NetCPS

Netcps is a handy utility to measure the effective performance on a TCP/IP network. I wrote it during a trouble shooting session with some cisco switches that seemed to have problems with 100 MBits connections. I was bit surprised when I failed to find any such utilities on the net... Start "netcps -s" on one machine, and "netcps ip.addr.of.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 second`s accuracy. 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 Intel 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.