Thu Mar 15 13:57:45 CET 2007
El Jueves, 15 de Marzo de 2007 07:45, Corrado Santoro escribió:
> Maybe someone reminds that, at the last EUC, the talk by Enzo Nicosia on
> programming robots with Erlang presented the possibility (or necessity)
> to have a *native support* for sharing simple data among processes. This
> was due to avoid the latency of message passing between processes that
> need/share the same information (this latency is dangerous for a
> real-time system).
I am curious about this. Is the latency of sending a message so high that
it affects a robot? It seems to be (from a quick non very reliable test :)
more or less in the single digits microseconds.
I do not think that using shared memory with semaphores would be
much faster (if at all), but of course I have not made any measurements :)
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