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<body class="manpage">
<div id="header">
<h1>
TRACE-CMD-DUMP(1) Manual Page
</h1>
<h2>NAME</h2>
<div class="sectionbody">
<p>trace-cmd-dump -
   show a meta data from a trace file, created by trace-cmd record
</p>
</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="paragraph"><p><strong>trace-cmd dump</strong> [<em>OPTIONS</em>] [<em>input-file</em>]</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph"><p>The trace-cmd(1) dump command will display the meta data from a trace file
created by trace-cmd record.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_options">OPTIONS</h2>
<div class="sectionbody">
<div class="dlist"><dl>
<dt class="hdlist1">
<strong>-i</strong> <em>input-file</em>
</dt>
<dd>
<p>
    By default, trace-cmd dump will read the file <em>trace.dat</em>. But the <strong>-i</strong>
    option open up the given <em>input-file</em> instead. Note, the input file may
    also be specified as the last item on the command line.
</p>
</dd>
<dt class="hdlist1">
<strong>-v</strong>, <strong>--validate</strong>
</dt>
<dd>
<p>
    Check if the input file is a valid trace file, created by trace-cmd.
</p>
</dd>
<dt class="hdlist1">
<strong>--summary</strong>
</dt>
<dd>
<p>
    Print a meta data summary - initial format and a short description of each
    file section. This is the default action, if no arguments are specified.
</p>
</dd>
<dt class="hdlist1">
<strong>--head-page</strong>
</dt>
<dd>
<p>
    Print the header page information, stored in the file.
</p>
</dd>
<dt class="hdlist1">
<strong>--head-event</strong>
</dt>
<dd>
<p>
    Print the event header information, stored in the file.
</p>
</dd>
<dt class="hdlist1">
<strong>--ftrace-events</strong>
</dt>
<dd>
<p>
    Print formats of ftrace specific events.
</p>
</dd>
<dt class="hdlist1">
<strong>--systems</strong>
</dt>
<dd>
<p>
    Print information of event systems, stored in the file - name and number of
    events for each system.
</p>
</dd>
<dt class="hdlist1">
<strong>--events</strong>
</dt>
<dd>
<p>
    Print formats of all events, stored in the file.
</p>
</dd>
<dt class="hdlist1">
<strong>--kallsyms</strong>
</dt>
<dd>
<p>
    Print information of the mapping of function addresses to the function names.
</p>
</dd>
<dt class="hdlist1">
<strong>--printk</strong>
</dt>
<dd>
<p>
    Print trace_printk() format strings, stored in the file.
</p>
</dd>
<dt class="hdlist1">
<strong>--cmd-lines</strong>
</dt>
<dd>
<p>
    Print mapping a PID to a process name.
</p>
</dd>
<dt class="hdlist1">
<strong>--options</strong>
</dt>
<dd>
<p>
    Print all options, stored in the file.
</p>
</dd>
<dt class="hdlist1">
<strong>--flyrecord</strong>
</dt>
<dd>
<p>
    Print the offset and the size of tracing data per each CPU.
</p>
</dd>
<dt class="hdlist1">
<strong>--clock</strong>
</dt>
<dd>
<p>
    Print the trace clock, used for timestamp of the tracing events, stored in the file.
</p>
</dd>
<dt class="hdlist1">
<strong>--all</strong>
</dt>
<dd>
<p>
    Print all meta data from the file.
</p>
</dd>
<dt class="hdlist1">
<strong>--help</strong>
</dt>
<dd>
<p>
    Print usage information.
</p>
</dd>
<dt class="hdlist1">
<strong>--verbose</strong>[=<em>level</em>]
</dt>
<dd>
<p>
     Set the log level. Supported log levels are "none", "critical", "error", "warning",
     "info", "debug", "all" or their identifiers "0", "1", "2", "3", "4", "5", "6". Setting the log
     level to specific value enables all logs from that and all previous levels.
     The level will default to "info" if one is not specified.
