Linux Kernel Journey

Mar 23, 2025 · Fundamentals

Efficient Dynamic Memory Reclamation Techniques in Linux

The article provides an in‑depth technical analysis of Linux’s memory reclamation system, covering zones, watermarks, page flags, LRU lists, the shrink_zone workflow, kswapd, direct reclaim, OOM handling, page‑cache structures, and practical tuning tips for optimal performance.