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ISTQB Certified Tester: Performance Testing (CT-PT) · ISTQB
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- Little's Law states L = λW, where L is the average number of items in the system, λ is the arrival rate, and W is the average time spent in the system. In performance testing it relates concurrent users (L), throughput (λ), and total response time including think time (W). It is fundamental for workload modeling.