To diagnose the network speed between two systems, you can use some easily obtainable public domain software, ttcp on Linux, and iperf on Windows. Neither need to be installed, and can run as-is. The test is over a very short period of time, so it is not indicative of normal operations, but can give a theoretical best speed, and identify sites where the network is not sufficient for the tasks the customer wishes to perform.
Linux - Linux
- Download ttcp and place file ttcp onto the two systems. A websearch can find many locations to download this public domain software.
- On the first system, run ttcp -r
- From the second system, run ttcp - t[first system]
# ttcp -t [192.168.1.1]
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port 5001 tcp -> 192.168.1.1
ttcp-t: 16777216 bytes in 0.41 real seconds = 39825.28 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 0.21, calls/sec = 4978.16
ttcp-t: 0.0user 0.2sys 0:00real 64% 0i=0d 0maxrss 0+3pf 66+5csw
The speed is 38.9MB/sec
Windows - Windows:
iPerf3 is a tool for active measurements of the maximum achievable bandwidth on IP networks.
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