mirror of
https://git.proxmox.com/git/systemd
synced 2025-12-26 17:40:13 +00:00
82 lines
8.7 KiB
HTML
82 lines
8.7 KiB
HTML
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>bootchart.conf</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><style>
|
|
a.headerlink {
|
|
color: #c60f0f;
|
|
font-size: 0.8em;
|
|
padding: 0 4px 0 4px;
|
|
text-decoration: none;
|
|
visibility: hidden;
|
|
}
|
|
|
|
a.headerlink:hover {
|
|
background-color: #c60f0f;
|
|
color: white;
|
|
}
|
|
|
|
h1:hover > a.headerlink, h2:hover > a.headerlink, h3:hover > a.headerlink, dt:hover > a.headerlink {
|
|
visibility: visible;
|
|
}
|
|
</style><a href="index.html">Index </a>·
|
|
<a href="systemd.directives.html">Directives </a>·
|
|
<a href="../python-systemd/index.html">Python </a>·
|
|
<a href="../libudev/index.html">libudev </a>·
|
|
<a href="../libudev/index.html">gudev </a><span style="float:right">systemd 219</span><hr><div class="refentry"><a name="bootchart.conf"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>bootchart.conf, bootchart.conf.d — Boot performance analysis graphing tool configuration files</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><p><code class="filename">/etc/systemd/bootchart.conf</code></p><p><code class="filename">/etc/systemd/bootchart.conf.d/*.conf</code></p><p><code class="filename">/run/systemd/bootchart.conf.d/*.conf</code></p><p><code class="filename">/usr/lib/systemd/bootchart.conf.d/*.conf</code></p></div><div class="refsect1"><a name="idm140158922052944"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description">¶</a></h2><p>When starting, systemd-bootchart will read the configuration
|
|
file <code class="filename">/etc/systemd/bootchart.conf</code>, followed by
|
|
the files in the <code class="filename">bootchart.conf.d</code>
|
|
directories. These configuration files determine logging
|
|
parameters and graph output.</p></div><div class="refsection"><a name="confd"></a><h2>Configuration Directories and Precedence</h2><p>Configuration files are read from directories in
|
|
<code class="filename">/etc/</code>, <code class="filename">/run/</code>, and
|
|
<code class="filename">/usr/lib/</code>, in order of precedence.
|
|
Each configuration file in these configuration directories shall be named in
|
|
the style of <code class="filename"><em class="replaceable"><code>filename</code></em>.conf</code>.
|
|
Files in <code class="filename">/etc/</code> override files with the same name in
|
|
<code class="filename">/run/</code> and <code class="filename">/usr/lib/</code>. Files in
|
|
<code class="filename">/run/</code> override files with the same name in
|
|
<code class="filename">/usr/lib/</code>.</p><p>Packages should install their configuration files in
|
|
<code class="filename">/usr/lib/</code>. Files in <code class="filename">/etc/</code> are
|
|
reserved for the local administrator, who may use this logic to override the
|
|
configuration files installed by vendor packages. All configuration files
|
|
are sorted by their filename in lexicographic order, regardless of which of
|
|
the directories they reside in. If multiple files specify the same option,
|
|
the entry in the file with the lexicographically latest name will take
|
|
precedence. It is recommended to prefix all filenames with a two-digit number
|
|
and a dash, to simplify the ordering of the files.</p><p>If the administrator wants to disable a configuration file supplied by
|
|
the vendor, the recommended way is to place a symlink to
|
|
<code class="filename">/dev/null</code> in the configuration directory in
|
|
<code class="filename">/etc/</code>, with the same filename as the vendor
|
|
configuration file.</p></div><div class="refsection"><a name="conf"></a><h2>Configuration File</h2><p>Configuration is also read from a single configuration file in
|
|
<code class="filename">/etc/</code>. This file is read before any of the
|
|
configuration directories, and has the lowest precedence; entries in a file
|
|
in any configuration directory override entries in the single configuration
|
|
file.</p></div><div class="refsect1"><a name="idm140158921534208"></a><h2 id="Options">Options<a class="headerlink" title="Permalink to this headline" href="#Options">¶</a></h2><div class="variablelist"><dl class="variablelist"><dt id="Samples=500"><span class="term"><code class="varname">Samples=500</code></span><a class="headerlink" title="Permalink to this term" href="#Samples=500">¶</a></dt><dd><p>Configure the amount of samples to record in
|
|
total before bootchart exits. Each sample will record at
|
|
intervals defined by Frequency=.</p></dd><dt id="Frequency=25"><span class="term"><code class="varname">Frequency=25</code></span><a class="headerlink" title="Permalink to this term" href="#Frequency=25">¶</a></dt><dd><p>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.</p></dd><dt id="Relative=no"><span class="term"><code class="varname">Relative=no</code></span><a class="headerlink" title="Permalink to this term" href="#Relative=no">¶</a></dt><dd><p>Configures whether the left axis of the output
|
|
graph equals time=0.0 (<code class="constant">CLOCK_MONOTONIC</code>
|
|
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.
