JD Tech Talk

Sep 21, 2020 · Operations

Investigation and Optimization of Ceph Slow‑Request Issues Related to Scrub in the Luminous Release

This article analyzes a frequent slow‑request problem in a Ceph cluster caused by heavy write‑induced RocksDB compaction combined with deep‑scrub activity, explains the underlying scrub mechanisms, and presents parameter‑tuning and custom scheduling strategies to mitigate performance impact while preserving data consistency.