When Linux Memory Accounting Goes Wrong

Dive into a comprehensive exploration of Linux memory accounting challenges in this 27-minute conference talk from SREcon21. Uncover the intricacies of debugging memory-related issues where hosts become inaccessible despite cgroup limitations. Explore the complexities of memory accounting in cgroups and learn how improper accounting can lead to catastrophic consequences for cohosted applications and host systems. Follow the speaker's journey through initial debugging, issue recurrence, and in-depth troubleshooting. Gain insights into memory accounting validation, specific case analysis, and effective mitigation strategies. Enhance your understanding of Linux system resource management and improve your ability to handle critical memory-related problems in production environments.

Intro
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Concepts
The Problem
Initial Debugging and Resolution (conto)
Issue recurrence
Troubleshooting (contd)
Memory accounting in cgroups
Validation
What happened in our Case
Mitigation
Conclusion