LLM Capacity Load Testing in Production: Finding Real Safe QPS with Timed Traces, Burstiness, and Tail-SLO Gates
LLM capacity testing shouldn't rely on fixed concurrency and average latency alone. This article combines vLLM, AIPerf, and MLPerf to explain Timed Traces, burst traffic, tail-latency gates, and Safe QPS — a production-grade method for finding the true capacity inflection point before launch.