Siemens SM2 monitoring system User Manual

52

U3585-J-Z125-8-76

SM2 monitoring programs

The purpose of this function is to provide task-specific variables, from which the resource
requirements of individual tasks can be determined.

This data can be used for the following purposes:

–

to determine which tasks most frequently use specific resources

–

to optimize operation by relocating loads

–

as input data for simulation models or analytic calculations.

SM2 writes this data to the SM2 output file, from which subsequent analysis is possible. As
with SM2 reports, data cannot be output during the monitoring process.

When defining the monitoring program, the tasks to be monitored must be specified. Both
user tasks and system tasks can be monitored.

SM2 can monitor both current tasks already executing or further tasks created in the course
of monitoring operations.

Monitoring information can be written to the SM2 output file at two points in time:

1. At task termination time, if the task is terminated during monitoring.

2. At monitoring termination time, if the task is still executing when the monitoring program

is terminated.

If the devices to be monitored are defined in the DEVICES operand of the SET-TASK-
PARAMETER statement, the number and service time of I/O operations for these devices
are output for each task according to whether they are hardware- or software-related. Due
to the time and effort involved in gathering this monitored data, this monitoring program
should only be used for brief periods of time (e.g. one hour) or for a small number of tasks.
For each task, it is possible to monitor up to 64 devices.

This monitoring program provides information on TCP/IP connections.