man/bootchart.conf.html

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  22   <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
  23                 configuration file <code class="filename">bootchart.conf</code>.
  24                 This configuration file determines logging parameters and
  25                 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
  26                                 record total before bootchart exits. Each sample will
  27                                 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.
  28                                 This can be a fractional number, but must be larger than
  29                                 0.0. Most systems can cope with values under 25-50 without
  30                                 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
  31                                 output graph equals time=0.0 (CLOCK_MONOTONIC start). This
  32                                 is useful for using bootchart at post-boot time to profile
  33                                 an already booted system, otherwise the graph would become
  34                                 extremely large. If set to yes, the horizontal axis starts
  35                                 at the first recorded sample instead of time=0.0.
  36                                 </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
  37                                 should omit tasks that did not contribute significantly
  38                                 to the boot. Processes that are too short-lived (only
  39                                 seen in one sample) or that do not consume any significant
  40                                 CPU time (less than 0.001sec) will not be displayed in
  41                                 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
  42                                 the graphs. By default, bootchart writes the graphs to
  43                                 <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
  44                                 binary instead of <code class="filename">/sbin/init</code>. This
  45                                 option is only relevant if bootchart was invoked from the
  46                                 kernel command line with
  47                                 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
  48                                 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
  49                                 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
  50                                 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
  51                                 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>
  52                           <a href="systemd-bootchart.html"><span class="citerefentry"><span class="refentrytitle">systemd-bootchart</span>(1)</span></a>,
  53                           <a href="systemd.directives.html"><span class="citerefentry"><span class="refentrytitle">systemd.directives</span>(7)</span></a>
  54                   </p></div></div></body></html>