After setting a number of Thresholds in the Monitoring Profiles (MP) Event Rules, no threshold events are being triggered even though there are many devices in the groups to which the associated MP has been attached. There are several ways this can happen and checking why which are described below.
When any given metric family takes over 80% of a poll cycle to complete, the threshold monitoring engine transitions to a degraded state. At this point, an event is generated on the Data Aggregator indicating that if the evaluations continue to take over 80% of a poll cycle, threshold evaluation will be disabled if this persists for 15 minutes.
Threshold evaluations are not resumed automatically after they are suspended even if the product is restarted.
Follow these steps to check and see if threshold events were shut off.
For further information on threshold events and threshold event monitoring monitoring event processing see the following wiki article.
Broadcom TechDocs : CAPM 3.7.x - Threshold Monitoring and Threshold Limiter Behavior