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Foglight for JMX 5.9.8 - User Guide

Foglight for JMX System Requirements Installing Foglight for JMX Managing JMX Agents Managing MBean Server Models Monitoring and Investigating JMX Data

Changing Metric Display Preferences

The Customize Metric Display dialog box opens.
The Metric Preferences dialog box opens.
5
Click OK to save your changes.
6
Click Close.

Changing Metric Display Order

You can also change the order in which the metrics appear in the Metrics pane, either manually, or by allowing the system to automatically arrange them.

The Customize Metric Display dialog box opens.
To manually arrange the metrics, click the blue arrows (located between the Type and Is Key Metric? columns) to move the metric up or down the list.
3
Click Close. The Metrics pane refreshes to list the metrics in the specified order.

Monitoring the Java Virtual Machine (JVM)

The JMX Explorer dashboard provides the name and status of the JVM, if it is available. You can access information about the JVM (such as heap usage and garbage collection) by clicking the JVM name at the top of the dashboard.

Figure 5. JMX Explorer

The JVM summary popup displays the JVM details, and two performance charts. To review the performance in detail, click the Heap Usage chart to open the Java Virtual Machine (JVM) Dashboard.

Reducing the Amount of Data Collected

Sometimes, the default JMX monitoring configurations provide you with too much data, which can lead to performance problems. One way to reduce data is to create server model instance overrides on a per-agent basis. This method allows you to collect a limited set of instances for an agent with a shared server model that is collecting data from all available instances by default, for example. With overrides at the agent level, you can include or exclude instances based on object name queries or regular expressions, or by selecting specific instances from a list. For more information, see Define Server Model Instance Overrides for a JMX Agent.

 

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