Table D-1 provides a convenient summary of the M/M/ m queueing theory formulas described in Chapter 9.
Definition | Formula |
---|---|
Average number of arrivals | A |
Average number of completed requests | C |
Measurement period | T |
Average busy time | B |
Number of parallel service channels | m |
Average arrival rate |
|
Average interarrival rate |
|
Average system throughput |
|
Average service time |
|
Average service rate |
|
Average total utilization |
|
Average server utilization or load ( m servers) |
|
Probability that arriving request will be enqueued ( ErlangC ) |
|
Average queueing delay |
|
Average response time |
|
Cumulative distribution function of response time |
|
Top |