You can add markers to sources to understand the behavior of events. Markers listen to incoming events and provide information about the events. When you send a batch of events into RulePoint, markers help you understand the time it takes to process that batch of events.
A source produces marker events to the topics, if you configure a marker in that source. You can create marker rules to listen to the system markers. When the events match the rule condition, you get an alert that contains information about the event.