Linux Tech Enthusiast

Sep 22, 2026 · Fundamentals

Linux Kernel I/O Schedulers Explained: NOOP, CFQ, Deadline & Anticipatory

This article explains the four Linux kernel I/O schedulers—NOOP, CFQ, Deadline, and Anticipatory—detailing their mechanisms, queue structures, priority models, and optimal use cases for traditional disks versus SSDs, with specific latency thresholds and database workload recommendations.