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55 lines
6.6 KiB
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55 lines
6.6 KiB
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<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>
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</style><a href="index.html">Index </a>·
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<a href="systemd.directives.html">Directives </a>·
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<a href="../python-systemd/index.html">Python </a>·
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<a href="../libudev/index.html">libudev </a>·
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<a href="../libudev/index.html">gudev </a><span style="float:right">systemd 204</span><hr><div class="refentry"><a name="bootchart.conf"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>bootchart.conf — Boot performance analysis graphing tool configuration file</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><p><code class="filename">/etc/systemd/bootchart.conf</code></p></div><div class="refsect1"><a name="idm259797249936"></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
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configuration file <code class="filename">bootchart.conf</code>.
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This configuration file determines logging parameters and
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graph output.</p></div><div class="refsect1"><a name="idm259797247936"></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
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record total before bootchart exits. Each sample will
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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.
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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.</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
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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 yes, the horizontal axis starts
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at the first recorded sample instead of time=0.0.
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</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
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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.</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 folder for writing
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the graphs. By default, bootchart writes the graphs to
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<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
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binary instead of <code class="filename">/sbin/init</code>. 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.</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
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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
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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
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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
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graph components.</p></dd></dl></div></div><div class="refsect1"><a name="idm259801179456"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p>
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<a href="systemd-bootchart.html"><span class="citerefentry"><span class="refentrytitle">systemd-bootchart</span>(1)</span></a>,
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<a href="systemd.directives.html"><span class="citerefentry"><span class="refentrytitle">systemd.directives</span>(7)</span></a>
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</p></div></div></body></html>
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