Error Counters, Measurements and Threshold Alerts Monitoring
The accumulation time period (interval) for PM parameters. Default value is 15 min.
The starting date and time of the selected monitoring interval. Can be:
All - For any applicable date and time when all available intervals are monitored.
Current - Current date and time of the system.
Specific - Specific date and time
The threshold value of a specific PM counter. Thresholds are applicable for both 15-
minute and 1-day current intervals. Threshold value equals to 0 implies that threshold
control is disabled. If the Threshold value is empty, no change can be made in multiple
operations.
System Time of Day (TOD) adjustment will cause performance data interval timestamp
changes as follows:
When TOD is adjusted forward or backward then ALL recent history interval timestamps
are changed forward or backward accordingly;
When TOD changes due to DST(Daylight Saving Time) start (one hour is skipped), then
recent history intervals sequence will skip the non-existing hour, e.g. 01:15; 01:30; 01:45;
<DST start> 03:00; 03:15, etc. sequence will appear;
When TOD changes due to DST end (last hour is repeated twice), then recent history
intervals will represent this hour twice (before and after DST end) by intervals with
duplicated timestamps, e.g. 01:00, 01:15; 01:30; 01:45; <DST stop> 01:00; 01:15, etc.
sequence will appear;
Changing the DST range can cause a shift in interval timestamp as follows:
If an interval was collected within the DST range and after changing the range it is
not within the DST range then its timestamp will shift backward;
If an interval was collected outside the DST range and after changing the range it is
within the DST range then its timestamp will shift forward.
TOD changes can cause partial or long intervals.
Configuring PM Counters Collection
The PM counter collection can be configured by setting the following parameters:
Start time within a 24 hour day when the accumulation process starts
The frequency at which the counters are collected
The line segments over which counters are collected - by default, counters are collected
from all line segments
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