libcgroup-tools

Control groups management tools

NOTE - this release is not guaranteed to be backward compatible with previous releases! Libcgroup v3.1.0 adds systemd support to the libcgroup library. Users can now create systemd scopes via the libcgroup C APIs, command line tools, and (experimental) Python bindings. These scopes can be "delegated" (or not), which is systemd parlance for a cgroup hierarchy that is being managed by another entity. Systemd will not modify settings or processes within a delegated hierarchy. Note that libcgroup v3.1.0 is still capable of modifying cgroups and processes anywhere in the cgroup hierarchy, including the root cgroup and its children (which are owned by systemd). Modifying cgroups and processes owned by systemd is a violation of the cgroup single-writer rule, and systemd reserves the right to undo any changes made by other processes. The libcgroup team strongly discourages modifying systemd-managed cgroups - especially on production systems - but it can be useful during prototyping and on experimental systems. The initial release of the cgroups implementation was in Linux 2.6.24. Over time, various cgroup controllers have been added to allow the management of various types of resources. However, the development of these controllers was largely uncoordinated, with the result that many inconsistencies arose between controllers and management of the cgroup hierarchies became rather complex.