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Overview of Memory Reclaim in the Current Upstream Kernel

Linux Plumbers Conference via YouTube

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Overview

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This talk explains memory reclaim in the current upstream Linux kernel, including page states, working-set detection, implementation, and reclaim decisions.

Syllabus

Introduction
What is memory reclaim
Different types of reclaim
Capturing all pages
How it works
State diagram
Theres a reclaim round
Page is active
Page is activated
Page on inactive list
Page table excess bits
Working set detection
Working set reclaim
Working set reclaim implementation
Nonmcg reclaim implementation
Corner case decisions
Fractional cost model
Advice reclaims
Conclusion
Multigenerational RRU
Summary

Taught by

Linux Plumbers Conference

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