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  <div class="section" id="json-and-text-format-description">
<h1>JSON and Text Format Description<a class="headerlink" href="#json-and-text-format-description" title="Permalink to this headline">ΒΆ</a></h1>
<p>Both formats are exported by serializing protobuf messages, each on a new line.
First, all collected events are processed. Then strings are serialized,
followed by stdout, stderr streams if any, followed by thread names.</p>
<p>Output layout:</p>
<div class="highlight-text"><div class="highlight"><pre><span></span>{Event #1}
{Event #2}
...
{Event #N}
{Strings}
{Streams}
{Threads}
</pre></div>
</div>
<p>For easier grepping of JSON output, the <code class="docutils literal"><span class="pre">--line-by-line</span></code> switch may be used to
force manual splitting of strings, streams and thread names data.</p>
<p>Example line split: <code class="docutils literal"><span class="pre">./nsys</span> <span class="pre">export</span> <span class="pre">--export-json</span> <span class="pre">--line-by-line</span> <span class="pre">sample.qdrep</span> <span class="pre">--</span> <span class="pre">-</span></code></p>
<div class="highlight-json"><div class="highlight"><pre><span></span><span class="p">{</span><span class="nt">&quot;type&quot;</span><span class="p">:</span><span class="s2">&quot;String&quot;</span><span class="p">,</span><span class="nt">&quot;id&quot;</span><span class="p">:</span><span class="s2">&quot;3720&quot;</span><span class="p">,</span><span class="nt">&quot;value&quot;</span><span class="p">:</span><span class="s2">&quot;Process 14944 was launched by the profiler&quot;</span><span class="p">}</span>
<span class="p">{</span><span class="nt">&quot;type&quot;</span><span class="p">:</span><span class="s2">&quot;String&quot;</span><span class="p">,</span><span class="nt">&quot;id&quot;</span><span class="p">:</span><span class="s2">&quot;3721&quot;</span><span class="p">,</span><span class="nt">&quot;value&quot;</span><span class="p">:</span><span class="s2">&quot;Profiling has started.&quot;</span><span class="p">}</span>
<span class="p">{</span><span class="nt">&quot;type&quot;</span><span class="p">:</span><span class="s2">&quot;String&quot;</span><span class="p">,</span><span class="nt">&quot;id&quot;</span><span class="p">:</span><span class="s2">&quot;3722&quot;</span><span class="p">,</span><span class="nt">&quot;value&quot;</span><span class="p">:</span><span class="s2">&quot;Profiler attached to the process.&quot;</span><span class="p">}</span>
<span class="p">{</span><span class="nt">&quot;type&quot;</span><span class="p">:</span><span class="s2">&quot;String&quot;</span><span class="p">,</span><span class="nt">&quot;id&quot;</span><span class="p">:</span><span class="s2">&quot;3723&quot;</span><span class="p">,</span><span class="nt">&quot;value&quot;</span><span class="p">:</span><span class="s2">&quot;Profiling has stopped.&quot;</span><span class="p">}</span>
<span class="p">{</span><span class="nt">&quot;type&quot;</span><span class="p">:</span><span class="s2">&quot;ThreadName&quot;</span><span class="p">,</span><span class="nt">&quot;globalTid&quot;</span><span class="p">:</span><span class="s2">&quot;72057844756653436&quot;</span><span class="p">,</span><span class="nt">&quot;nameId&quot;</span><span class="p">:</span><span class="s2">&quot;14&quot;</span><span class="p">,</span><span class="nt">&quot;priority&quot;</span><span class="p">:</span><span class="s2">&quot;10&quot;</span><span class="p">}</span>
<span class="p">{</span><span class="nt">&quot;type&quot;</span><span class="p">:</span><span class="s2">&quot;ThreadName&quot;</span><span class="p">,</span><span class="nt">&quot;globalTid&quot;</span><span class="p">:</span><span class="s2">&quot;72057844756657940&quot;</span><span class="p">,</span><span class="nt">&quot;nameId&quot;</span><span class="p">:</span><span class="s2">&quot;15&quot;</span><span class="p">,</span><span class="nt">&quot;priority&quot;</span><span class="p">:</span><span class="s2">&quot;10&quot;</span><span class="p">}</span>
