Read a load test report

Averages hide pain. This challenge gives you a short load test summary and asks what it really says about user experience.

Skills practised: Percentiles, Error rate analysis, Throughput

Sample summary

50 users, 10 min. Average 420 ms, p95 3,800 ms, error rate 4.2%, throughput 85 req/s, SLA: p95 under 1,000 ms and errors under 1%.

Does the run in the sample summary meet the SLA?

Yes, the average is only 420 msNo, both p95 and error rate exceed the SLANo, but only because of throughput

What does p95 = 3,800 ms mean?

95% of requests took 3,800 ms95% of requests finished in 3,800 ms or lessThe slowest request took 3,800 ms

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