[erlang-questions] How to handle a massive amount of UDP packets?

John-Paul Bader <>
Mon Apr 16 07:23:46 CEST 2012


so far I did not set the mentioned properties to higher values and will 
experiement with that as well.

Magnus Klaar wrote:
> Hi!
> You didn't really answer my question, but you may also want to look into
> buffering the packets and spawning a process to handle the bufffer. It's
> a lot more simple than maintaining a pool of worker processes. You only
> want to do that if you're pooling resources that are expensive to
> create, something which processes aren't.
> MVH Magnus
> On Sun, Apr 15, 2012 at 11:41 PM, John-Paul Bader <
> <mailto:>> wrote:
>     Ok, little update.
>     I've changed the implementation to use {active,false} and a manual
>     gen_udp:recv loop but that made things only slightly faster. Then I
>     commented out the part where I spawned the processes which compute
>     and send back the response to the clients and this gave a _huge_
>     speed improvement.
>     I ran a benchmark on a fast server and could easily handle 100-200k
>     packets per second without losing a single packet.
>     So clearly my problem is dispatching the packet/message to the
>     worker processes. I will experiment with a worker pool next instead
>     of spawning the processes on demand.
>     If you know how to do this dispatching with as little overhead as
>     possible please let me know.
>     ~ John

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