Deepin Linux
Apr 22, 2026 · Fundamentals
Why Page Cache Is the Hidden Engine Behind Linux I/O Performance
The article explains how Linux’s page cache bridges memory and disk, detailing its read/write mechanisms, dirty page handling, pre‑read optimization, kernel parameters, and practical tuning tips for static file serving, databases, and logging, showing why mastering it is essential for performance.
Dirty PagesI/O PerformanceKernel
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