Tag
latency-measurement
- Sep 30, 2026 Coordinated Omission and the Samples a Closed Loop Never Takes How a benchmark that waits for each response before issuing the next one systematically excludes the worst delays from its own histogram, and the interval-based correction that recovers them. performance engineering
- Jun 11, 2026 Coordinated Omission in Latency Measurement Why measuring response time only for completed requests hides the worst delays, how the bias arises, and which measurement schemes avoid it without inventing numbers. backend systems
- Apr 24, 2026 Means, Percentiles, and What a Tail Measurement Can Answer Why the mean and the p99 are answers to different questions, what a percentile of a pooled sample says about an individual request, and the sub-second window where percentile estimates become unstable. performance engineering
- Jun 4, 2024 Little's Law: Concurrency, Arrival Rate, and Time in System Why the identity L = λW holds without any assumption about the arrival distribution, how the choice of system boundary changes all three terms at once, and where the accounting breaks when requests are dropped or retried. performance engineering