SYSTEMD.SLICE(5)systemd.sliceSYSTEMD.SLICE(5)NAMEsystemd.slice - Slice unit configuration
SYNOPSIS
slice.slice
DESCRIPTION
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 file.
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 more information.
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[1] for an introduction on how to
make use of slice units from programs.
IMPLICIT DEPENDENCIES
The following dependencies are implicitly added:
· Slice units automatically gain dependencies of type After= and
Requires= on their immediate parent slice unit.
DEFAULT DEPENDENCIES
The following dependencies are added unless DefaultDependencies=no is
set:
· 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= option.
SEE ALSOsystemd(1), systemd.unit(5), systemd.resource-control(5),
systemd.service(5), systemd.scope(5), systemd.special(7),
systemd.directives(7)NOTES
1. New Control Group Interfaces
https://www.freedesktop.org/wiki/Software/systemd/ControlGroupInterface/
systemd 236SYSTEMD.SLICE(5)
