legOS : 2860


Robotics / RCX / legOS / 2860	2859 \| 2861

Subject:	some measurements in lnp, please comment!
Newsgroups:	lugnet.robotics.rcx.legos
Date:	Wed, 25 Sep 2002 18:04:42 GMT
Viewed:	2568 times

hi all, i have made some measurements with lnp in legOS 0.2.4 under ideal conditions (dark room with minimal load on PC and RCX) and found that sending a 10 byte message with lnp_addressing_write averages on about 0.06136 seconds (+/- 10 ms for time slicing) and sending a 258 byte message with lnp_addressing_write averages on about 1.10486 seconds (+/- 10 ms for time slicing) anyways, what im wondering is, what should i expect ? i mean, the lnp README sez that the protocol is capable to do up to 4800 baud, but but that doesnt nessecery give you any idea of how much data can be transfered on a given time scale. so i guess that im asking, anyone know the bandwidth and practical throughput that the lnp protocol supports? regards kenneth johansen kennethj@stud.cs.uit.no

Message has 1 Reply:

		Re: some measurements in lnp, please comment!
(...) Old thread, but oh, well. 4800 baud is 4800 bits per second or 600 bytes per second. If you assume 50% overhead, which is optimistic, that's 300 bytes per second. So I think anything over 200 bytes per second is pretty good. (21 years ago, 12-Sep-03, to lugnet.robotics.rcx.legos)

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