To phrase it as it's phrased more commonly: What does RTT/T tell us?

I've seen this formula - Transmission Efficiency - mentioned a lot when it comes to networks:

β = RTT/T

But what exactly does this mean? Why is it useful? What's the intuition behind it?


The transmission time reflects how long it takes for a device to push a packet onto the wire at line rate - it's purely a function of packet size and bit rate. The round-trip time adds in the speed-of-light delays, queueing delays, etc.

See: http://en.wikipedia.org/wiki/Transmission_time, ...Round-trip_delay_time and ...Bandwidth-delay_product

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