JVM File Descriptors Test

How often should the test be executed.

The host for which the test is to be configured.

The port number at which the specified host listens to.

This test can extract metrics from the Java application using either of the following mechanisms:

• Using the eg_btm.jar file available in the <eG_INSTALL_DIR>\lib\apm\java\default folder;
• Using SNMP-based access to the Java runtime MIB statistics;
• By contacting the Java runtime (JRE) of the application via JMX

To configure the test to collect metrics from the eg_btm.jar file, select the JAR option. On the other hand, to configure the test to use SNMP or JMX options, choose the Others option. By default, JAR option is chosen here.

This parameter appears only if the Metric Collection Type flag is set to JMX. Here, specify the port at which the JMX listens for requests from remote hosts. Ensure that you specify the same port that you configured in the management.properties file in the <JAVA_HOME>\jre\lib\management folder used by the target application . To know more, refer to Enabling JMX Support for JREtopic.

This parameter appears only if the mode is set to JMX. The JNDIname is a lookup name for connecting to the JMX connector. By default, this is jmxrmi. If you have resgistered the JMX connector in the RMI registery using a different lookup name, then you can change this default value to reflect the same. 

These parameters appear only if the Mode is set to JMX. If JMX requires authentication only (but no security), then ensure that the user and password parameters are configured with the credentials of a user with read-write access to JMX. To know how to create this user, refer to Configuring the eG Agent to Support JMX Authentication. Confirm the password by retyping it in the Confirm Password text box.

This parameter appears only if the Mode is set to JMX. This test uses a JMX Provider to access the MBean attributes of the target Java application and collect metrics. Specify the package name of this JMX Provider here. By default, this is set to com.sun.jmx.remote.protocol.

Specify the duration (in seconds) for which this test should wait for a response from the target Java application. If there is no response from the target beyond the configured duration, the test will timeout. By default, this is set to 240 seconds if the Mode is JMX, and 10 seconds if the Mode is SNMP.