Subject: [aqm] Measuring congestion levels

From: Andrew Mcgregor <[email-masked]>
Date: Mon, 10 Nov 2014 13:32:30 -1000

I think we could derive a congestion level from eqn 26 of
http://www.ikr.uni-stuttgart.de/Content/Publications/Archive/Bo_IP00_32462.pdf

That equation gives an 'effective bandwidth' for a flow or aggregate.
These are additive, and congestion can be measured as the ratio between the
ingress effective bandwidths and the actual link capacity.  In a way, this
compares the AQM to a drop-tail queue, which would drop packets at a rate
given by eqn 25 in the same circumstances.

-- 
Andrew McGregor | SRE | [email-masked] | +61 4 1071 2221