|
|
</p></dd><dt id="Filter=no"><span class="term"><code class="varname">Filter=no</code></span><a class="headerlink" title="Permalink to this term" href="#Filter=no">¶</a></dt><dd><p>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.</p></dd><dt id="Output=[path]"><span class="term"><code class="varname">Output=[path]</code></span><a class="headerlink" title="Permalink to this term" href="#Output=%5Bpath%5D">¶</a></dt><dd><p>Configures the output directory for writing
|
|
the graphs. By default, bootchart writes the graphs to
|
|
<code class="filename">/run/log</code>.</p></dd><dt id="Init=[path]"><span class="term"><code class="varname">Init=[path]</code></span><a class="headerlink" title="Permalink to this term" href="#Init=%5Bpath%5D">¶</a></dt><dd><p>Configures bootchart to run a non-standard
|
|
binary instead of
|
|
<code class="filename">/usr/lib/systemd/systemd</code>. This option is
|
|
only relevant if bootchart was invoked from the kernel command
|
|
line with
|
|
init=/usr/lib/systemd/systemd-bootchart.</p></dd><dt id="PlotMemoryUsage=no"><span class="term"><code class="varname">PlotMemoryUsage=no</code></span><a class="headerlink" title="Permalink to this term" href="#PlotMemoryUsage=no">¶</a></dt><dd><p>If set to yes, enables logging and graphing of
|
|
processes' PSS memory consumption.</p></dd><dt id="PlotEntropyGraph=no"><span class="term"><code class="varname">PlotEntropyGraph=no</code></span><a class="headerlink" title="Permalink to this term" href="#PlotEntropyGraph=no">¶</a></dt><dd><p>If set to yes, enables logging and graphing of
|
|
the kernel random entropy pool size.</p></dd><dt id="ScaleX=100"><span class="term"><code class="varname">ScaleX=100</code></span><a class="headerlink" title="Permalink to this term" href="#ScaleX=100">¶</a></dt><dd><p>Horizontal scaling factor for all variable
|
|
graph components.</p></dd><dt id="ScaleY=20"><span class="term"><code class="varname">ScaleY=20</code></span><a class="headerlink" title="Permalink to this term" href="#ScaleY=20">¶</a></dt><dd><p>Vertical scaling factor for all variable graph
|
|
components.</p></dd><dt id="ControlGroup=no"><span class="term"><code class="varname">ControlGroup=no</code></span><a class="headerlink" title="Permalink to this term" href="#ControlGroup=no">¶</a></dt><dd><p>Display process control group.
|
|
</p></dd></dl></div></div><div class="refsect1"><a name="idm140158921267200"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p>
|
|
<a href="systemd-bootchart.html"><span class="citerefentry"><span class="refentrytitle">systemd-bootchart</span>(1)</span></a>,
|
|
<a href="systemd.directives.html"><span class="citerefentry"><span class="refentrytitle">systemd.directives</span>(7)</span></a>
|
|
</p></div></div></body></html>
|