systemd.slice(5)



SYSTEMD.SLICE(5)                 systemd.slice                SYSTEMD.SLICE(5)

NAME
       systemd.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.

AUTOMATIC DEPENDENCIES
   Implicit Dependencies
       The following dependencies are implicitly added:

       o   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:

       o   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 ALSO
       systemd(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 245                                                   SYSTEMD.SLICE(5)

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