Increase the collection intervals. Start by doubling the collection intervals.
To increase the collection intervals:
1). Navigate to the Agent Status page (Administration | Agents | Agent Status).
2). Highlight the NMS agent, click the "Edit Properties", button and then click the "Modify the private properties for this agent" link.
3). Clone the "Collector Config" list under the "Data Collection Scheduler" section and give the cloned list a new name.
4). Double the metrics and alertData values in the "Default Collection" column.
5). If the flowMetrics, flowTopN, and agentLoad values are less than 60 increase them to 60.
6). Save the changes.