</p>
<div class="literalblock">
<div class="content">
<pre><code>Example: enable all critical, error and warning logs</code></pre>
</div></div>
<div class="literalblock">
<div class="content">
<pre><code>trace-cmd report --verbose=warning</code></pre>
</div></div>
</dd>
</dl></div>
</div>
</div>
<div class="sect1">
<h2 id="_examples">EXAMPLES</h2>
<div class="sectionbody">
<div class="listingblock">
<div class="content">
<pre><tt><span style="font-style: italic"><span style="color: #9A1900"># trace-cmd dump --summary -i trace.dat</span></span>

Tracing meta data <span style="font-weight: bold"><span style="color: #0000FF">in</span></span> file trace<span style="color: #990000">.</span>dat<span style="color: #990000">:</span>
        <span style="color: #990000">[</span>Initial format<span style="color: #990000">]</span>
                <span style="color: #993399">6</span>       <span style="color: #990000">[</span>Version<span style="color: #990000">]</span>
                <span style="color: #993399">0</span>       <span style="color: #990000">[</span>Little endian<span style="color: #990000">]</span>
                <span style="color: #993399">8</span>       <span style="color: #990000">[</span>Bytes <span style="font-weight: bold"><span style="color: #0000FF">in</span></span> a long<span style="color: #990000">]</span>
                <span style="color: #993399">4096</span>    <span style="color: #990000">[</span>Page size<span style="color: #990000">,</span> bytes<span style="color: #990000">]</span>
        <span style="color: #990000">[</span>Header info<span style="color: #990000">,</span> <span style="color: #993399">205</span> bytes<span style="color: #990000">]</span>
        <span style="color: #990000">[</span>Header event<span style="color: #990000">,</span> <span style="color: #993399">205</span> bytes<span style="color: #990000">]</span>
        <span style="color: #990000">[</span>Ftrace format<span style="color: #990000">,</span> <span style="color: #993399">15</span> events<span style="color: #990000">]</span>
        <span style="color: #990000">[</span>Events format<span style="color: #990000">,</span> <span style="color: #993399">2</span> systems<span style="color: #990000">]</span>
        <span style="color: #990000">[</span>Kallsyms<span style="color: #990000">,</span> <span style="color: #993399">7144493</span> bytes<span style="color: #990000">]</span>
        <span style="color: #990000">[</span>Trace printk<span style="color: #990000">,</span> <span style="color: #993399">2131</span> bytes<span style="color: #990000">]</span>
        <span style="color: #990000">[</span>Saved <span style="font-weight: bold"><span style="color: #0000FF">command</span></span> lines<span style="color: #990000">,</span> <span style="color: #993399">117</span> bytes<span style="color: #990000">]</span>
        <span style="color: #993399">8</span> <span style="color: #990000">[</span>CPUs with tracing data<span style="color: #990000">]</span>
        <span style="color: #990000">[</span><span style="color: #993399">12</span> options<span style="color: #990000">]</span>
        <span style="color: #990000">[</span>Flyrecord tracing data<span style="color: #990000">]</span></tt></pre></div></div>
<div class="listingblock">
<div class="content">
<pre><tt><span style="font-style: italic"><span style="color: #9A1900"># trace-cmd dump --flyrecord -i trace.dat</span></span>
        <span style="color: #990000">[</span>Flyrecord tracing data<span style="color: #990000">]</span>
                 <span style="color: #993399">7176192</span> <span style="color: #993399">0</span>      <span style="color: #990000">[</span>offset<span style="color: #990000">,</span> size of cpu <span style="color: #993399">0</span><span style="color: #990000">]</span>
                 <span style="color: #993399">7176192</span> <span style="color: #993399">0</span>      <span style="color: #990000">[</span>offset<span style="color: #990000">,</span> size of cpu <span style="color: #993399">1</span><span style="color: #990000">]</span>
                 <span style="color: #993399">7176192</span> <span style="color: #993399">0</span>      <span style="color: #990000">[</span>offset<span style="color: #990000">,</span> size of cpu <span style="color: #993399">2</span><span style="color: #990000">]</span>
                 <span style="color: #993399">7176192</span> <span style="color: #993399">4096</span>   <span style="color: #990000">[</span>offset<span style="color: #990000">,</span> size of cpu <span style="color: #993399">3</span><span style="color: #990000">]</span>
                 <span style="color: #993399">7180288</span> <span style="color: #993399">4096</span>   <span style="color: #990000">[</span>offset<span style="color: #990000">,</span> size of cpu <span style="color: #993399">4</span><span style="color: #990000">]</span>
