PEM uses probes
to retrieve statistics from a monitored server, database, operating system or agent. A probe is a scheduled event that returns a set of performance metrics about a specific monitored object. You can use the Probe Configuration
dialog (shown in Figure 6.12) to specify when each probe is executed.
The Probe Configuration
dialog displays a list of the metrics that are collected for the selected node. The Probe Configuration
dialog may also display information about probes that cannot be modified from the current node. If a probe cannot be modified from the current dialog, the background (the area behind the node name) is greyed-out; when highlighted, the status bar will display the node level from which the statistic may be configured.