15.2. Configuring HTTP Response Time Metrics

Configuring response time metrics is in some respects analogous to configuring events. The JBoss ON agent polls certain log files kept by the web server to identify the performance times for different resources served by the web server.

Install the response time filter for the Apache or Tomcat server. For Apache, simply install the filters; for Tomcat, there is additional configuration required to set up the filter entry in the web.xml file.
Click the Inventory tab in the top menu.
Select the Servers menu table on the left, and then navigate to the web server
Click the Connection Settings tab on the web server resource entry. and scroll to the Response Time configuration section.
Configure the response time properties for the web server. The agent has to know what log file the web server uses to record response time data.
Optionally, the server can perform certain transformations on the collected data.
- The response times log records times for all resources the web server serves, including support files like CSS files and icons or background images. These resources can be excluded from the response time calculations in the Response Time Url Excludes field.
- The same page can be accessed with different parameters passed along in the URL. The Response Time Url Transforms field provides a regular expression that can be used to strip or substitute the passed parameters.
Click the Save button.
Click the Monitoring tab on the web server resource entry.
Click the Schedules subtab.
Select the HTTP Response Time metric. This metric is the calltime type.
Click the Enable at the bottom of the list.