Re: Async UDP I/O?

Benjamin LaHaise (bcrl@redhat.com)
Mon, 26 Nov 2001 17:01:05 -0500


On Mon, Nov 26, 2001 at 09:43:15PM +0000, Alan Cox wrote:
> What do you mean by "asynchronous UDP" - all UDP is asynchronous. You ask
> it to send it and it gets queued or dropped somewhere - its not subject
> to flow control like TCP
>
> Can you explain more ?

Async receive helps a lot when you've got tons of open sockets (needed to
get queuing right). I think that the current tx mechanism is broken; it's
quite useful to get backpressure from network devices for things like mlppp
implemented the right way (as a network protocol, instead of its own layer).

-ben
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/