ion}</code> is an incrementing log-rotation id. The filepath pattern can
be specified with <code>--trace-event-file-pattern</code> that accepts a template
string that supports <code>${rotation}</code> and <code>${pid}</code>:</p>
<pre><code class="language-txt">node --trace-event-categories v8 --trace-event-file-pattern '${pid}-${rotation}.log' server.js
</code></pre>
<p>Starting with Node.js 10.0.0, the tracing system uses the same time source
as the one used by <code>process.hrtime()</code>
however the tr