Mathis Throughput Estimator

[mfeit-internet2]

As a minimally-intrusive measurement, It might be useful to calculate theoretical throughput based on MSS, RTT and loss per Mathis et al.

Steps would be:

• Open a socket to the far end
• Maybe send a small amount of data just to prime the pump
• Use ss(8) to pull the MSS and maybe RTT from the socket data
• Close the socket
• Test packet loss to the far end
• Put that into the Mathis equation: (MSS/RTT) * (1/sqrt(LOSS))
• Return the result as bandwidth

Useful ss command:

ss --tcp -i -O --no-header