LoadRunner Tutorial

Monitoring the Load Test

While creating load on an application, you want to see how the application

performs in real time and where potential bottlenecks exist. You use

LoadRunner’s suite of integrated monitors to measure the performance of

every single tier, server, and component of the system during the load test.

LoadRunner includes monitors for a variety of major backend system

components including Web, application, network, database, and ERP/CRM

servers.

1 View the default graphs.

By default, the Controller displays the Running Vusers, Transaction

Response Time, Hits per Second, and Windows Resources graphs. The first

three don’t require configuration. The Windows Resources monitor has

been configured for you for this test.

➤Running Vusers - whole scenario graph lets you monitor the number of

Vusers that are running at a given time. You can see that the Vusers

gradually start running at a rate of 2 Vusers every 1 minute.

 

In this example, you can see that after 5 minutes, the system starts to

encounter an increasing number of errors. These errors are caused by

timeouts due to degrading response times.

Note: It will take your scenario a few minutes to run. You can go back and

forth from the graphs to the Vusers as your scenario proceeds to display your

results online.

Analyzing Results

At the conclusion of the test run, LoadRunner provides an in-depth analysis

section composed of detailed graphs and reports. You can compare multiple

graphs by combining results from several scenarios. Alternatively, you can

use the Auto-correlate tool to merge all the graphs that contain data that

could have had an effect on the response time, to pinpoint what washappening at the moment the problem occurred. Using these graphs and

reports, you can easily identify the bottlenecks in your application, and

determine what changes need to be made to your system to improve its

performance. You will learn how to use the Analysis tool in Lesson 10,

“Analyzing Your Scenario.”

You can open the Analysis with the scenario results by selecting Results >

Result Settings or clicking the Analyze Results button. The results are saved

to the <LoadRunner installation>\Results\tutorial_demo_resdirectory.

Where To Go From Here

Now that you have discovered the power of LoadRunner’s automated testing

process, you are ready to learn how to build a load-testing script, design and

run your own test, and analyze the test results. The following lessons will

walk you through the process of achieving these results.