our $workers = 16;

  POE::Component::JobQueue->spawn
    ( Alias         => 'passive',         # defaults to 'queuer'
      WorkerLimit   => $workers,                # defaults to 8
      Worker        => \&spawn_a_worker,  # code which will start a session
      Passive       =>
      { Prioritizer => sub { 1},    # defaults to sub { 1 } # FIFO
      },
    );