title: Does OpenJDK 1.8 support JFR?
body: <p>I'm not sure if <code>OpenJDK</code> 1.8 supports <code>JFR</code> (java flight recorder). I know it was requested on the <code>OpenJDK</code> bugs forum.</p>
  
  <p>Using <code>OpenJDK</code> on <code>Linux</code> and executing the following from a terminal:</p>
  
  <pre><code>jcmd `&lt;pid&gt;` JFR.start 
  </code></pre>
  
  <p>returns </p>
  
  <blockquote>
    <p>java.lang.IllegalArgumentException: Unknown diagnostic command</p>
  </blockquote>