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<body class="manpage">
<div id="header">
<h1>
TRACE-CMD-STOP(1) Manual Page
</h1>
<h2>NAME</h2>
<div class="sectionbody">
<p>trace-cmd-stop -
   stop the Ftrace Linux kernel tracer from writing to the ring buffer.
</p>
</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="paragraph"><p><strong>trace-cmd stop</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) stop is a complement to <em>trace-cmd-start(1)</em>. This will
disable Ftrace from writing to the ring buffer. This does not stop the
overhead that the tracing may incur. Only the updating of the ring buffer is
disabled, the Ftrace tracing may still be inducing overhead.</p></div>
<div class="paragraph"><p>After stopping the trace, the <em>trace-cmd-extract(1)</em> may strip out the data
from the ring buffer and create a trace.dat file. The Ftrace pseudo file
system may also be examined.</p></div>
<div class="paragraph"><p>To disable the tracing completely to remove the overhead it causes, use
<em>trace-cmd-reset(1)</em>. But after a reset is performed, the data that has been
recorded is lost.</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>
    If the kernel supports multiple buffers, this will stop the trace for
    only the given buffer. It does not affect any other buffer. This may be
    used multiple times to specify different buffers. When this option is
    used, the top level instance will not be stopped unless <strong>-t</strong> is given.
</p>
</dd>
<dt class="hdlist1">
<strong>-a</strong>
</dt>
<dd>
<p>
    Stop the trace for all existing buffer instances. When this option
    is used, the top level instance will not be stopped unless <strong>-t</strong> is given.
</p>
</dd>
<dt class="hdlist1">
<strong>-t</strong>
</dt>
<dd>
<p>
    Stops the top level instance buffer. Without the <strong>-B</strong> or <strong>-a</strong> option this
    is the same as the default. But if <strong>-B</strong> or <strong>-a</strong> is used, this is
    required if the top level instance buffer should also be stopped.
</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-extract(1), trace-cmd-reset(1), trace-cmd-split(1),
trace-cmd-list(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, <<a href="mailto:rostedt@goodmis.org">rostedt@goodmis.org</a>></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) 2010 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
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