<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">dot</arg>
<arg choice="opt" rep="repeat"><replaceable>PATTERN</replaceable></arg>
+ <arg choice="opt">> file.dot</arg>
+ </cmdsynopsis>
+ <cmdsynopsis>
+ <command>systemd-analyze</command>
+ <arg choice="opt" rep="repeat">OPTIONS</arg>
+ <arg choice="plain">dump</arg>
+ </cmdsynopsis>
+ <cmdsynopsis>
+ <command>systemd-analyze</command>
+ <arg choice="opt" rep="repeat">OPTIONS</arg>
+ <arg choice="plain">set-log-level</arg>
+ <arg choice="opt"><replaceable>LEVEL</replaceable></arg>
</cmdsynopsis>
</refsynopsisdiv>
<title>Description</title>
<para><command>systemd-analyze</command> may be used
- to determine system boot-up performance of the current
- boot.</para>
+ to determine system boot-up performance statistics and
+ retrieve other state and tracing information from the
+ system and service manager.</para>
<para><command>systemd-analyze time</command>
prints the time spent in the kernel before
userspace has been reached, the time spent in the
initial RAM disk (initrd) before normal system
- userspace has been reached and the time normal system
+ userspace has been reached, and the time normal system
userspace took to initialize. Note that these
measurements simply measure the time passed up to the
point where all system services have been spawned, but
of another service to complete.</para>
<para><command>systemd-analyze critical-chain [<replaceable>UNIT...</replaceable>]</command>
- prints a tree of the time critical chain of units
+ prints a tree of the time-critical chain of units
(for each of the specified <replaceable>UNIT</replaceable>s
or for the default target otherwise).
The time after the unit is active or started is printed
been started at what time, highlighting the time they
spent on initialization.</para>
- <para><command>systemd-analyze dot</command> Generate
+ <para><command>systemd-analyze dot</command> generates
textual dependency graph description in dot format for
further processing with the GraphViz
<citerefentry><refentrytitle>dot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
dot | dot -Tsvg > systemd.svg</command> to generate a
graphical dependency tree. Unless
<option>--order</option> or <option>--require</option>
- is passed the generated graph will show both ordering
+ is passed, the generated graph will show both ordering
and requirement dependencies. Optional pattern
globbing style specifications
(e.g. <filename>*.target</filename>) may be given at
any of these patterns match either the origin or
destination node.</para>
- <para>If no command is passed <command>systemd-analyze
+ <para><command>systemd-analyze dump</command> outputs
+ a (usually very long) human-readable serialization of
+ the complete server state. Its format is subject to
+ change without notice and should not be parsed by
+ applications.</para>
+
+ <para><command>systemd-analyze set-log-level
+ <replaceable>LEVEL</replaceable></command> changes the
+ current log level of the <command>systemd</command>
+ daemon to <replaceable>LEVEL</replaceable> (accepts
+ the same values as <option>--log-level=</option>
+ described in
+ <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>).</para>
+
+ <para>If no command is passed, <command>systemd-analyze
time</command> is implied.</para>
</refsect1>
manager.</para></listitem>
</varlistentry>
+ <varlistentry>
+ <term><option>--system</option></term>
+
+ <listitem><para>Shows performance data
+ of the system manager. This is the
+ implied default.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-H</option></term>
+ <term><option>--host=</option></term>
+
+ <listitem><para>Execute the operation
+ remotely. Specify a hostname, or
+ username and hostname separated by
+ <literal>@</literal>, to connect
+ to. This will use SSH to talk to the
+ remote machine manager
+ instance.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-M</option></term>
+ <term><option>--machine=</option></term>
+
+ <listitem><para>Execute the operation on a
+ local container. Specify a container
+ name to connect to.</para></listitem>
+ </varlistentry>
+
<varlistentry>
<term><option>--order</option></term>
<term><option>--require</option></term>
<command>dot</command> command (see
above), selects which dependencies are
shown in the dependency graph. If
- <option>--order</option> is passed
+ <option>--order</option> is passed,
only dependencies of type
<varname>After=</varname> or
<varname>Before=</varname> are
shown. If <option>--require</option>
- is passed only dependencies of type
+ is passed, only dependencies of type
<varname>Requires=</varname>,
<varname>RequiresOverridable=</varname>,
<varname>Requisite=</varname>,
<varname>RequisiteOverridable=</varname>,
<varname>Wants=</varname> and
<varname>Conflicts=</varname> are
- shown. If neither is passed, shows
+ shown. If neither is passed, this shows
dependencies of all these
types.</para></listitem>
</varlistentry>
<listitem><para>When used in
conjunction with the
<command>dot</command> command (see
- above), selects which relationships
+ above), this selects which relationships
are shown in the dependency graph.
They both require
<citerefentry><refentrytitle>glob</refentrytitle><manvolnum>7</manvolnum></citerefentry>
patterns as arguments, which are
- matched against lefthand and
- righthand, respectively, nodes of a
+ matched against left-hand and
+ right-hand, respectively, nodes of a
relationship. Each of these can be
- used more than once which means a
- unit name must match one of given
+ used more than once, which means a
+ unit name must match one of the given
values.</para></listitem>
</varlistentry>
latest unit in the same level. The unit of
<replaceable>timespan</replaceable> is seconds
unless specified with a different unit,
- i.e. "50ms".</para></listitem>
+ e.g. "50ms".</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>--no-pager</option></term>
+
+ <listitem>
+ <para>Do not pipe output into a pager.</para>
+ </listitem>
</varlistentry>
</variablelist>
<para>This plots the dependencies between all known target units:</para>
- <programlisting>systemd-analyze dot --to-pattern='*.target' --from-patter='*.target' | dot -Tsvg > targets.svg
+ <programlisting>systemd-analyze dot --to-pattern='*.target' --from-pattern='*.target' | dot -Tsvg > targets.svg
$ eog targets.svg</programlisting>
</refsect1>
+ <refsect1>
+ <title>Environment</title>
+
+ <variablelist class='environment-variables'>
+ <varlistentry>
+ <term><varname>$SYSTEMD_PAGER</varname></term>
+
+ <listitem>
+ <para>Pager to use when <option>--no-pager</option> is not
+ given; overrides <varname>$PAGER</varname>. Setting this to
+ an empty string or the value <literal>cat</literal> is
+ equivalent to passing
+ <option>--no-pager</option>.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
<refsect1>
<title>See Also</title>
<para>
~ianmdlvl / elogind.git / blobdiff