This option will display the number of updates that have been processed across all the domain controllers in the forest or domain controllers hosting the selected domain context.  The metrics are updated based on the interval selected. For each domain controller the following metrics are displayed based, the number of updates processed since the last update, the highest number of updates seen between updates, the total number of updates since the monitoring started and the current time on the domain controller.

Setting the Domain Context will limit domain controllers that are monitor to the DCs that host the specified context. This should be entered in DN format i.e. DC=nettools,DC=net.