Importance of load testing : Why we need it?
There are two main method of load testing, manual and automated. Manual Testing is very challenging, time and money consuming way: you should instruct a lot of real user coordinate users during the test. Automated testing is also not the complete solution at every test activity. It is useful in performance testing only. The experienced manual tester can find more bugs in the system than any other testing tools. There are also some proved facts which about
Because load testing is iterative in nature, tester must identify performance problems, tune the systems and retestto ensure that tuning has had a positive impact - countless times.For this reason, manual testing is not a very practical option as far as performance testing is concern, Now-a-days, automated load testing is the prefered choice for load testing a Web Applications.
By taking disciplined approach to load testing, business can optimize resources, as well as better predict hardware and software requirements, and set performance expectations to meet the end-user service level aggreements(SLAs). Automated Testing tools are more cost-effective and efficient solution than its manual counterparts. Plus, they minimize the risk of human error during the testing.
Using selective automated performance tool you can:
1) Replace manual testers with automated virtual users.
2) Simultaneously run many users on a single load generating machine.
3) Automatically measure transaction response times.
4) Easily repeat load scenarios and their respective scripts to validate design and performance changes.
5) We can check Users think time and their sessions details.
Some popular tools like WAPT, Neoload , JIRA, TestComplete and Load Runner have contribute their greate effort in valuable automated testing environment.
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