Elie, > In any case, when operating in non-blocking mode, the timeout is taken into > account, which could mean that recvmmsg() returns while data is still > available (which was not clearly stated). (Combination of much data to > copy and a very sharp timeout). Can you say more about what you see/understand with nonblocking mode. I don't understand what you mean here (and it doesn't fit with what I am seeing on testing). Nonblocking mode should, I believe, always mean an immediate return, regardless of any timeout. Thanks, Michael -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html