                 <span style="color: #993399">7184384</span> <span style="color: #993399">0</span>      <span style="color: #990000">[</span>offset<span style="color: #990000">,</span> size of cpu <span style="color: #993399">5</span><span style="color: #990000">]</span>
                 <span style="color: #993399">7184384</span> <span style="color: #993399">0</span>      <span style="color: #990000">[</span>offset<span style="color: #990000">,</span> size of cpu <span style="color: #993399">6</span><span style="color: #990000">]</span>
                 <span style="color: #993399">7184384</span> <span style="color: #993399">0</span>      <span style="color: #990000">[</span>offset<span style="color: #990000">,</span> size of cpu <span style="color: #993399">7</span><span style="color: #990000">]</span></tt></pre></div></div>
<div class="listingblock">
<div class="content">
<pre><tt><span style="font-style: italic"><span style="color: #9A1900"># trace-cmd dump --summary --systems -i trace.dat</span></span>

Tracing meta data <span style="font-weight: bold"><span style="color: #0000FF">in</span></span> file trace<span style="color: #990000">.</span>dat<span style="color: #990000">:</span>
        <span style="color: #990000">[</span>Initial format<span style="color: #990000">]</span>
                <span style="color: #993399">6</span>       <span style="color: #990000">[</span>Version<span style="color: #990000">]</span>
                <span style="color: #993399">0</span>       <span style="color: #990000">[</span>Little endian<span style="color: #990000">]</span>
                <span style="color: #993399">8</span>       <span style="color: #990000">[</span>Bytes <span style="font-weight: bold"><span style="color: #0000FF">in</span></span> a long<span style="color: #990000">]</span>
                <span style="color: #993399">4096</span>    <span style="color: #990000">[</span>Page size<span style="color: #990000">,</span> bytes<span style="color: #990000">]</span>
        <span style="color: #990000">[</span>Header info<span style="color: #990000">,</span> <span style="color: #993399">205</span> bytes<span style="color: #990000">]</span>
        <span style="color: #990000">[</span>Header event<span style="color: #990000">,</span> <span style="color: #993399">205</span> bytes<span style="color: #990000">]</span>
        <span style="color: #990000">[</span>Ftrace format<span style="color: #990000">,</span> <span style="color: #993399">15</span> events<span style="color: #990000">]</span>
        <span style="color: #990000">[</span>Events format<span style="color: #990000">,</span> <span style="color: #993399">3</span> systems<span style="color: #990000">]</span>
                sched <span style="color: #993399">23</span> <span style="color: #990000">[</span>system<span style="color: #990000">,</span> events<span style="color: #990000">]</span>
                irq <span style="color: #993399">5</span> <span style="color: #990000">[</span>system<span style="color: #990000">,</span> events<span style="color: #990000">]</span>
                kvm <span style="color: #993399">70</span> <span style="color: #990000">[</span>system<span style="color: #990000">,</span> events<span style="color: #990000">]</span>
        <span style="color: #990000">[</span>Kallsyms<span style="color: #990000">,</span> <span style="color: #993399">7144493</span> bytes<span style="color: #990000">]</span>
        <span style="color: #990000">[</span>Trace printk<span style="color: #990000">,</span> <span style="color: #993399">2131</span> bytes<span style="color: #990000">]</span>
        <span style="color: #990000">[</span>Saved <span style="font-weight: bold"><span style="color: #0000FF">command</span></span> lines<span style="color: #990000">,</span> <span style="color: #993399">157</span> bytes<span style="color: #990000">]</span>
        <span style="color: #993399">8</span> <span style="color: #990000">[</span>CPUs with tracing data<span style="color: #990000">]</span>
        <span style="color: #990000">[</span><span style="color: #993399">11</span> options<span style="color: #990000">]</span>
        <span style="color: #990000">[</span>Flyrecord tracing data<span style="color: #990000">]</span></tt></pre></div></div>
<div class="listingblock">
<div class="content">
<pre><tt><span style="font-style: italic"><span style="color: #9A1900"># trace-cmd dump --summary --systems -i trace.dat</span></span>
File trace<span style="color: #990000">.</span>dat is a valid trace-cmd file</tt></pre></div></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.dat(1)</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_author">AUTHOR</h2>
<div class="sectionbody">
<div class="paragraph"><p><strong>Steven Rostedt</strong> &lt;<a href="mailto:rostedt@goodmis.org">rostedt@goodmis.org</a>&gt;, author of <strong>trace-cmd</strong>.
<strong>Tzvetomir Stoyanov</strong> &lt;<a href="mailto:tz.stoyanov@gmail.com">tz.stoyanov@gmail.com</a>&gt;, author of this man page.</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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