title: What is the default max heap size (-Xmx) in Java 8?
body: <p>In <a href="http://docs.oracle.com/javase/8/docs/technotes/tools/windows/java.html" rel="nofollow noreferrer">the oracle documentation</a> I found:</p>
  <blockquote>
  <p>-Xmx<em>size</em> Specifies the maximum size (in bytes) of the memory allocation pool in bytes ... The default
  value is chosen at runtime based on system configuration.</p>
  </blockquote>
  <p>What does <em>system configuration</em> mean?</p>