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-rw-r--r--man/systemd-analyze.xml32
1 files changed, 32 insertions, 0 deletions
diff --git a/man/systemd-analyze.xml b/man/systemd-analyze.xml
index 9f313d76f1..ae45bfcf31 100644
--- a/man/systemd-analyze.xml
+++ b/man/systemd-analyze.xml
@@ -34,6 +34,12 @@
<surname>Poettering</surname>
<email>lennart@poettering.net</email>
</author>
+ <author>
+ <contrib>Developer</contrib>
+ <firstname>Harald</firstname>
+ <surname>Hoyer</surname>
+ <email>harald@redhat.com</email>
+ </author>
</authorgroup>
</refentryinfo>
@@ -55,6 +61,9 @@
<command>systemd-analyze <arg choice="opt" rep="repeat">OPTIONS</arg> blame </command>
</cmdsynopsis>
<cmdsynopsis>
+ <command>systemd-analyze <arg choice="opt" rep="repeat">OPTIONS</arg> critical-chain </command>
+ </cmdsynopsis>
+ <cmdsynopsis>
<command>systemd-analyze <arg choice="opt" rep="repeat">OPTIONS</arg> plot <arg choice="opt">&gt; file.svg</arg></command>
</cmdsynopsis>
<cmdsynopsis>
@@ -88,6 +97,16 @@
be slow simply because it waits for the initialization
of another service to complete.</para>
+ <para><command>systemd-analyze critical-chain</command>
+ prints a tree of the time critical chain of units.
+ The time after the unit is active or started is printed
+ after the "@" character. The time the unit takes to
+ start is printed after the "+" character.
+ Note that the output might be misleading as the
+ initialization of one service might depend on socket
+ activation and because of the parallel execution
+ of units.</para>
+
<para><command>systemd-analyze plot</command> prints
an SVG graphic detailing which system services have
been started at what time, highlighting the time they
@@ -181,6 +200,19 @@
unit name must match one of given
values.</para></listitem>
</varlistentry>
+
+ <varlistentry>
+ <term><option>--fuzz=</option><replaceable>timespan</replaceable></term>
+
+ <listitem><para>When used in conjunction
+ with the <command>critical-chain</command>
+ command (see above), also show units, which
+ finished <replaceable>timespan</replaceable> earlier, than the
+ 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>
+ </varlistentry>
</variablelist>
</refsect1>