Eventing › Performance Management Events

Performance Management Events

You can define two types of performance management events using event rules. You add event rules to monitoring profiles.

Time over threshold event

Is triggered by a constant (fixed-value) rule when an observed metric differs from a set fixed value for a specified duration within a window of time.

Example:

An event rule can be defined to generate an event when bandwidth utilization exceeds 80 percent for a duration of 5 minutes within a given 10-minute window of time while polling at a 5-minute interval.

Deviation from normal event

Is triggered by a standard deviation rule when an observed metric differs from what is considered to be "normal" for a specified duration within a window of time. “Normal” is based on the calculated baseline average. Initially, when limited information has been collected, the baseline average is calculated for the same hour for every day. When more data is available, Data Aggregator switches its averaging calculations to a same day of the week, same hour hourly averaging.

Example:

An event rule can be defined to generate an event when bandwidth utilization exceeds one standard deviation from the calculated same day of the week, same hour hourly average for a duration of 5 minutes within a given 10-minute window of time while polling at a 5-minute interval.