systemd/man/systemd.slice.xml
Jan Engelhardt fbce11397f man: wording and grammar updates
This includes regularly-submitted corrections to comma setting and
orthographical mishaps that appeared in man/ in recent commits.
2013-07-21 11:23:58 -04:00

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<refentry id="systemd.slice">
<refentryinfo>
<title>systemd.slice</title>
<productname>systemd</productname>
<authorgroup>
<author>
<contrib>Developer</contrib>
<firstname>Lennart</firstname>
<surname>Poettering</surname>
<email>lennart@poettering.net</email>
</author>
</authorgroup>
</refentryinfo>
<refmeta>
<refentrytitle>systemd.slice</refentrytitle>
<manvolnum>5</manvolnum>
</refmeta>
<refnamediv>
<refname>systemd.slice</refname>
<refpurpose>Slice unit configuration</refpurpose>
</refnamediv>
<refsynopsisdiv>
<para><filename><replaceable>slice</replaceable>.slice</filename></para>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>A unit configuration file whose name ends in
<literal>.slice</literal> encodes information about a slice which
is a concept for hierarchially managing resources of a group of
processes. This management is performed by creating a node in the
control group tree. Units that manage processes (primarilly scope
and service units) may be assigned to a specific slice. For each
slice, certain resource limits may the be set that apply to all
processes of all units contained in that slice. Slices are
organized hierarchially 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,
<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>