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<h1>
nvme-predictable-lat-log(1) Manual Page
</h1>
<h2>NAME</h2>
<div class="sectionbody">
<p>nvme-predictable-lat-log -
   Send Predictable latency per NVM set log page request, returns result and log
</p>
</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="verseblock">
<pre class="content"><em>nvme predictable-lat-log</em> &lt;device&gt; [--nvmset-id=&lt;nvmset_id&gt; | -i &lt;nvmset_id&gt;]
                        [--raw-binary | -b]
                        [--output-format=&lt;fmt&gt; | -o &lt;fmt&gt;] [--verbose | -v]</pre>
<div class="attribution">
</div></div>
</div>
</div>
<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph"><p>Retrieves the NVMe Predictable latency per NVM set log page from an NVMe device
and provides the returned structure.</p></div>
<div class="paragraph"><p>The &lt;device&gt; parameter is mandatory and may be either the NVMe character
device (ex: /dev/nvme0), or a namespace block device (ex: /dev/nvme0n1).</p></div>
<div class="paragraph"><p>On success, the returned Predictable latency per NVM set log structure
may be returned in one of several ways depending on the option flags; the
structure may parsed by the program and printed in a readable format or
the raw buffer may be printed to stdout for another program to parse.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_options">OPTIONS</h2>
<div class="sectionbody">
<div class="dlist"><dl>
<dt class="hdlist1">
-i &lt;nvmset_id&gt;
</dt>
<dt class="hdlist1">
--nvmset-id=&lt;nvmset_id&gt;
</dt>
<dd>
<p>
        Retrieve the Predictable latency per NVM set log for the given nvmset id.
        This argument is mandatory and its success may depend on the device&#8217;s
        statistics to provide this log For More details see NVM Express 1.4 Spec.
        Section 5.14.1.10. The default nvmset id to use is 1 for the device.
</p>
</dd>
<dt class="hdlist1">
-b
</dt>
<dt class="hdlist1">
--raw-binary
</dt>
<dd>
<p>
        Print the raw Predictable latency per NVM set log buffer to stdout.
</p>
</dd>
<dt class="hdlist1">
-o &lt;fmt&gt;
</dt>
<dt class="hdlist1">
--output-format=&lt;fmt&gt;
</dt>
<dd>
<p>
        Set the reporting format to <em>normal</em>, <em>json</em> or <em>binary</em>. Only one
        output format can be used at a time.
</p>
</dd>
<dt class="hdlist1">
-v
</dt>
<dt class="hdlist1">
--verbose
</dt>
<dd>
<p>
        Increase the information detail in the output.
</p>
</dd>
</dl></div>
</div>
</div>
<div class="sect1">
<h2 id="_examples">EXAMPLES</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
Print the Predictable latency per NVM set log page in a human readable format:
</p>
<div class="listingblock">
<div class="content">
<pre><code># nvme predictable-lat-log /dev/nvme0</code></pre>
</div></div>
</li>
<li>
<p>
Print the raw Predictable latency per NVM set log to a file:
</p>
<div class="listingblock">
<div class="content">
<pre><code># nvme predictable-lat-log /dev/nvme0 --raw-binary &gt; nvmset_log.raw</code></pre>
</div></div>
<div class="paragraph"><p>It is probably a bad idea to not redirect stdout when using this mode.</p></div>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_nvme">NVME</h2>
<div class="sectionbody">
<div class="paragraph"><p>Part of the nvme-user suite</p></div>
</div>
</div>
</div>
<div id="footnotes"><hr /></div>
<div id="footer">
<div id="footer-text">
Last updated
 2025-02-13 00:00:00 UTC
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