write. Obviously,

Where did you get this idea? Depending on your task, Erlang can be very fast with IO because it will aggressively use writev/readv instead of write. Obviously, you can do this if you "know about it" in low level langs, but it might be a pain. Erlang is generally considered to be compute-slow (which is generally the case without dropping to nifs).