Siemens U3585-J-Z125-8-76 1 System resource utilization by SM2, External storage utilization

6 Notes on SM2 operation

6.1 System resource utilization by SM2

To perform monitoring, SM2 must use the resources of the system to be monitored. This section provides an overview of SM2 resources requirements and information on assessing and restricting the induced system utilization.

With regard to system utilization, only the following basic resources are considered:

–external storage

–CPU

–main memory

During monitoring, only the resources utilized by the monitoring task are analyzed (i.e. without considering any parallel SM2 user programs), this being the way SM2 is most usually operated.

6.1.1 External storage utilization

The disk storage space requirements for SM2 output files can be restricted by:

–appropriate organizational measures (e.g. transfer of old SM2 output files to tape and creation of a new SM2 output file for each monitoring task)

–modifying SM2 parameters (e.g. specification of the monitoring cycle with the OFFLINE-PERIOD operand)

–specifying the monitoring programs to be activated

–compressing the output files with the SM2U1 statement SET-COMPRESSION

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