WAS v8.5 > Monitoring > Monitoring application flow

Get performance data from request metrics

This topic describes how to enable request metrics.

Request metrics is a tool that enables you to track individual transactions, recording the processing time in each of the major WebSphere Application Server components.

We can enable request metrics from the following locations:

• The dmgr console. To enable request metrics in the dmgr console, refer to the instructions under the Steps for this task section that follows.
• Command line. JMX interfaces are exposed for enabling request metrics through external tools. For more details on the exposed interfaces, refer to the request metrics API documentation.

To enable request metrics in the dmgr console:

1. Open the dmgr console.

2. Click Monitoring and Tuning > Request Metrics in the console navigation tree.
3. Verify that Prepare servers for request metrics collection check box is selected. If Prepare servers for request metrics collection check box is not selected, you will have to select it, save the change, and restart the server.

4. Select All, None, or Custom under Components to be instrumented to specify the request metrics components. If you select Custom, be sure to select the components you would like to enable.

5. Specify the components that are instrumented by request metrics.
6. Specify how much data to collect.
7. Enable and disable logging.

8. Enable Application Response Measurement (ARM) Agent.

9. Specify which ARM type to use.

10. Specify the name of the ARM transaction factory implementation class.
11. Isolate performance for specific types of requests.
    1. Add and remove request metrics filters.

12. Click Apply or OK.

13. Click Save.

Results

The request metrics is enabled.

To ensure the web server plug-in recognizes the changes you made for the request metrics configuration, follow the steps in Regenerating the web server plug-in configuration file, if logging time spent in the web server.

Subtopics

• Request metrics
  Use this page to enable request metrics, select the components that are instrumented by request metrics, set trace levels, enable standard logs, enable Application Response Measurement (ARM), specify the type of ARM agent, and specify the ARM transaction factory implementation class name.
• Application Response Measurement
  Request metrics information might be either saved to the log file for later retrieval and analysis, be sent to Application Response Measurement (ARM) agents, or both. Request metrics provides response time for each of the major WAS components through ARM APIs.
• Isolating performance for specific types of requests
  This topic describes how to enable request metrics filters.
• Specify how much data to collect
  This topic describes how to set the trace level to generate trace records in the dmgr console.
• Regenerating the web server plug-in configuration file
  This topic describes the steps to regenerate the web server plug-in configuration file after you modify the request metrics configuration.
• Enable and disable logging
  This topic describes how to enable and disable logging through the dmgr console.
• Request metrics
  Use this page to enable request metrics, select the components that are instrumented by request metrics, set trace levels, enable standard logs, enable Application Response Measurement (ARM), specify the type of ARM agent, and specify the ARM transaction factory implementation class name.
• Application Response Measurement
  Request metrics information might be either saved to the log file for later retrieval and analysis, be sent to Application Response Measurement (ARM) agents, or both. Request metrics provides response time for each of the major WAS components through ARM APIs.
• Isolating performance for specific types of requests
  This topic describes how to enable request metrics filters.
• Specify how much data to collect
  This topic describes how to set the trace level to generate trace records in the dmgr console.
• Regenerating the web server plug-in configuration file
  This topic describes the steps to regenerate the web server plug-in configuration file after you modify the request metrics configuration.
• Enable and disable logging
  This topic describes how to enable and disable logging through the dmgr console.

Related

Monitoring application flow
Why use request metrics?

+

Search Tips   |   Advanced Search