title: Glassfish 4.1 high CPU usage
body: <p>I have an issue running GlassFish 4.1 (Java 8 update 20, Windows server 2008).</p>
  
  <p>As soon as application usage goes up, one of the cores goes to maximum load and stays that way even after all clients are gone. Only GlassFish restart helps.</p>
  
  <p>It seems to me it is the acceptor thread (currently using only one). I tested with two acceptor threads and as a result two of the cores went full load.</p>
  
  <p>Similar problem here: <a href="https://stackoverflow.com/questions/25922809/glassfish-4-grizzly-threads-heavy-cpu-usage">Glassfish 4 Grizzly Threads Heavy CPU usage</a>.</p>
  
  <p>Any ideas are welcome.</p>