Websphere: Using PerformanceMonitor Servlet to Monitor Performance Metric

The PerfServlet provides the performance data output as an XML document, The servlet provides a way to use an HTTP request to query the performance metrics for an entire WebSphere Application Server administrative domain.

First we need to deploy this servlet on (clustered) nodes  to be monitored before using it. The deployment is no way different than installing any EAR application file.

You can download and install PerfApp servlet from following links else visit IBM support portal
http://www.oracledbasupport.co.uk/wp-content/uploads/2010/09/perfServletApp.ear
http://www.oracledbasupport.co.uk/wp-content/uploads/2010/09/perfServletApp.war

http://%Server_name%:9080/wasPerfTool/servlet/perfservlet?module=beanModule+jvmRuntimeModule

Above URL will produce XML output file as  :http://www.oracledbasupport.co.uk/wp-content/uploads/2010/07/-1.xml

Locate perfServletApp.ear which is generally at installedApps directory under Profiles, goto deployment manager and install this ear file.

Access the performance matrix using URLs  below

Usage:

http://perfServlet_Host:port/wasPerfTool/servlet/perfservlet[?node=<node>&server=<server>&module=<module>]

The module name for which stats are displayed. Modules include the following:

alarmManagerModule

beanModule

cacheModule

connectionPoolModule

jvmRuntimeModule

j2cModule

objectPoolModule

orbPerfModule

schedulerModule

servletSessionsModule

systemModule

threadPoolModule

transactionModule

webAppModule

webServicesModule

wlmModule

wsgwModule

Node

The servlet can limit the information it provides to a specific host by using the node parameter.
http://Server1:9080/wasPerfTool/servlet/perfservlet?node=Server1_Node01

Server

The servlet can limit the information it provides to a specific server by using the server parameter.

For example, in order to limit the data collection to the server on all nodes, invoke the following URL:
http://Server1:9080/wasPerfTool/servlet/perfservlet?server=server_member1

To limit the data collection to the server invoke the following URL:
http://Server1:9080/wasPerfTool/servlet/perfservlet?node=Server1_Node01&server=server_member1

Module

The servlet can limit the information it provides to a specific PMI module by using the module parameter.
You can request multiple modules by using the following URL:
http://Server1:9080/wasPerfTool/servlet/perfservlet?module=beanModule+jvmRuntimeModule

For example, to limit the data collection to the beanModule on all servers and nodes, invoke the following URL:
http://Server1:9080/wasPerfTool/servlet/perfservlet?module=beanModule

To limit the data collection to the beanModule on the server ‘testserver’ on the node rjones, invoke the following URL:
http://Server1:9080/wasPerfTool/servlet/perfservlet?node=rjones&server=testserver&module=beanModule

To find the list of the modules, invoke the PerfServlet help with the following URL:
http://Server1:9080/wasPerfTool/servlet/perfservlet?action=help

http://Server1:9080/wasPerfTool/servlet/perfservlet?node=Server01_Node01&server=server_member1&module=jvmRuntimeModule