Advanced – Non-Functional Testing
Performance Efficiency – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
The performance relative to the amount of resources used under stated conditions (ISO/IEC 25010).
In simple words
How well the software performs given the CPU, memory, and bandwidth it consumes.
Exam tip
Covers time behaviour, resource utilisation, and capacity in ISO 25010.
Related terms
- Performance TestingHow fast, how many users, how stable under load — response time, throughput, resource usage.
- Capacity TestingFind the maximum load at which response times still meet targets.
- ISO/IEC 25010The reference model with 8 product quality characteristics and 5 quality-in-use characteristics.
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