Siemens SM2 monitoring system manual Performance expectations of the user SM2 monitoring program

Performance expectations of the user SM2 monitoring program

The sum of single-step and multi-step transactions required for handling one application is called an operation.

The characteristic criteria for describing performance expectations are:

●Transaction rate

Sum of all successfully completed transactions per unit of time

●Response time

Time required for processing by the DP system

●Number of simultaneously active users.

The monitored values for these characteristics are determined in SM2 by the monitoring program BCAM-CONNECTION (page 35), RESPONSETIME (page 45) and UTM (page 53).

Batch processing criteria

In batch processing, the unit of DP processing is a job.

●Throughput rate

Number of successfully processed jobs per unit of time

●Dwell time

Time required for processing a job

For the individual user, a satisfactory performance (short response time, short dwell time) is obtained if the required resources are available when they are requested. This requirement can easily be meet if utilization of the requested resources (in particular of the input/output devices) is kept to a minimum.

The DP system performance, on the other hand, is characterized by the transaction and throughput rates, where maximum utilization of the resources is desirable for economic reasons.

These contradictory performance requirements relating to resource utilization can be fulfilled only by carefully planning the workload and the associated resource requirements.

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