Run performance tests overview

After planning, designing and scheduling your performance test, you run it to create load on your application and to test its performance.

Performance Test Execution Flow

The following table explains the various stages of the test run flow.

Run stage


Start of run

At the start of the run, the Controller checks the test configuration information, invokes the applications that were selected to run with the test, and then distributes each Vuser script to its designated load generator. When the Vusers are ready, they start running their scripts.

During run

During the run, you can see a synopsis of the test and can also drill down to see which Vuser actions are causing the application problems.

Service Virtualization: During the run, specified virtualized services run instead of the actual services. You can update services during the test run.

The online graphs display performance data collected by the monitors. You use this information to isolate potential problem areas in your system.

End of run

The test run ends when all the Vusers have completed their scripts, when the duration runs out, or when you terminate it.

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Monitoring Performance Test Execution

Online monitors enable you to monitor performance test execution. During a test run, you can view graphs that display information about the load that Vusers generate on your web server and other applications. Performance Center displays this data in real-time during test execution.

At the conclusion of the performance test, you can use LoadRunner Analysis to view a summary and graphs of the data collected from these monitors during the test run. For detailed information on the available graphs, see the LoadRunner Help Center.

For a list of supported monitor types, see Monitor types.

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Analyzing Performance Test Results

LoadRunner Analysis lets you analyze performance test data off-line, from any computer on which Analysis is installed. You use Analysis to generate various graph views, merge graphs, drill down within graphs, change zoom level and granularity, and so forth.

Analysis integrates with Performance Center to let you analyze data collected during a performance test run. You can download raw results and sessions for analysis on a local machine. After analyzing the data, you can upload the analysis data (HTML and Rich reports) to Performance Center to share the results with other users.

For Analysis to access an ALM project, your version of Analysis must be properly configured, and be connected to Performance Center.

For information about how to work with Performance Center from within Analysis, see the LoadRunner Help Center.

For details about running performance tests, see Manage a performance test run.

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