Netcps is a handy utility to measure the effectice performance 
on a TCP/IP network.

I wrote it during a trouble shooting session with some cisco switches 
that seemed to have problems with 100mbits connections. I was bit
surprised when I failed to find any such utilities on the net...

Anyways. Start "netcps -s" on one machine, and 
"netcps ip.address.to.other.machine" on the other machine, and the two
programs will pump 100 MB of data over the network. The CPS is measured
with 1/1000 seconds accurancy.

Note that winsock seems to take quite some CPU resources on high-speed 
connections. I got ~4 MB/s max on a Intel Pentium 133, and ~7 MB/s
on an AMD K6 200, using a Intel Pentium Pro 200 server with NT 4.0 Server
as the other host. I got a report that two Pentium 200 servers running 
NT 4.0 server had 10 MB/s on a direct connection (server to server, no 
hub or switch).

Netcps use a normal TCP/IP connection, pumping data without any disk
access. The source code is attached.

Netcps was something I wrote in a hurry. It should be useful for testing
networks, and the performance of hubs, switches and routers. The
program is targeted towards my needs, and have no fancy features.
The program should however be useful for network professionals. It's
quite small and easy to use :-)

If I ever make an upgrade, you will find it at ftp.no.jgaa.com or
ftp.jgaa.com.

Netcps is freeware. You can use it, and the source code, to whatever
purpose you want - with one small restriction: Governmental and military
use is NOT permitted.

Jarle Aase, february 1998


email: jgaa@jgaa.com
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