Siemens Network Hardware SM2 monitoring system Benutzerhandbuch

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U3585-J-Z125-8-76

SM2 monitoring program

Figure 3: Relationship between the sampling cycle and the monitoring cycle

At the end of a monitoring cycle, the monitored data is summarized into groups which have
similar content, extended by the SM2 monitoring task to include additional information (time
stamp, host, ...), and then written to a central SM2 data buffer.

If a user has activated online monitoring, the monitored data is transferred from the central
data buffer to the buffer of the user task. Note that sensitive data is transferred to privileged
users only. The monitored data is then processed and output in the address space of the
user task.

For background monitoring, the SM2 administrator can open an SM2 output file. At the end
of a monitoring cycle, the monitored data is grouped into data records and written to the
SM2 output file. The information in the SM2 output file can be used for subsequent problem
and trend analyses.  Special analysis routines are provided for this purpose.

val2

val3

val4

..... valn

Monitoring cycle

Sampling cycle

val1

---

∑

=

To obtain data, SM2 counts and
system counts are evaluated.
Mean values are computed,
percentage frequencies are
determined, and total values are
calculated in order to arrive at
monitored data.