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Do You Know How to get performance data from WebSphere over http?


In such type of scenarios you can easily consume performance statistics from your WebSphere instance. The way is to establish a JMX connection to the JVM and gather the metrics.


However remote JMX connections are not firewall friendly as they require a non standard port for communication.This non standard port has also to be defined in the WebSphere configuration.


WebSphere provides a small and easy to install servlet applications that delivers performance data over http in a xml format.
The application is called PerfServletApp.ear, Performance Servlet or PerfServlet.


The installation is straight forward. Navigate to Applications > Application types > WebSphere enterprise applications > Install and deploy the PerfServletApp.ear located in <WebSphere-Install-Root>/installableApps/PerfServletApp.ear

After deployment the Performance Servlet is reachable under the URL






Filtering the results


The performance servlet provides a basic filter functionality for the xml results. To filter the results simply add parameters to the url. IBM defined serveral parameters:

  • Node: http://localhost:9082/wasPerfTool/servlet/perfservlet?node=Marcel-PCNode03

  • Server: http://localhost:9082/wasPerfTool/servlet/perfservlet?server=server1

  • Module (!): http://localhost:9082/wasPerfTool/servlet/perfservlet?module=testmodule1

  • etc.The filters can be combined:

  • http://localhost:9082/wasPerfTool/servlet/perfservlet?node=Marcel-PCNode03&server=server1&module=jvmRuntimeModule+systemModule

The PerfServlet has a kind of man page:
http://localhost:9082/wasPerfTool/servlet/perfservlet?action=help


However the PerfServlet is limited and not really for use in large network deployment topology.


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