Baseline_engine percent algorithm calculation
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CA Unified Infrastructure Management
CA Unified Infrastructure Management:Release:xx.x
UIM - BASELINE_ENGINE:UIMBAE
How does Baseline_Engine probe use the Percent threshold configuration for dynamic alarms ?
Percent algorithm is based on the [Percent of baseline value + baseline value] for that period.
If Baseline is X and Percent threshold configured is Y%, QoS Value is Q is Compared with ((Y% of X) + X).
If the baseline value for 3PM - 4PM on Monday is calculated to be 7.0 , and the dynamic alarm algorithm is set to percent and threshold is provided to be >= 10%, then the alarms will be generated if QOS value is reported 7.7 and above.
QOS Value: QOS_CPU_UTILIZATION =
Baseline value =
Percent Threshold =(
100%, 40%, 20%, 10%, 5%
) [Critical -> Info]
First baseline checks upon configured threshold values:
17 > 100% of Baseline + Baseline value
17 > 9.2 + 9.2
17 > 18.2 (False)
17 > 40% of Baseline + Baseline Value
17 > 3.68 + 9.2
17 > 12.88 (True) Alarm is sent
Similarly for QOS_REACHABLILITY_REACHABILITY =
Baseline Value = 100.0
Percent Threshold = (
100 <= 50% of Baseline + baseline
100 <= 50% of 100 + 100
100 <= 150 (True) Alarm is sent.
Configuring Alarm Thresholds
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