Erlang C Formula Calculator
This script evaluates the performance measures (service level, delay probability and average waiting time) of a queueing system using the Erlang C formula.
See the instructions for usage details.
This script evaluates the performance measures (service level, delay probability and average waiting time) of a queueing system using the Erlang C formula.
See the instructions for usage details.
Consider the classic M/M/c queueing model: Poisson arrival process, exponential service time and no abandonment by the customers (that is, customers have infinite patience time). The queue capacity can be finite or infinite. Because there are no abandonments, the number of servers must be greater than the offered load for the queue to be stable and reach steady state. Let \(\lambda\) be the arrival rate and \(1/\mu\) the average waiting time, then the offered load is \(\rho = \lambda/\mu\).
The performance measures returned by this program are:
For questions, comments, suggestions or bug alerts, please contact:
Wyean Chan - chanwyea@iro.umontreal.ca