Stress Testing in Software Engineering

Stress testing is an essential part of software testing that checks how a system behaves under extreme conditions. Unlike load testing, which looks at normal usage, stress testing pushes the system beyond its limits to see how it handles heavy stress. This helps find the breaking point, performance drops, and recovery abilities of the system.

Stress testing ensures that applications stay stable and functional during unexpected high-stress situations, preventing crashes and ensuring reliability.

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About Stress Testing

  • Stress testing is also known as “Endurance Testing”.
  • Stress testing is a type of performance testing that evaluates the system’s reliability and stability.
  • It checks that how the system works under the load conditions ( normal and at peak point). This testing ensure that system would not crash under critical situations.
  • The main aim of the stress testing is to find the limit at which the system or software or hardware breaks.
  • This testing tests on the normal operating point and also at the high load point and tests how the system behave at those heavy points.
  • Software testers performed this testing to ensure that system’s performance/ behavior and working under load and stress conditions.
  • It determines the breaking point of the system, that is just before its system’s crash.
  • For example, Notepad is under stress and gives ‘Not Responded’ error message if 5GB data is copied from the website and pasted in notepad.

Need of Stress Testing

  • To evaluate the system behavior under abnormal or heavy conditions.
  • Showing appropriate error message when the system or application is under stress.
  • To analyze the behavior of the system after failure. 
  • To recover the system after failure.
  • System failure could result in enormous revenue loss under various abnormal conditions.  
  • To verify if unexpected failures do not cause security issues.
  • To ensure that data is saved before the system’s crash.

Stress Testing Tools : 

  • LoadRunner
  • Jmeter
  • Neo load
  • Site Blaster
  • Database Benchmark
  • Tsung
  • Stress Tester
  • Locust

Advantages of Stress Testing :

  • It helps to find the deadlocks in the software system.
  • This testing ensure the system’s performance  under load and stress conditions.
  • To find application bugs that surface under abnormal conditions.
  • This testing make sure that security vulnerabilities are not disclosed by load and stressful conditions.
  • Software crash-proof software system are made by using this testing.
  • This testing can provide the data that is hard to find anywhere.

Disadvantages of Stress Testing :

  • This testing can not all possible scenario of testing.
  • It only measures the overall response of the system to various stress scenarios rather than measuring and monitoring it.
  • It contains limited scope and sensitivity.
  • Stress testing can be time-consuming.