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Load testing
- 1. LOAD TESTING & LOAD RUNNER PRESENTATION BY: MUHAMMAD FAHEEM (BITF14M517) FAHAD MANSOOR (BITF14M518) SYEDA ZAINAB SAJJAD GILLANI (BITF14M520) ABDUL REHMAN (BITF14M521)
- 2. AGENDA What is Automation Testing Why Load Runner Supported Applications Architecture Load Runner Components Benefits of Automation for your company
- 3. WHAT IS AUTOMATION TESTING Automation Testing is the use of software to control the execution of tests, the comparison of actual outcomes to predicted outcomes, the setting up of test preconditions, and other test control and test reporting functions. Automation is the use of strategies, tools and artifacts that reduce the need of manual or human involvement or interaction in unskilled, repetitive or redundant tasks.
- 4. NEED OF AUTOMATION TESTING Automation testing is the best way to increase the effectiveness, efficiency and coverage of your software. Automated Testing Saves Time and Money Automated Testing Improves Accuracy Automated Testing Helps Developers and Testers Automated Testing Increases Test Coverage
- 5. LOAD TESTING Load testing is the process of putting demand on a software system or computing device and measuring its response. Load testing is performed to determine a system's behavior under both normal and anticipated peak load conditions. Load test: A load test enables you to measure response times, resource-utilization levels, and to identify your applications breaking point, assuming that the breaking point occurs below the peak load condition.
- 6. WHY LOAD RUNNER? Load Runner reduces the human resource requirement by replacing real human users with virtual users known as Vusers. Load Runner reduces the hardware requirements by running multiple Vusers in a single computer. Load Runner automatically records performance of application under test. LoadRunner provides graph and reporting options for the analysis of performance test results.
- 7. WHY LOAD RUNNER? Various kinds of delays can be identified using LoadRunner. During the test execution, LoadRunner monitors network and server resources continuously. Load Runner makes performance testing very easy LoadRunner tests are fully automated, you can easily repeat them as often as you need.
- 8. WHAT IS LOAD RUNNER? HP's (formerly Mercury's) load/stress testing tool for web and other applications. Supports a wide variety of application environments, platforms, databases. Load Runner enables you to test your system under controlled and peak load conditions.
- 9. SUPPORTED APPLICATIONS Applications using Microsoft .NET and Java Database servers such as Microsoft SQL Server and Oracle Internetworking protocols such as DNS, FTP and LDAP E-mail protocols including IMAP, MAPI, POP3 & SMTP Remote client technologies such as Citrix ICA and RDP.
- 10. ARCHITECTURE
- 11. HOW LOAD RUNNER WORKS Load Runner works by creating virtual users who take the place of real users operating client software sending requests using the HTTP protocol to web servers. Requests from many virtual user clients are generated by "Load Generators" in order to create a load on various servers under test The Controller controls load test runs based on "Scenarios" invoking compiled "Scripts" and associated "Run-time Settings".
- 12. HOW LOAD RUNNER WORKS Scripts are crafted using "Virtual user script Generator" (named "VU Gen) During runs, the status of each machine is monitored by the Controller. At the end of each run, the Controller combines its monitoring logs with logs obtained from load generators, and makes them available to the "Analysis" program, which can then create run result reports and graphs for Microsoft Word, Crystal Reports, or an HTML webpage browser.
- 13. LOAD RUNNER COMPONENTS Load Runner primarily is a 3 stage architecture : Virtual User Generator (VUGen) Controller Analyze
- 14. VIRTUAL USER GENERATOR Creates virtual users Scripts Recording Play back Generation
- 15. CONTROLLER The load is tested here. The Controller has two sections Design Section - Used to design the load testing scenario Run Section - Used to monitor scenarios which are in execution.
- 16. ANALYZER The executed script result is displayed in the analyzer. Analyzer section is used to observe reports and graphs, it would determine the performance of our recoded scenarios at different user load.
- 17. THINK TIME Think Time is the time taken by a user ( usually to think ) before user takes the next action.
- 18. HOW AUTOMATION TESTING CAN BE BENEFICIAL FOR YOUR COMPANY Manual testing is time-consuming or costly. Automated business processes. Reduced test cycle time: Since automation testing tools run considerably faster than human users, this eventually leads to a considerably reduced test cycle time resulting in sustainable time savings.
- 19. REFERENCES http://en.wikipedia.org/wiki/Automation_Testing http://guru99.com/loadrunner-tutorials.html http://www.devbistro.com/articles/Testing/Role- ofTest-Automation-Engineer http://learnloadrunner.com/ http://www.geekinterview.com/ www.softwaretestinggenius.com
- 20. Q & A
- 21. THANK YOU