Control Groups

Control Groups or cgroups is a Linux kernel feature that allows grouping different processes together so that they can be controlled together (freezing, snapshotting, terminating) or their resources can be limited, prioritized or monitored.

cgroups are used by programs such as systemd, Index of Docker, LXC, libvirt, etc.

Examples

• systemd uses cgroups for terminating child processes along with parents, where the association is not perfectly mapped in other init systems