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Future-Proof Your Applications: Avoid Breakdowns With Cgroup Changes! - Kamalesh Babulal & Tom Hromatka, Oracle Corporation

cgroup v2 is now the default resource management system in modern Linux kernels, container runtimes, and orchestration platforms. Migrating from cgroup v1 to cgroup v2 is essential for improving resource management but migrating from v1 risks potential outages, performance regressions, and hidden legacy dependencies. In this session, we'll provide a concise introduction to cgroups, showing how cgroup v1 evolved into cgroup v2.

We’ll cover actionable strategies for a smooth transition, including how to replace v1-only features, leverage systemd’s delegation capabilities and redesign hierarchies for the unified cgroup v2 model. You’ll also learn how to use tools like libcgroup and systemd for effective management, along with best practices for migration.

Additionally, we’ll highlight cgroup v2’s key features, such as Pressure Stall Information (PSI) for detecting resource contention, memory QoS controls to prevent OOM kills, and other advanced capabilities.

Attendees will leave with practical insights into cgroup v2’s technical details, tools for debugging, and observability, ensuring your applications are future-proofed in the evolving Linux resource management landscape.