JBoss is slow or unresponsive when using an executor for the web subsystem

Issue

• We configured an executor for our web connectors like so and starting seeing performance issues:

      <bounded-queue-thread-pool name="ajp-executor">
          <core-threads count="4"/>
          <queue-length count="100"/>
          <max-threads count="400"/>
          <keepalive-time time="600" unit="seconds"/>
      </bounded-queue-thread-pool>