Mastering Linux Kernel Development

Control groups (cgroups)

Cgroups are kernel mechanisms to restrict and measure resource allocations to each process group. Using cgroups, you can allocate resources such as CPU time, network, and memory.

Similar to the process model in Linux, where each process is a child to a parent and relatively descends from the init process thus forming a single-tree like structure, cgroups are hierarchical, where child cgroups inherit the attributes of the parent, but what makes is different is that multiple cgroup hierarchies can exist within a single system, with each having distinct resource prerogatives.

Applying cgroups on namespaces results in isolation of processes into containers within a system, where resources are managed distinctly. Each ...