By default, the Monitor display is automatically refreshed every minute. You can change the refresh the interval by clicking Tools » User Settings. This setting is independent of the collection interval rate for a resource, which specifies how often the Monitor collects metrics from the resource being monitored. See Collection intervals.

 Set the refresh rate

When you click Refresh Data the Monitor retrieves and displays the latest metrics.

 Refresh metrics

When you press F5, the Monitor reloads the browser, retrieves the metrics that the Monitor has collected to date, and displays the metrics.

 Reload the Monitor