The work load parameters are those that describe the load imposed on the computer system by the jobs or transactions submitted to it. They are
This is the rate at which the transactions arrive into the system for service. This is expressed per second, minute, etc., depending upon the nature of transactions. It is denoted by 'lambda'.
It is the number of terminals that are generating workload in an interactive computer system, and is represented by 'M'.
It is characteristic of an interactive computer system and is defined as the interval of time that elapses since the user receives the prompt until he issues a new command. A user sesion alternates between execution time (system response time) and think time. It is denoted by 'Z'.
Average Service Demand is the average total time spent by each type of transaction at that particular device. It is generally expressed in seconds. This service demand does not include the time spent by the transaction waiting to obtain a resource. It is the product of the average number of visits to the device and the average amount of time required at the device per visit.