Linux cgroups

1. Control Group v2

   Unified hierarchy, controllers, delegation and the cgroup2 filesystem.

2. Cgroup v1 index

   Legacy per-controller hierarchies.

3. Cgroup v1 memory controller

   Memory limits, accounting, swap and OOM control.

4. Cpusets

   Pinning tasks to CPUs and memory nodes.

5. CFS bandwidth control

   CPU quota and period throttling.

6. PSI pressure stall information

   Pressure stall metrics for CPU, memory and IO.

7. Cgroup v1 PIDs controller

   Limiting the number of processes in a cgroup.

8. Cgroup v1 blkio controller

   Proportional and throttled block IO control.

Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.