This tutorial will guide you through an example of how to set up service
component event monitors that are published to the Performance Monitoring
Infrastructure (PMI), and how to view the resulting performance statistics
on the Tivoli® Performance
Viewer (TPV). This exercise will demonstrate how performance monitoring of
service component event points differs from monitoring using the Common Event Infrastructure (CEI)
server and loggers. The major difference that you will notice is that you
select an entire service component element for performance monitoring, instead
of individual events with specific natures. Because WebSphere® Process Server can monitor
performance only on service component elements having events with ENTRY, EXIT,
and FAILURE natures, you will have only those kinds of service component elements
available to you to select for monitoring.
While the service component event points ENTRY, EXIT, and FAILURE are identical
for all monitoring types, the process server performance monitoring function
fires "minimized" events that do not contain all of the information encompassed
in CEI events. These events are sent to the PMI, which calculates these performance
statistics from corresponding sets of events:
- Successful invocation — the firing of an event of nature type EXIT that
follows a corresponding ENTRY event.
- Failed invocation — the firing of an event with a FAILURE nature following
a corresponding ENTRY event.
- Time for successful completion — the elapsed time between the firing an
ENTRY event and the firing of the corresponding EXIT event point.
The PMI publishes the statistics to the TPV, which presents cumulative
counters for the number of successful and failed invocations and a running
average of the completion response times.
Objectives of this tutorial
After completing this
tutorial you will be able to:
- Select the performance statistics of service component elements that you
want to monitor.
- View and interpret the resulting performance statistics.
Time required to complete this tutorial
This tutorial
requires approximately 15-20 minutes to complete.
Prerequisites
In order to perform this tutorial,
you must have:
- Configured and started a process server.
- Enabled the PMI on the process server.
- Installed and started the Samples Gallery application on the process server.
- Installed and started the business rules sample application on the process
server. Follow the instructions on the Samples Gallery page to set up and
run the business rules sample application.
After all of these prerequisites have been completed, run the business
rules sample application from the Samples Gallery at least once before proceeding
with the tutorial.