斯卡拉 – 为什么我的演员调度在Akka缩小？

我有一个100个运行Actors的actor池,它共享一个工作窃取调度程序,其CorePoolSize设置为100.但是现在当向一个Actors发送19条消息时,19条消息没有并行化到19个Actors,只有5条消息正在运行在平行下.当这5条消息完成后,接下来的5条消息将由这些相同的5个Actors再次处理,依此类推.为什么我的19条消息并非并行运行,我在这里缺少什么？

我的代码基本上看起来像这样：

object TestActor {
  val dispatcher = Dispatchers.newExecutorBasedEventDrivenWorkStealingDispatcher("pool")
                   .setCorePoolSize(100)
                   .setMaxPoolSize(100)
                   .build
}

class TestActor(val name: Integer) extends Actor {
    self.lifeCycle = Permanent
    self.dispatcher = TestActor.dispatcher
    def receive = {
       case num: Integer => {  println("Actor: " + name + " Received: " + num)
                               Thread.sleep(10000)
                            }
    }
}

trait CyclicLoadBalancing extends LoadBalancer { this: Actor =>
    val testActors: List[ActorRef]
    val seq = new CyclicIterator[ActorRef](testActors)
}

trait TestActorManager extends Actor {
     self.lifeCycle = Permanent
     self.faultHandler = OneForOneStrategy(List(classOf[Exception]),5,5000)
     val testActors: List[ActorRef]
     override def preStart = testActors foreach { self.startLink(_) }
     override def postStop = self.shutdownLinkedActors()
}

val supervisor = actorOf(new TestActorManager with CyclicLoadBalancing {
val testActors = (1 until 100 toList) map (i => actorOf(new TestActor(i)))   
}).start

println("Number of Actors: " +  Actor.registry.actorsFor(classOf[TestActor]).length)

val testActor = Actor.registry.actorsFor(classOf[TestActor]).head

(1 until 20 toList) foreach { testActor ! _ }

输出：

Actor: 4 Received: 16
Actor: 3 Received: 17
Actor: 1 Received: 19
Actor: 59 Received: 1
Actor: 2 Received: 18

// 10 secs. are passing..

Actor: 4 Received: 15
Actor: 3 Received: 14
Actor: 1 Received: 13
Actor: 59 Received: 2
Actor: 2 Received: 12

// 10 secs. are passing..

Actor: 4 Received: 11
Actor: 3 Received: 10
Actor: 59 Received: 3
Actor: 2 Received: 8
Actor: 1 Received: 9

// 10 secs. are passing..

Actor: 4 Received: 7
Actor: 3 Received: 6
Actor: 59 Received: 4
Actor: 2 Received: 5

编辑：我正在使用Akka 1.0