On Wed, 10 Jul 2002, Calin A. Culianu wrote: > On Wed, 10 Jul 2002, R O N A L D D U C K wrote: > > > I am planning to use network support in my real-time section of my > > application. But I could not see any real-time API meant for [...] > I am probably super-naive.. but aren't networks inherently non-realtime? > Ethernet, for instance, has a some inherent non-determinism and chaos > associated with it (collosions and the back-off algorithms come to mind). > Don't such things pretty much throw all realtime expectations out the > window? > We did experiments with an UDP connection between two embedded bords runnin real time Linux: the delivery of packets was deterministic, with an upper latency of 50 micro seconds. This value was measured over a period of 48 hours of continuous sending back and forth. Of course, the network had only the two bords as nodes, but this proved to us that cheap ethernet can be a very viable solution in many applications :-)
Herman -- K.U.Leuven, Mechanical Engineering, Robotics Research Group <http://www.mech.kuleuven.ac.be/~bruyninc> +32 16 322480 -- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED] -- For more information on Real-Time Linux see: http://www.rtlinux.org/
