Re: Socket vs Data Queue speed (was: Processor speed)

To test the speed of sockets, here is a simple test (in psuedo code)

-----------------------------
Socket Server:
-----------------------------
socket()
bind()
listen()
accept()

for i = 1 to 10000
  read()
  write()
endfor
------------------------------
Socket Client:
------------------------------
socket()
connect()

for i = 1 to 10000
  write()
  read()
endfor

You could also do an equivalent test with a pair of data queues.  In my
tests, data queues completed the exchange of equivalent messages in half the
time that sockets took, for programs residing on the same AS/400.

For inter-system communication between my PC and the AS/400, my LAN seemed
to be the bottleneck.  Sockets vs. client access data queue APIs were
equivalent in performance.

I have never tested sockets vs. remote data queues between two AS/400.  It
would be interesting to find out the difference?


Nathan Andelin.


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