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<body class="manpage">
<div id="header">
<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> <device> [--nvmset-id=<nvmset_id> | -i <nvmset_id>]
                        [--raw-binary | -b]
                        [--output-format=<fmt> | -o <fmt>] [--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 <device> 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 <nvmset_id>
</dt>
<dt class="hdlist1">
--nvmset-id=<nvmset_id>
</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’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 <fmt>
</dt>
<dt class="hdlist1">
--output-format=<fmt>
</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 > 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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