Glossary of Queueing Network Model Terms
- Active Set: The transactions being processed by a system at a given time.
- Control Unit: The device that
allows transactions to enter the system from the memory queue.
- CPU Utilization: The percentage of
time the CPU is busy and not waiting for peripheral devices to complete processing a job.
- Degree of Multiprogramming: The number of active processes in a system.
- Load: The number of active processes in
- Memory Queue: Transactions are held in
the memory queue until resources in the system are free to serve the
- Multiprogramming Level (MPL): The number of active processes in a system.
- Response Time: The amount of time
a job is at a server, including the service time.
- Server: Also referred to as a
device. A component of a system that performs a job for a transaction.
- Service Time: The amount of time a
server takes to complete work on a task.
- Throughput: The number of
transactions completed by the system or by a server per unit time.
- Visit Ratio: The number of times a
transaction is serviced by a server before exiting the system.
[D4], [D5], & [M2]