cgroups

Put a process on a resource budget.

In this interactive Linux lesson from Stencel Academy you don't just read — you type real commands like echo 40000 100000 > cpu.max, echo 256M > memory.max, hog and watch the machine respond on a live, animated map. It is part of the free How Linux Works course.

Before this lesson

Builds on: Namespaces.

What you'll practise

• cat /sys/fs/cgroup/app/memory.current — Live memory usage, in bytes.
• systemd-cgls — The cgroup tree.
• cat /sys/fs/cgroup/app/cpu.stat — How often the CPU valve clamped it.

Terms you'll learn

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