Carlos is correct:
See the following documentation:
Configure Threshold Profiles - CA Performance Management - 3.5 - CA Technologies Documentation
Specifically:
- Duration
Specifies the total amount of time a given condition must be true within the specified Window to generate an event. The poll cycles that trigger the condition do not need to be consecutive. - Window
Specifies the overall range of time to evaluate the rule condition.
Duration and Window Example:
A monitored device has a poll rate of 5 minutes. An associated threshold profile has an event rule with a duration of 600 (10 minutes) and a window of 3600 (1 hour). An event does not occur when the conditions are triggered for a single poll result because the 5-minute poll does not reach the 10-minute duration. The event occurs only if the conditions of the rule are triggered for a second poll result within one hour of the first triggering poll.
Note: When a threshold is breached, an alarm is created. When the event clears, the threshold is rechecked with the next poll cycle. If the threshold is breached again, a new alarm is created.
So regarding your scenario who likely would not get an event
Joe