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

Run stage	Description
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.

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. ALM Performance Center displays this data in real-time during test execution.

At the conclusion of the performance test, you can use HPE 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 HPE LoadRunner Analysis User Guide.

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

HPE 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 ALM 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 ALM Performance Center.

For information about how to work with ALM Performance Center from within Analysis, see the HPE LoadRunner Analysis User Guide.

For details about running performance tests, see How to Manage a Performance Test Run.