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56ba3c78ae
man rules were repeating the same information in too many places, which was error prone. Those rules can be easily generated from .xml files. For efficiency and because python is not a required dependency, Makefile-man.am is only regenerated when requested with make update-man-list If no metadata in man/*.xml changed, this file should not change. So only when a new man page or a new alias is added, this file should show up in 'git diff'. The change should then be committed. If the support for building from git without python was dropped, we could drop Makefile-man.am from version control. This would also increase the partial build time (since more stuff would be rebuild whenever sources in man/*.xml would be modified), so it would probably wouldn't be worth it.
160 lines
7.4 KiB
XML
160 lines
7.4 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?>
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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This file is part of systemd.
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Copyright 2012 Intel Corporation
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Authors:
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Auke Kok <auke-jan.h.kok@intel.com>
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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-->
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<refentry id="bootchart.conf" conditional='ENABLE_BOOTCHART'>
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<refentryinfo>
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<title>bootchart.conf</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Auke</firstname>
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<surname>Kok</surname>
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<email>auke-jan.h.kok@intel.com</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>bootchart.conf</refentrytitle>
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<manvolnum>5</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>bootchart.conf</refname>
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<refpurpose>Boot performance analysis graphing tool configuration file</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>/etc/systemd/bootchart.conf</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>When starting, systemd-bootchart will read the
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configuration file <filename>bootchart.conf</filename>.
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This configuration file determines logging parameters and
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graph output.</para>
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</refsect1>
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<refsect1>
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<title>Options</title>
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<variablelist class='bootchart-directives'>
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<varlistentry>
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<term><varname>samples=500</varname></term>
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<listitem><para>Configure the amount of samples to
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record total before bootchart exits. Each sample will
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record at intervals defined by freq=.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>freq=25</varname></term>
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<listitem><para>Configure the sample log frequency.
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This can be a fractional number, but must be larger than
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0.0. Most systems can cope with values under 25-50 without
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impacting boot time severely.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>rel=0</varname></term>
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<listitem><para>Configures whether the left axis of the
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output graph equals time=0.0 (CLOCK_MONOTONIC start). This
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is useful for using bootchart at post-boot time to profile
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an already booted system, otherwise the graph would become
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extremely large. If set to a non-zero value, the horizontal
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axis starts at the first recorded sample instead of time=0.0.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>filter=0</varname></term>
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<listitem><para>Configures whether the resulting graph
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should omit tasks that did not contribute significantly
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to the boot. Processes that are too short-lived (only
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seen in one sample) or that do not consume any significant
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CPU time (less than 0.001sec) will not be displayed in
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the output graph.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>output=[path]</varname></term>
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<listitem><para>Configures the output folder for writing
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the graphs. By default, bootchart writes the graphs to
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<filename>/var/log</filename>.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>init=[path]</varname></term>
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<listitem><para>Configures bootchart to run a non-standard
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binary instead of <filename>/sbin/init</filename>. This
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option is only relevant if bootchart was invoked from the
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kernel command line with
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init=/usr/lib/systemd/systemd-bootchart.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>pss=0</varname></term>
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<listitem><para>If set to 1, enables logging and graphing
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of processes PSS memory consumption.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>entropy=0</varname></term>
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<listitem><para>If set to 1, enables logging and graphing
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of the kernel random entropy pool size.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>scale_x=100</varname></term>
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<listitem><para>Horizontal scaling factor for all variable
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graph components.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>scale_y=20</varname></term>
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<listitem><para>Vertical scaling factor for all variable
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graph components.</para></listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd-bootchart</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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