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2790N/A

2790N/A<refentry id="systemd.slice">

234N/A <refentryinfo>

234N/A <title>systemd.slice</title>

234N/A <productname>systemd</productname>

234N/A

618N/A <authorgroup>

234N/A <author>

234N/A <contrib>Developer</contrib>

844N/A <firstname>Lennart</firstname>

844N/A <surname>Poettering</surname>

234N/A <email>lennart@poettering.net</email>

1258N/A </author>

234N/A </authorgroup>

234N/A </refentryinfo>

234N/A

234N/A <refmeta>

234N/A <refentrytitle>systemd.slice</refentrytitle>

234N/A <manvolnum>5</manvolnum>

234N/A </refmeta>

234N/A

1938N/A <refnamediv>

1938N/A <refname>systemd.slice</refname>

2790N/A <refpurpose>Slice unit configuration</refpurpose>

2790N/A </refnamediv>

2790N/A

2790N/A <refsynopsisdiv>

2790N/A <para><filename><replaceable>slice</replaceable>.slice</filename></para>

2790N/A </refsynopsisdiv>

2790N/A

2790N/A <refsect1>

2790N/A <title>Description</title>

2790N/A

2790N/A <para>A unit configuration file whose name ends in

2790N/A <literal>.slice</literal> encodes information about a slice which

2790N/A is a concept for hierarchially managing resources of a group of

234N/A processes. This management is performed by creating a node in the

234N/A control group tree. Units that manage processes (primarilly scope

234N/A and service units) may be assigned to a specific slice. For each

234N/A slice, certain resource limits may the be set that apply to all

234N/A processes of all units contained in that slice. Slices are

2790N/A organized hierarchially in a tree. The name of the slice encodes

234N/A the location in the tree. The name consists of a dash-separated

234N/A series of names, which describes the path to the slice from the

234N/A root slice. The root slice is named,

234N/A <filename>-.slice</filename>. Example:

<filename>foo-bar.slice</filename> is a slice that is located

within <filename>foo.slice</filename>, which in turn is located in

the root slice <filename>-.slice</filename>.

</para>

<para>By default, service and scope units are placed in

<filename>system.slice</filename>, virtual machines and containers

registered with

<citerefentry><refentrytitle>systemd-machined</refentrytitle><manvolnum>1</manvolnum></citerefentry>

are found in <filename>machine.slice</filename>, and user sessions

handled by

<citerefentry><refentrytitle>systemd-logind</refentrytitle><manvolnum>1</manvolnum></citerefentry>

in <filename>user.slice</filename>. See

<citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>5</manvolnum></citerefentry>

for more information.</para>

<para>See

<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>

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

<citerefentry><refentrytitle>systemd.cgroup</refentrytitle><manvolnum>7</manvolnum></citerefentry> are allowed.

</para>

<para>Unless <varname>DefaultDependencies=false</varname>

is used, slice units will implicitly have dependencies of

type <varname>Conflicts=</varname> and

<varname>Before=</varname> on

<filename>shutdown.target</filename>. 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.

</para>

</refsect1>

<refsect1>

<title>See Also</title>

<para>

<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,

<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,

<citerefentry><refentrytitle>systemd.cgroup</refentrytitle><manvolnum>5</manvolnum></citerefentry>,

<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,

<citerefentry><refentrytitle>systemd.scope</refentrytitle><manvolnum>5</manvolnum></citerefentry>,

<citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>,

<citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>

</para>

</refsect1>

</refentry>