systemd.slice
systemd
Developer
Lennart
Poettering
lennart@poettering.net
systemd.slice
5
systemd.slice
Slice unit configuration
slice.slice
Description
A unit configuration file whose name ends in
.slice encodes information about a slice which
is a concept for hierarchially managing resources of a group of
processes. This management is performed by creating a node in the
control group tree. Units that manage processes (primarilly scope
and service units) may be assigned to a specific slice. For each
slice, certain resource limits may the be set that apply to all
processes of all units contained in that slice. Slices are
organized hierarchially 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.
By default, service and scope units are placed in
system.slice, virtual machines and containers
registered with
systemd-machined1
are found in machine.slice, and user sessions
handled by
systemd-logind1
in user.slice. See
systemd.special5
for more information.
See
systemd.unit5
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 cgroup settings
as described in
systemd.cgroup7 are allowed.
Unless DefaultDependencies=false
is used, slice units will implicitly 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 early boot or
late system shutdown should disable this option.
See Also
systemd1,
systemd.unit5,
systemd.cgroup5,
systemd.service5,
systemd.scope5,
systemd.special7,
systemd.directives7