<span class="p">{</span><span class="nt">&quot;type&quot;</span><span class="p">:</span><span class="s2">&quot;ThreadName&quot;</span><span class="p">,</span><span class="nt">&quot;globalTid&quot;</span><span class="p">:</span><span class="s2">&quot;72057844756654400&quot;</span><span class="p">,</span><span class="nt">&quot;nameId&quot;</span><span class="p">:</span><span class="s2">&quot;24&quot;</span><span class="p">,</span><span class="nt">&quot;priority&quot;</span><span class="p">:</span><span class="s2">&quot;10&quot;</span><span class="p">}</span>
</pre></div>
</div>
<p>Compare with: <code class="docutils literal"><span class="pre">./nsys</span> <span class="pre">export</span> <span class="pre">--export-json</span> <span class="pre">sample.qdrep</span> <span class="pre">--</span> <span class="pre">-</span></code></p>
<div class="highlight-json"><div class="highlight"><pre><span></span><span class="p">{</span><span class="nt">&quot;data&quot;</span><span class="p">:[</span><span class="s2">&quot;[Unknown]&quot;</span><span class="p">,</span><span class="s2">&quot;[Unknown kernel module]&quot;</span><span class="p">,</span><span class="s2">&quot;[Max depth]&quot;</span><span class="p">,</span><span class="s2">&quot;[Broken backtraces]&quot;</span><span class="p">,</span><span class="s2">&quot;[Called from Java]&quot;</span><span class="p">,</span><span class="s2">&quot;QnxKernelTrace&quot;</span><span class="p">,</span><span class="s2">&quot;mm_&quot;</span><span class="p">,</span><span class="s2">&quot;task_submit&quot;</span><span class="p">,</span><span class="s2">&quot;class_id&quot;</span><span class="p">,</span><span class="s2">&quot;syncpt_id&quot;</span><span class="p">,</span><span class="s2">&quot;syncpt_thresh&quot;</span><span class="p">,</span><span class="s2">&quot;pid&quot;</span><span class="p">,</span><span class="s2">&quot;tid&quot;</span><span class="p">,</span><span class="s2">&quot;FTrace&quot;</span><span class="p">,</span><span class="s2">&quot;[NSys]&quot;</span><span class="p">,</span><span class="s2">&quot;[NSys Comms]&quot;</span><span class="p">,</span> <span class="s2">&quot;...&quot;</span> <span class="p">,</span><span class="s2">&quot;Process 14944 was launched by the profiler&quot;</span><span class="p">,</span><span class="s2">&quot;Profiling has started.&quot;</span><span class="p">,</span><span class="s2">&quot;Profiler attached to the process.&quot;</span><span class="p">,</span><span class="s2">&quot;Profiling has stopped.&quot;</span><span class="p">]}</span>
<span class="p">{</span><span class="nt">&quot;data&quot;</span><span class="p">:[{</span><span class="nt">&quot;nameIdx&quot;</span><span class="p">:</span><span class="s2">&quot;14&quot;</span><span class="p">,</span><span class="nt">&quot;priority&quot;</span><span class="p">:</span><span class="s2">&quot;10&quot;</span><span class="p">,</span><span class="nt">&quot;globalTid&quot;</span><span class="p">:</span><span class="s2">&quot;72057844756653436&quot;</span><span class="p">},{</span><span class="nt">&quot;nameIdx&quot;</span><span class="p">:</span><span class="s2">&quot;15&quot;</span><span class="p">,</span><span class="nt">&quot;priority&quot;</span><span class="p">:</span><span class="s2">&quot;10&quot;</span><span class="p">,</span><span class="nt">&quot;globalTid&quot;</span><span class="p">:</span><span class="s2">&quot;72057844756657940&quot;</span><span class="p">},{</span><span class="nt">&quot;nameIdx&quot;</span><span class="p">:</span><span class="s2">&quot;24&quot;</span><span class="p">,</span><span class="nt">&quot;priority&quot;</span><span class="p">:</span><span class="s2">&quot;10&quot;</span><span class="p">,</span><span class="nt">&quot;globalTid&quot;</span><span class="p">:</span><span class="s2">&quot;72057844756654400&quot;</span><span class="p">}]}</span>
</pre></div>
</div>
<p>Note, that only last few lines are shown here for clarity.</p>
</div>


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