[ECOS] Network characterisation with nc_test_master.c and nc_test_slave.c

["Richa Jain Mehta" <richa at cradle dot com>]

Hello,

  I've been trying to find out the performance of eCos on the network using
the network characterisation in
nc_test_master.c and nc_test_slave.c. I cant get this test to run.

If I run the tests as they are, with UDP_ECHO being tried first, there is
invariably a crash - debugging it shows it happens somewhere in recvfrom().
If I modify nc_test_master.c so that UDP_SEND is called first, UDP_RECV
second and UDP_ECHO third, this crash happens after UDP_RECV.

Has anyone come across problems like this?

A few other questions:
1. In both files, every time select() is called, there is a check that if
the return values <=0, it is an error. However 0 <NOERROR> is a valid
value.......

2. What are the standard ways to measure the eCos net stack performance? Is
there any other way apart from these network characterisation tests?


I compiled and ran nc_test_master.c on a linux machine. nc_test_slave.c runs
on my target board.
Also, due to some limitations I am still using eCos v 1.3....
Are there any known bugs in 1.3 that may cause this behaviour?

ps: Can someone tell me whether it is possible to port only the netstack
from eCos 2.0 to the version I have? Any estimates on how much effort it
would take??


Thanks and regards,
Richa.


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