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man: Write man page for systemd-bootchart(1)

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Mostly coppied from bootchart.conf(5)
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William Giokas 2013-02-13 03:38:49 -06:00 committed by Zbigniew Jędrzejewski-Szmek
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commit 5797606612
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man/systemd-bootchart.xml
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@ -10,6 +10,7 @@
Authors:
Auke Kok <auke-jan.h.kok@intel.com>
William Giokas <1007380@gmail.com>
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
@ -91,9 +92,94 @@
<refsect1>
<title>Options</title>
<para>Please read systemd-bootchart --help or the bootchart.conf manual
page for information about the various options that influence how
systemd-bootchart operates.</para>
<variablelist class='bootchart-directives'>
<varlistentry>
<term><option>-n</option></term>
<term><option>--sample N</option></term>
<listitem><para>Specify the amount of samples to
record total before bootchart exits. Each sample will
record at intervals defined by --freq.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-f</option></term>
<term><option>--freq N</option></term>
<listitem><para>Specify the sample log frequency.
This can be a fractional number, but must be larger than
0.0. Most systems can cope with values under 25-50 without
impacting boot time severely.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-r</option></term>
<term><option>--rel</option></term>
<listitem><para>Use relative times instead of absolute
times. This is useful for using bootchart at post-boot
time to profile an already booted system, otherwise the
graph would become extremely large. If set, the
horizontal axis starts at the first recorded sample
instead of time=0.0.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-F</option></term>
<term><option>--filter</option></term>
<listitem><para>Disable filtering of tasks tasks that
did not contribute significantly to the boot. Processes
that are too short-lived (only seen in one sample) or
that do not consume any significant CPU time (less than
0.001sec) will not be displayed in the output graph.
</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-o</option></term>
<term><option>--output [path]</option></term>
<listitem><para>Configures the output folder for writing
the graphs. By default, bootchart writes the graphs to
<filename>/var/log</filename>.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-i</option></term>
<term><option>--init [path]</option></term>
<listitem><para>Set init binary to run. Defaults to
<filename>/sbin/init</filename>.
</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-p</option></term>
<term><option>--pss</option></term>
<listitem><para>Enable logging and graphing
of processes PSS memory consumption.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-e</option></term>
<term><option>--entropy</option></term>
<listitem><para>Enable logging and graphing
of the kernel random entropy pool size.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-x</option></term>
<term><option>--scale-x N</option></term>
<listitem><para>Horizontal scaling factor for all variable
graph components.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-y</option></term>
<term><option>--scale-y N</option></term>
<listitem><para>Vertical scaling factor for all variable
graph components.</para></listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>