Siemens Network Hardware SM2 monitoring system User Manual
U3585-J-Z125-8-76
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SM2 monitoring program
Outputting and saving monitored data
Methods used for compressed output of monitored data
1. Mean values
SM2 adds up the sampled values at the end of each sampling cycle and computes a
mean value for each monitoring cycle (e.g. the number of tasks) as follows:
mean value for each monitoring cycle (e.g. the number of tasks) as follows:
Sum of sampled values
Average =
Average =
LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2
Number of samples
2. Percentage frequency
At the end of each sampling cycle, SM2 records the occurrence of specific events or
conditions and computes the percentage frequency of events (conditions) in relation to
the total number of samples (e.g. channel utilization) as follows:
conditions and computes the percentage frequency of events (conditions) in relation to
the total number of samples (e.g. channel utilization) as follows:
Sum of occurrences
Frequency =
Frequency =
LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2LR2 *100 %
Number of samples
3. Ascending system counters and SM2 counters
The activity during the monitoring cycle can be determined by calculating the
differences between values gathered at the beginning and the end of the monitoring
cycle (e.g. idle time).
differences between values gathered at the beginning and the end of the monitoring
cycle (e.g. idle time).
4. Computation
SM2 computes some data from monitored data, e.g. the summation values for all
categories.
categories.
Uninterruptible clock resetting
SM2 works internally with UTC time. During the switch from daylight saving time to winter
time and vice versa, SM2 can continue to work without interruption.
time and vice versa, SM2 can continue to work without interruption.