Performance testing
Checking how fast, stable and responsive the software is under different loads.
Definition
Performance testing measures speed, responsiveness and stability, for example load times, memory use and behavior with many users. It includes load testing and stress testing, which usually need tools. Manual testers still notice slow screens, lag and battery drain.
In practice
A news website loads in 1.5 seconds normally, but during a big event with thousands of visitors it takes 20 seconds or fails.
Learn it in context
Lessons that use this term.