The Stress testing reference article from the English Wikipedia on 24-Jul-2004
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Stress testing

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Stress testing is a form of testing which is used to determine the stability of a given system or entity. It often involves testing something beyond its normal operational capacity in order to observe the results. For example, a web server may be stress tested using scripts, bots and various denial of service tools. Also see testing.

Cardiac stress testing is used to identify possible problems with the heart.