Coordinated omission
Coordinated omission is a measurement bias in which a workload generator or sampler misses observations because its activity depends on the slow responses being measured.
A correct histogram of issued requests need not describe independent arrivals; synthetic correction must state its expected-interval assumption.
Relations
- related
- open-loop-load, closed-loop-load, latency-storage
Citations
- Gil Tene, wrk2: scheduled-arrival latency and coordinated omission; maintainer documentation, not an SSD benchmark.
- HdrHistogram maintainers: corrected versus raw value recording and expected sampling intervals.
- Hesela: synthetic arrival cohorts, timing boundaries and percentile pooling
- Hesela synthetic timing records: model parameters, full request cohorts and SHA-256 provenance