Resource Monitors

This summary screen displays currently, active performance monitors in brief.

The Name column displays the identifier for each monitor instance, Enable displays a green check if it is currently enabled, or a red minus if it is disabled.

The Monitor Type column typically displays what the monitor covers. Hover your cursor over this column to see a popup with the selected monitor’s properties. The popup that appears after this query displays the relevant information for the monitor, including whether it is Name, Enabled, and Monitor Type.

The graph that appears to the right of the monitors displays the aggregate availability information for the enabled monitors. Topics graphed include, Available, Not Available, No Data and Not Applicable.

Right-click a listed monitor to do the following (not all menu items appear for all types of monitors):

New Monitor -- Lets you either create a new monitor of the type you select in the sub-menu, or edits the monitor selected in the portlet. See Monitor Editor for details.

New (from Template) -- Opens the Monitor Editor, where you can configure the equipment targets for template monitors, selected in the sub-menu. These templates already have selected attributes and calculations. You can examine exactly what these are in the editor that appears when you select one.

Edit Monitor -- Opens the Monitor Editor, where you can modify the selected monitor.

Details -- Opens a Detail panel, with a reference tree, status summary, and general information about the selected monitor.

Enable / Disable Monitor -- Enables or disables the monitor. Only one of these options appears. Only enabled monitors report data (and demand resources), while disabled monitors do not.

Refresh Monitor --  Re-query to update any targets for the current monitor. See Scheduling Refresh Monitor Targets for instructions about automating this.

Manage Retention Policies -- Select this to manage the data retention policies for the selected monitor. See Retention Policies for details.

Delete -- Removes the selected monitor.

Expanded Resource Monitor

This screen appears when you click the plus in the upper right corner of the summary screen.

As in most expanded views, this one displays a list ordered by the Name of the monitor. Click Settings to configure the column display. Available columns include those on the summary screen (Name, Enabled, Monitor Type) as well as Description, Poling Interval, Target Count and Retention Policy.

Resource Monitor Snap Panels

When you select a monitor, the Snap Panels at the bottom of the screen display details about it. The Reference Tree shows the selected monitor’s connection to attributes, groups, retention policies and its membership (the devices monitored).

The Details Snap Panel displays the attributes the popup shows when you hover the cursor over the Monitor Type column in the summary screen, and adds Emit Availability (events), Retain Availability, Retain Polled Data, and Retain Calculated Data parameters.

The Monitor Status Summary Snap Panel displays the status of each individual member (Target) of the monitor, showing the Last Polled time and date, and a title bar and icon indicating Availability (green is available, red is not).

Hover the cursor over the Availability icon, and a popup appears with details about availability. If the device is available, the RTT (round-trip time) for communication appears in Avg (average), Max (maximum), and Min (minimum) amounts, along with the PacketCount. If it is not, an Error Message appears instead of the RTT and PacketCount parameters.

To edit more performance settings and targets than are available here, use the features described in Dashboard Views. You can create and display dashboards by right-clicking items in Managed Resources, selecting Show Performance.

Excluding Attributes from Display

The show.perf.exclude property in the file contains a comma delimited list of the attribute display names to exclude from display. Remember, best practice is to override properties as described in Overriding Properties.

For example,

show.perf.exclude=CPU Utilization,AvgRTT

If you define this property, the Show Performance command creates charts for the listed attributes. This has no impact on manually created dashboards.

You must restart tomcat after changing the properties file for the changes to take effect.