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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 which 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 it.

   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

   Slice units automatically gain dependencies of type After= and
   Requires= on their immediate parent slice unit.

   Unless DefaultDependencies=false is used in the "[Unit]" section, 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

   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
       http://www.freedesktop.org/wiki/Software/systemd/ControlGroupInterface/



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