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83fdc450 | 1 | <?xml version='1.0'?> <!--*-nxml-*--> |
83fdc450 | 2 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" |
12b42c76 | 3 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> |
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4 | |
5 | <!-- | |
6 | This file is part of systemd. | |
7 | ||
8 | Copyright 2012 Intel Corporation | |
9 | ||
10 | Authors: | |
11 | Auke Kok <auke-jan.h.kok@intel.com> | |
12 | ||
13 | systemd is free software; you can redistribute it and/or modify it | |
14 | under the terms of the GNU Lesser General Public License as published by | |
15 | the Free Software Foundation; either version 2.1 of the License, or | |
16 | (at your option) any later version. | |
17 | ||
18 | systemd is distributed in the hope that it will be useful, but | |
19 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
21 | Lesser General Public License for more details. | |
22 | ||
23 | You should have received a copy of the GNU Lesser General Public License | |
24 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
25 | --> | |
26 | ||
396f9e2b | 27 | <refentry id="bootchart.conf" conditional='ENABLE_BOOTCHART' |
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28 | xmlns:xi="http://www.w3.org/2001/XInclude"> |
29 | <refentryinfo> | |
30 | <title>bootchart.conf</title> | |
31 | <productname>systemd</productname> | |
32 | ||
33 | <authorgroup> | |
34 | <author> | |
35 | <contrib>Developer</contrib> | |
36 | <firstname>Auke</firstname> | |
37 | <surname>Kok</surname> | |
38 | <email>auke-jan.h.kok@intel.com</email> | |
39 | </author> | |
40 | </authorgroup> | |
41 | </refentryinfo> | |
42 | ||
43 | <refmeta> | |
44 | <refentrytitle>bootchart.conf</refentrytitle> | |
45 | <manvolnum>5</manvolnum> | |
46 | </refmeta> | |
47 | ||
48 | <refnamediv> | |
49 | <refname>bootchart.conf</refname> | |
50 | <refname>bootchart.conf.d</refname> | |
51 | <refpurpose>Boot performance analysis graphing tool configuration files</refpurpose> | |
52 | </refnamediv> | |
53 | ||
54 | <refsynopsisdiv> | |
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55 | <para><filename>/etc/systemd/bootchart.conf</filename></para> |
56 | <para><filename>/etc/systemd/bootchart.conf.d/*.conf</filename></para> | |
798d3a52 | 57 | <para><filename>/run/systemd/bootchart.conf.d/*.conf</filename></para> |
12b42c76 | 58 | <para><filename>/usr/lib/systemd/bootchart.conf.d/*.conf</filename></para> |
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59 | </refsynopsisdiv> |
60 | ||
61 | <refsect1> | |
62 | <title>Description</title> | |
63 | ||
64 | <para>When starting, systemd-bootchart will read the configuration | |
12b42c76 | 65 | file <filename>/etc/systemd/bootchart.conf</filename>, followed by |
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66 | the files in the <filename>bootchart.conf.d</filename> |
67 | directories. These configuration files determine logging | |
68 | parameters and graph output.</para> | |
69 | </refsect1> | |
70 | ||
e93549ef | 71 | <xi:include href="standard-conf.xml" xpointer="main-conf" /> |
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72 | |
73 | <refsect1> | |
74 | <title>Options</title> | |
75 | ||
76 | <variablelist class='bootchart-directives'> | |
77 | ||
78 | <varlistentry> | |
79 | <term><varname>Samples=500</varname></term> | |
80 | <listitem><para>Configure the amount of samples to record in | |
81 | total before bootchart exits. Each sample will record at | |
82 | intervals defined by Frequency=.</para></listitem> | |
83 | </varlistentry> | |
84 | ||
85 | <varlistentry> | |
86 | <term><varname>Frequency=25</varname></term> | |
87 | <listitem><para>Configure the sample log frequency. This can | |
88 | be a fractional number, but must be larger than 0.0. Most | |
b938cb90 | 89 | systems can cope with values under 25–50 without impacting |
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90 | boot time severely.</para></listitem> |
91 | </varlistentry> | |
92 | ||
93 | <varlistentry> | |
94 | <term><varname>Relative=no</varname></term> | |
95 | <listitem><para>Configures whether the left axis of the output | |
96 | graph equals time=0.0 (<constant>CLOCK_MONOTONIC</constant> | |
97 | start). This is useful for using bootchart at post-boot time | |
98 | to profile an already booted system, otherwise the graph would | |
99 | become extremely large. If set to yes, the horizontal axis | |
100 | starts at the first recorded sample instead of time=0.0. | |
101 | </para></listitem> | |
102 | </varlistentry> | |
103 | ||
104 | <varlistentry> | |
105 | <term><varname>Filter=no</varname></term> | |
106 | <listitem><para>Configures whether the resulting graph should | |
107 | omit tasks that did not contribute significantly to the boot. | |
108 | Processes that are too short-lived (only seen in one sample) | |
109 | or that do not consume any significant CPU time (less than | |
110 | 0.001sec) will not be displayed in the output | |
111 | graph.</para></listitem> | |
112 | </varlistentry> | |
113 | ||
114 | <varlistentry> | |
115 | <term><varname>Output=[path]</varname></term> | |
116 | <listitem><para>Configures the output directory for writing | |
117 | the graphs. By default, bootchart writes the graphs to | |
118 | <filename>/run/log</filename>.</para></listitem> | |
119 | </varlistentry> | |
120 | ||
121 | <varlistentry> | |
122 | <term><varname>Init=[path]</varname></term> | |
123 | <listitem><para>Configures bootchart to run a non-standard | |
124 | binary instead of | |
12b42c76 | 125 | <filename>/usr/lib/systemd/systemd</filename>. This option is |
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126 | only relevant if bootchart was invoked from the kernel command |
127 | line with | |
12b42c76 | 128 | init=/usr/lib/systemd/systemd-bootchart.</para></listitem> |
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129 | </varlistentry> |
130 | ||
131 | <varlistentry> | |
132 | <term><varname>PlotMemoryUsage=no</varname></term> | |
133 | <listitem><para>If set to yes, enables logging and graphing of | |
134 | processes' PSS memory consumption.</para></listitem> | |
135 | </varlistentry> | |
136 | ||
137 | <varlistentry> | |
138 | <term><varname>PlotEntropyGraph=no</varname></term> | |
139 | <listitem><para>If set to yes, enables logging and graphing of | |
140 | the kernel random entropy pool size.</para></listitem> | |
141 | </varlistentry> | |
142 | ||
143 | <varlistentry> | |
144 | <term><varname>ScaleX=100</varname></term> | |
145 | <listitem><para>Horizontal scaling factor for all variable | |
146 | graph components.</para></listitem> | |
147 | </varlistentry> | |
148 | ||
149 | <varlistentry> | |
150 | <term><varname>ScaleY=20</varname></term> | |
151 | <listitem><para>Vertical scaling factor for all variable graph | |
152 | components.</para></listitem> | |
153 | </varlistentry> | |
154 | ||
155 | <varlistentry> | |
156 | <term><varname>ControlGroup=no</varname></term> | |
157 | <listitem><para>Display process control group. | |
158 | </para></listitem> | |
159 | </varlistentry> | |
160 | ||
161 | </variablelist> | |
162 | </refsect1> | |
163 | ||
164 | <refsect1> | |
165 | <title>See Also</title> | |
166 | <para> | |
167 | <citerefentry><refentrytitle>systemd-bootchart</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
168 | <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry> | |
169 | </para> | |
170 | </refsect1> | |
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171 | |
172 | </refentry> |