You can set a user level buffer size of the socket driver, and a receive buffer size (see http://erlang.org/doc/man/inet.html http://erlang.org/doc/man/inet.htm

You can set a user level buffer size of the socket driver, and a receive buffer size (see http://erlang.org/doc/man/inet.html http://erlang.org/doc/man/inet.html). Why is another level of buffering needed?