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<span style="float:right">systemd 221</span><hr><div class="refentry"><a name="systemd.slice"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>systemd.slice — Slice unit configuration</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><p><code class="filename"><em class="replaceable"><code>slice</code></em>.slice</code></p></div><div class="refsect1"><a name="idm47590745458480"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description">¶</a></h2><p>A unit configuration file whose name ends in
"<code class="literal">.slice</code>" 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,
<code class="filename">-.slice</code>. Example:
<code class="filename">foo-bar.slice</code> is a slice that is located
within <code class="filename">foo.slice</code>, which in turn is located in
the root slice <code class="filename">-.slice</code>.
</p><p>By default, service and scope units are placed in
<code class="filename">system.slice</code>, virtual machines and containers
registered with
<a href="systemd-machined.html"><span class="citerefentry"><span class="refentrytitle">systemd-machined</span>(1)</span></a>
are found in <code class="filename">machine.slice</code>, and user sessions
handled by
<a href="systemd-logind.html"><span class="citerefentry"><span class="refentrytitle">systemd-logind</span>(1)</span></a>
in <code class="filename">user.slice</code>. See
<a href="systemd.special.html"><span class="citerefentry"><span class="refentrytitle">systemd.special</span>(5)</span></a>
for more information.</p><p>See
<a href="systemd.unit.html"><span class="citerefentry"><span class="refentrytitle">systemd.unit</span>(5)</span></a>
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
<a href="systemd.resource-control.html"><span class="citerefentry"><span class="refentrytitle">systemd.resource-control</span>(5)</span></a> are allowed.
</p><p>Unless <code class="varname">DefaultDependencies=false</code>
is used, slice units will implicitly have dependencies of
type <code class="varname">Conflicts=</code> and
<code class="varname">Before=</code> on
<code class="filename">shutdown.target</code>. 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.
</p></div><div class="refsect1"><a name="idm47590740495360"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p>
<a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>,
<a href="systemd.unit.html"><span class="citerefentry"><span class="refentrytitle">systemd.unit</span>(5)</span></a>,
<a href="systemd.resource-control.html"><span class="citerefentry"><span class="refentrytitle">systemd.resource-control</span>(5)</span></a>,
<a href="systemd.service.html"><span class="citerefentry"><span class="refentrytitle">systemd.service</span>(5)</span></a>,
<a href="systemd.scope.html"><span class="citerefentry"><span class="refentrytitle">systemd.scope</span>(5)</span></a>,
<a href="systemd.special.html"><span class="citerefentry"><span class="refentrytitle">systemd.special</span>(7)</span></a>,
<a href="systemd.directives.html"><span class="citerefentry"><span class="refentrytitle">systemd.directives</span>(7)</span></a>
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