Using OpenTelemetry’s Exponential Histograms in Prometheus
Talkat Observability Day Europe 2023 · on Tuesday, 2023-04-18· at 10:50· Hall 7, Room E | Ground Floor | Europe Complex·
summary
Explains how OpenTelemetry’s dense representation exponential histograms map to Prometheus’s sparse representation native histograms, with concrete encoding (offsets, spans, delta counts) and a working translation implemented in the OTLP collector’s Prometheus remote_write exporter. Shows the indexing mismatch, how to downscale buckets, and the practical rule scale limits -4..8 (below -4 currently drops, above 8 must downscale). Demonstrates storage and accuracy gains and a tested translation path.
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chapters (7)
- 0:00Introduction
- 3:30Exponential Buckets
- 7:11Exponential Histograms
- 10:53Prometheus Native Histograms
- 13:53Translation
- 18:39System Setup
- 20:09Questions
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