title: Undertow properties default values
body: <p>We're currently tuning our services that uses undertow but we can't find the default values of the following properties:</p>
  
  <pre><code>server.undertow.worker-threads
  server.undertow.io-threads
  </code></pre>
  
  <p>We learned that undertow is using <code>org.xnio.Options</code> in setting-up the threads but can't find any default values.</p>