systemd.slice - Slice unit configuration
A unit configuration file whose name ends in ".slice" encodes
information about a slice unit. A slice unit is a concept for hierarchically
managing resources of a group of processes. This management is performed by
creating a node in the Linux Control Group (cgroup) tree. Units that manage
processes (primarily scope and service units) may be assigned to a specific
slice. For each slice, certain resource limits may be set that apply to all
processes of all units contained in that slice. Slices are organized
hierarchically in a tree. The name of the slice encodes the location in the
tree. The name consists of a dash-separated series of names, which describes
the path to the slice from the root slice. The root slice is named -.slice.
Example: foo-bar.slice is a slice that is located within foo.slice, which in
turn is located in the root slice -.slice.
Note that slice units cannot be templated, nor is possible to add
multiple names to a slice unit by creating additional symlinks to its unit
By default, service and scope units are placed in system.slice,
virtual machines and containers registered with systemd-machined(1)
are found in machine.slice, and user sessions handled by
systemd-logind(1) in user.slice. See systemd.special(5) for
See systemd.unit(5) for the common options of all unit
configuration files. The common configuration items are configured in the
generic "[Unit]" and "[Install]" sections. The slice
specific configuration options are configured in the "[Slice]"
section. Currently, only generic resource control settings as described in
systemd.resource-control(5) are allowed.
See the New Control Group Interfaces for an introduction
on how to make use of slice units from programs.
The following dependencies are implicitly added:
•Slice units automatically gain dependencies of
type After= and Requires= on their immediate parent slice
The following dependencies are added unless DefaultDependencies=no is
•Slice units will automatically have dependencies
of type Conflicts= and Before= on shutdown.target. These ensure
that slice units are removed prior to system shutdown. Only slice units
involved with late system shutdown should disable DefaultDependencies=
- New Control Group Interfaces