Advanced – Non-Functional Testing
Time Behaviour – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
The degree to which response and processing times and throughput rates meet requirements when performing functions.
In simple words
How fast the system responds and how much it processes per second.
Exam tip
A performance-efficiency sub-characteristic in ISO 25010.
Related terms
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