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-<?xml version='1.0'?> <!--*-nxml-*-->
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
- "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-
-<!--
- This file is part of systemd.
-
- Copyright 2012 Intel Corporation
-
- Authors:
- Auke Kok <auke-jan.h.kok@intel.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
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
--->
-
-<refentry id="bootchart.conf" conditional='ENABLE_BOOTCHART'
- xmlns:xi="http://www.w3.org/2001/XInclude">
- <refentryinfo>
- <title>bootchart.conf</title>
- <productname>systemd</productname>
-
- <authorgroup>
- <author>
- <contrib>Developer</contrib>
- <firstname>Auke</firstname>
- <surname>Kok</surname>
- <email>auke-jan.h.kok@intel.com</email>
- </author>
- </authorgroup>
- </refentryinfo>
-
- <refmeta>
- <refentrytitle>bootchart.conf</refentrytitle>
- <manvolnum>5</manvolnum>
- </refmeta>
-
- <refnamediv>
- <refname>bootchart.conf</refname>
- <refname>bootchart.conf.d</refname>
- <refpurpose>Boot performance analysis graphing tool configuration files</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <para><filename>/etc/systemd/bootchart.conf</filename></para>
- <para><filename>/etc/systemd/bootchart.conf.d/*.conf</filename></para>
- <para><filename>/run/systemd/bootchart.conf.d/*.conf</filename></para>
- <para><filename>/usr/lib/systemd/bootchart.conf.d/*.conf</filename></para>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Description</title>
-
- <para>When starting, systemd-bootchart will read the configuration
- file <filename>/etc/systemd/bootchart.conf</filename>, followed by
- the files in the <filename>bootchart.conf.d</filename>
- directories. These configuration files determine logging
- parameters and graph output.</para>
- </refsect1>
-
- <xi:include href="standard-conf.xml" xpointer="main-conf" />
-
- <refsect1>
- <title>Options</title>
-
- <variablelist class='bootchart-directives'>
-
- <varlistentry>
- <term><varname>Samples=500</varname></term>
- <listitem><para>Configure the amount of samples to record in
- total before bootchart exits. Each sample will record at
- intervals defined by Frequency=.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>Frequency=25</varname></term>
- <listitem><para>Configure 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><varname>Relative=no</varname></term>
- <listitem><para>Configures whether the left axis of the output
- graph equals time=0.0 (<constant>CLOCK_MONOTONIC</constant>
- start). 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 to yes, the horizontal axis
- starts at the first recorded sample instead of time=0.0.
- </para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>Filter=no</varname></term>
- <listitem><para>Configures whether the resulting graph should
- omit 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><varname>Output=[path]</varname></term>
- <listitem><para>Configures the output directory for writing
- the graphs. By default, bootchart writes the graphs to
- <filename>/run/log</filename>.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>Init=[path]</varname></term>
- <listitem><para>Configures bootchart to run a non-standard
- binary instead of
- <filename>/usr/lib/systemd/systemd</filename>. This option is
- only relevant if bootchart was invoked from the kernel command
- line with
- init=/usr/lib/systemd/systemd-bootchart.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>PlotMemoryUsage=no</varname></term>
- <listitem><para>If set to yes, enables logging and graphing of
- processes' PSS memory consumption.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>PlotEntropyGraph=no</varname></term>
- <listitem><para>If set to yes, enables logging and graphing of
- the kernel random entropy pool size.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>ScaleX=100</varname></term>
- <listitem><para>Horizontal scaling factor for all variable
- graph components.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>ScaleY=20</varname></term>
- <listitem><para>Vertical scaling factor for all variable graph
- components.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>ControlGroup=no</varname></term>
- <listitem><para>Display process control group.
- </para></listitem>
- </varlistentry>
-
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>See Also</title>
- <para>
- <citerefentry><refentrytitle>systemd-bootchart</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>
- </para>
- </refsect1>
-
-</refentry>