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NAME | SYNOPSIS | DESCRIPTION | AUTOMATIC DEPENDENCIES | OPTIONS | SEE ALSO | NOTES | COLOPHON |
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SYSTEMD.SLICE(5) systemd.slice SYSTEMD.SLICE(5)
systemd.slice - Slice unit configuration
slice.slice
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(8) are found in machine.slice, and user sessions
handled by systemd-logind(8) in user.slice. See
systemd.special(7) 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.
Slice unit files may include [Unit] and [Install] sections, which
are described in systemd.unit(5).
Slice files may include a [Slice] section. Options that may be
used in this section are shared with other unit types. These
options are documented in systemd.resource-control(5).
systemd(1), systemd.unit(5), systemd.resource-control(5),
systemd.service(5), systemd.scope(5), systemd.special(7),
systemd.directives(7)
1. New Control Group Interfaces
https://systemd.io/CONTROL_GROUP_INTERFACE
This page is part of the systemd (systemd system and service
manager) project. Information about the project can be found at
⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have
a bug report for this manual page, see
⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.
This page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2024-06-14. (At that
time, the date of the most recent commit that was found in the
repository was 2024-06-13.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
[email protected]
systemd 257~devel SYSTEMD.SLICE(5)
Pages that refer to this page: journalctl(1), systemd(1), systemd-nspawn(1), systemd-run(1), sd_bus_creds_get_pid(3), sd_pid_get_owner_uid(3), [email protected](5), systemd.resource-control(5), systemd.service(5), systemd.unit(5), [email protected](5), systemd.directives(7), systemd.index(7), systemd.special(7), systemd.syntax(7), pam_systemd(8)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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