Mar 26, 2015 ... In a single-server system G/G/1 with arrival rate ? and mean service time E(B) the
amount of work arriving per unit time equals ?E(B). The server can handle 1 unit
work per unit time. To avoid that the queue eventually grows to infinity, we have
to require that. ?E(B) < 1. Without going into details, we note that ... 
