This blogspace is meant to be a one-stop shop for anybody wanting to learn about HP Load runner.
LoadRunner is HP’s tool for application performance testing.LoadRunner stresses your entire application to isolate and identify potentialclient, network, and server bottlenecks. LoadRunner enables you to test yoursystem under controlled and peak load conditions.
When i started load runner i dont know from where to start. So i thought of posting my experiences to beginners. My intention here is to collate the useful information on Loadrunner scattered all over the web.
Performance Testing
Performance Tests are tests that determine end to end timing (benchmarking) of various time critical business processes and transactions, while the system is under low load, but with a production sized database. This sets ‘best possible’ performance expectation under a given configuration of infrastructure. It also highlights very early in the testing process if changes need to be made before load testing should be undertaken. For example, a customer search may take 15 seconds in a full sized database if indexes had not been applied correctly, or if an SQL 'hint' was incorporated in a statement that had been optimized with a much smaller database. Such performance testing would highlight such a slow customer search transaction, which could be remediated prior to a full end to end load test.
Loadrunner works by creating Virtual Users who act like Real time users on client software.
Scripts are recorded by using Vugen (Virtual User script Generator). It generators c Language script code.
By using controller we can design the scenarios. we can specify on controller how many virtual users u want to test the software. The loadrunner generators/injectors are started or stopped by using controller. During the run the status of each machine is monitored by controller.
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