Cgroups

Cgroups, or control groups, provide an interface for controlling one or a group of processes, hence the name. They allow the control of several aspects of the group's use of resources. Resource utilization can be controlled using a limit (for example, by limiting memory usage). Cgroups also allow priorities to be set to give processes a greater or lesser share of time-bound resources, such as CPU utilization or I/O. Cgroups can also be used to snapshot (and restore) the state of running processes.