Performance Testing Concepts: Performance testing is a class of tests implemented and executed to characterize and evaluate the performance related characteristics of the target-of-test such as the timing profiles, execution flow, response times, and operational reliability and limits.

Different types of performance tests, each focused on a different test objective are implemented throughout the software development life cycle (SDLC). Early, in the architecture iterations, performance tests are focused on identifying and eliminating architectural-related performance bottlenecks.

In the construction iterations, additional types of performance tests are implemented and executed to tune the software and environment (optimizing response time and resources), and to verify that the applications and system acceptably handle high load and stress conditions, such as a large numbers of transactions, clients, and / or volumes of data.

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