systemd.slice

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## 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`.

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(7) 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

systemd(1), systemd.unit(5), systemd.resource-control(5), systemd.service(5), systemd.scope(5), systemd.special(7), systemd.directives(7)