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May 25, 2026 · Operations
How to Pinpoint Disk I/O Bottlenecks on Linux with iostat and blktrace
This guide walks you through a step‑by‑step, non‑disruptive workflow for diagnosing high disk I/O on Linux servers using built‑in tools such as vmstat, iostat, iotop, pidstat, lsof and the low‑level tracer blktrace, then shows how to interpret the data, identify common root causes, apply targeted fixes, and verify improvements with fio benchmarks and continuous monitoring.
Linuxblktracedisk I/O
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