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1.2 Testing methodology
Because the goal of this paper is to evaluate Message Broker service availability,
we obtained measurements from both the Message Broker and the application
that was using the Message Broker. The WebSphere Business Integration
Broker - Sniff test and performance on z/OS (IBM Category 2 SupportPac IP13)
provided an elegant solution. For details on downloading the SupportPac, see:
http://www-306.ibm.com/software/integration/support/supportpacs/
Note: We recommended that you install the most current version of the
SupportPac before using the techniques described in this paper.
SupportPac IP13 consists of documentation, programs, and message flows
designed to help you measure application throughput on Message Broker on
z/OS. SupportPac IP13 provides statistics at the end of the job, including the
total number of round trip messages that the SupportPac IP13 application
processed. You can find the specific SupportPac IP13 parameters that we used
for testing in Chapter 4, “Failover scenarios” on page 33. We ran the application
on both LPARs during several of the tests to simulate a realistic production
environment.
Figure 1-2 on page 6 illustrates our testing environment topology.
Chapter 1. Introduction and technical overview 5