Basics of Performance Testing
Why there is a need of Performance or Load testing of an application:
- Does the application response time is adequate as expected by the intended users?
- How the application will handle the expected and unexpected user loads?
- How the application will handle the expected and unexpected transactions required by the business?
- To check the stability of application under heavy loads?
Difference between Functional Testing and Load Testing:
- Functional testing - to check the functionality – To check the functionality of business processes
- Load / Performance testing - to check Stability, Performance, Functionality under load. Examples:
- Will 1000 concurrent hits crash the server or application?
- Is response time is as per the specifications?
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Performance Testing types:
- Component Testing - To find the performance of each component / tier.
- Load Testing - To find out whether the system can handle the expected load upon deployment in production environment.
- Stress Testing - It is performed to find the breaking point of the application. It is a type of testing that measures whether the application’s environment is properly configured to handle expected or unexpected high transaction volumes.
- Volume Testing - To check the stability of the system / application / server with underĀ large amount of data over extended time periods.
Benefits / Objectives of Performance Testing:
- To calculate the application Response Time.
- To access the stability of the application.
- To find out which configuration provides the best performance results.
- Capacity Planning – to identify degradation point in performance.
- Acceptance – To find out whether the system is acceptable under heavy volums, loads and stress
- Bottleneck Identification – To identify the bottlenecks in the application
- To identify best platform for the application.
Commonly used Load Testing Tools:
- LoadRunner – HP
- e-Load – Emprix
- Silk Performer – Borland
- QALoad – Compuware
- Rational Performance Tester – IBM Rational
- Web Load – Radview
- Neo Load – Neotys
- Open STA – It is an Open Source tool
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Categories: Basics


Hello sir,
I am new to load runner, can you share some video tutorial or pdf with me, please