title: Laravel 4.1 - queue:listen performance
body: <p>I am trying to use the Queue system in Laravel (4.1). Everything works as expected, with both Redis (with the native driver) and RabbitMQ. 
  The only "issue" I am experiencing is the poor performance. It looks like only 4 jobs per seconds can be processed (I push 1000 jobs in the queue to test it). Have you got any tip to improve the performance?</p>