Java Server Details Test
This test reports the performance statistics pertaining to the Java Virtual Machine (JVM) running on a Tomcat server.
Target of the test : A Tomcat server
Agent deploying the test : An internal agent
Outputs of the test : One set of results for the server being monitored.
| Parameter | Description |
|---|---|
|
Test Period |
How often should the test be executed. |
|
Host |
The host on which the Tomcat server is running. |
|
Port |
The port on which the specified Tomcat server is listening for HTTP requests. |
|
EGURI |
The Java Server Details test makes use of a file named EgPerfTest.jsp to generate measures. By default, this file is located in the <EG_INSTALL_DIR>/lib directory. To execute this test, move this file to one of the application directories of the Tomcat server. On Unix, you can execute the script /opt/egurkha/bin/setup_jserver to do this. While configuring this test, specify the location of the application directory where the EgPerfTest.jsp file resides, in the EGURI text box, in the following format: http://<Ipaddress:portNo/directory name>. For example, assume that the EgPerfTest.jsp is available in the JavaTest directory of the host 192.168.10.57:7077. Therefore, EGURI would be: http://192.168.10.57:7077/JavaTest. |
| Measurement | Description | Measurement Unit | Interpretation |
|---|---|---|---|
|
Active threads |
Indicates the number of active threads in the JVM. |
Number |
A high value for this measure is indicative of a high load on the JVM.
|
|
Total memory usage |
Indicates the total memory available in the JVM. |
MB |
A high value indicates a high processing capability of the JVM. Watch for increasing memory usage over time, which could indicate a memory leak in one or more applications hosted on the application server. |
|
Free memory |
Indicates the unused memory in the JVM. |
MB |
A very low value of free memory is an indication of high memory utilization on the JVM. |
