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<body class="manpage">
<div id="header">
<h1>
TRACE-CMD-STAT(1) Manual Page
</h1>
<h2>NAME</h2>
<div class="sectionbody">
<p>trace-cmd-stat -
   show the status of the tracing (ftrace) system
</p>
</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="paragraph"><p><strong>trace-cmd stat</strong> [<em>OPTIONS</em>]</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph"><p>The trace-cmd(1) stat displays the various status of the tracing (ftrace)
system. The status that it shows is:</p></div>
<div class="paragraph"><p><strong>Instances:</strong> List all configured ftrace instances.</p></div>
<div class="paragraph"><p><strong>Tracer:</strong> if one of the tracers (like function_graph) is active. Otherwise
  nothing is displayed.</p></div>
<div class="paragraph"><p><strong>Events:</strong> Lists the events that are enable.</p></div>
<div class="paragraph"><p><strong>Event filters:</strong> Shows any filters that are set for any events</p></div>
<div class="paragraph"><p><strong>Function filters:</strong> Shows any filters for the function tracers</p></div>
<div class="paragraph"><p><strong>Graph functions:</strong> Shows any functions that the function graph tracer should graph</p></div>
<div class="paragraph"><p><strong>Buffers:</strong> Shows the trace buffer size if they have been expanded.
   By default, tracing buffers are in a compressed format until they are used.
   If they are compressed, the buffer display will not be shown.</p></div>
<div class="paragraph"><p><strong>Trace clock:</strong> If the tracing clock is anything other than the default "local"
   it will be displayed.</p></div>
<div class="paragraph"><p><strong>Trace CPU mask:</strong> If not all available CPUs are in the tracing CPU mask, then
   the tracing CPU mask will be displayed.</p></div>
<div class="paragraph"><p><strong>Trace max latency:</strong> Shows the value of the trace max latency if it is other than zero.</p></div>
<div class="paragraph"><p><strong>Kprobes:</strong> Shows any kprobes that are defined for tracing.</p></div>
<div class="paragraph"><p><strong>Uprobes:</strong> Shows any uprobes that are defined for tracing.</p></div>
<div class="paragraph"><p><strong>Error log:</strong> Dump the content of ftrace error_log file.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_options">OPTIONS</h2>
<div class="sectionbody">
<div class="dlist"><dl>
<dt class="hdlist1">
<strong>-B</strong> <em>buffer-name</em>
</dt>
<dd>
<p>
    Display the status of a given buffer instance. May be specified more than once
    to display the status of multiple instances.
</p>
</dd>
<dt class="hdlist1">
<strong>-t</strong>
</dt>
<dd>
<p>
    If <strong>-B</strong> is also specified, show the status of the top level tracing directory
    as well as the instance(s).
</p>
</dd>
<dt class="hdlist1">
<strong>-o</strong>
</dt>
<dd>
<p>
    Display the all the options along with their values. If they start with "no", then
    the option is disabled.
</p>
</dd>
</dl></div>
</div>
</div>
<div class="sect1">
<h2 id="_see_also">SEE ALSO</h2>
<div class="sectionbody">
<div class="paragraph"><p>trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1),
trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1),
trace-cmd-split(1), trace-cmd-listen(1)</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_author">AUTHOR</h2>
<div class="sectionbody">
<div class="paragraph"><p>Written by Steven Rostedt, &lt;<a href="mailto:rostedt@goodmis.org">rostedt@goodmis.org</a>&gt;</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_resources">RESOURCES</h2>
<div class="sectionbody">
<div class="paragraph"><p><a href="https://git.kernel.org/pub/scm/utils/trace-cmd/trace-cmd.git/">https://git.kernel.org/pub/scm/utils/trace-cmd/trace-cmd.git/</a></p></div>
</div>
</div>
<div class="sect1">
<h2 id="_copying">COPYING</h2>
<div class="sectionbody">
<div class="paragraph"><p>Copyright (C) 2014 Red Hat, Inc. Free use of this software is granted under
the terms of the GNU Public License (GPL).</p></div>
</div>
</div>
</div>
<div id="footnotes"><hr /></div>
<div id="footer">
<div id="footer-text">
Last updated
 2023-06-07 20:21:00 UTC
</div>
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