hard20 pts · first answer countsperformance-testingbottleneck-analysisscalability

More users, less throughput

Throughput peaks at 900 rps with 300 VUs, then drops to 650 rps at 600 VUs while CPU stays high. Profiling shows threads waiting on one shared lock. What is happening?

A.The load tool is miscounting requests above 300 VUsB.The system has spare capacity that is not being usedC.Higher think time is lowering throughputD.Contention on the lock wastes work, so throughput falls

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More users, less throughput

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