Smoothing (also known as metric averaging) is used to prevent Spotlight from generating spurious alarms. It smooths out the peaks and troughs in Spotlight components by averaging the information that Spotlight collects over a specified period of time. It does not affect the charts or tables that display metric values; these continue to display metrics as they are reported.
Use this dialog to set default smoothing for all Spotlight metrics for the connection. To set smoothing for a specific Spotlight metric use the Metric editor. This overrides the default smoothing value for the metric. Metrics Dialog
To set default smoothing for Spotlight metrics for the connection
Note: The change is effective from the next refresh. Pause / Resume / Refresh