>From 2.1, ancient.And yes , it's for a pool of 100K. Regards, Dima Gutzeit
On Wed, Sep 30, 2015 at 11:28 PM -0700, "Patrik Nordwall" <[email protected]> wrote: >From what version did you update? I can confirm that there is a problem when using pools with many routees (not only consistent hashing pools). May I ask what the use case is for a pool with 100k actors? Regards,Patrik On Wed, Sep 30, 2015 at 2:01 PM, Akka Team <[email protected]> wrote: Hi, This might actually be a regression, maybe some initialization code got n^2 unintentionally, and therefore goes wild when used with a large number of actors. I opened a ticket:https://github.com/akka/akka/issues/18613 -Endre On Tue, Sep 29, 2015 at 12:47 PM, gutzeit <[email protected]> wrote: Dear list members, Recently we have upgraded to Akka 2.3.14 and I've noticed a very strange behaviour. Right after startup we start receiving messages on our production platform, and I the logs I see that it takes several minutes for actors start processing messages.Actors in question are part of routers that are defined in the following way: /usersRouter { router = consistent-hashing-pool nr-of-instances = 100000 virtual-nodes-factor = 10}/contactsRouter { router = consistent-hashing-pool nr-of-instances = 100000 virtual-nodes-factor = 10} Doing jstack in the period that no messages are processed, the only weird thing i can see is the following: java.lang.Thread.State: RUNNABLE at scala.collection.Iterator$class.foreach(Iterator.scala:727) at scala.collection.AbstractIterator.foreach(Iterator.scala:1157) at scala.collection.IterableLike$class.foreach(IterableLike.scala:72) at scala.collection.AbstractIterable.foreach(Iterable.scala:54) at scala.collection.TraversableLike$class.filter(TraversableLike.scala:263) at scala.collection.AbstractTraversable.filter(Traversable.scala:105) at scala.collection.TraversableLike$class.filterNot(TraversableLike.scala:274) at scala.collection.AbstractTraversable.filterNot(Traversable.scala:105) at akka.routing.RoutedActorCell$$anonfun$1.apply(RoutedActorCell.scala:77) at akka.routing.RoutedActorCell$$anonfun$1.apply(RoutedActorCell.scala:77) at scala.collection.TraversableOnce$$anonfun$foldLeft$1.apply(TraversableOnce.scala:144) at scala.collection.TraversableOnce$$anonfun$foldLeft$1.apply(TraversableOnce.scala:144) at scala.collection.Iterator$class.foreach(Iterator.scala:727) at scala.collection.AbstractIterator.foreach(Iterator.scala:1157) at scala.collection.IterableLike$class.foreach(IterableLike.scala:72) at scala.collection.AbstractIterable.foreach(Iterable.scala:54) at scala.collection.TraversableOnce$class.foldLeft(TraversableOnce.scala:144) at scala.collection.AbstractTraversable.foldLeft(Traversable.scala:105) at akka.routing.RoutedActorCell.removeRoutees(RoutedActorCell.scala:77) at akka.routing.ResizablePoolCell.resize(Resizer.scala:288) at akka.routing.ResizablePoolCell.preSuperStart(Resizer.scala:267) at akka.routing.RoutedActorCell.start(RoutedActorCell.scala:123) at akka.routing.RoutedActorCell.start(RoutedActorCell.scala:41) at akka.actor.RepointableActorRef.point(RepointableActorRef.scala:105) at akka.actor.ActorCell.handleSupervise(ActorCell.scala:614) at akka.actor.ActorCell.supervise(ActorCell.scala:606) at akka.actor.ActorCell.invokeAll$1(ActorCell.scala:463) at akka.actor.ActorCell.systemInvoke(ActorCell.scala:478) at akka.dispatch.Mailbox.processAllSystemMessages(Mailbox.scala:263) at akka.dispatch.Mailbox.run(Mailbox.scala:219) at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:397) at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) After that period of "non-processing" is over, that stack trace does not appear anymore. My best guess is that it is somehow related to latest changes to consistent-hashing pool that was done lately, but then again its just a guess. Does anyone have any clue what is going on ? Thanks in advance for your help. -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout. -- Akka TeamTypesafe - Reactive apps on the JVMBlog: letitcrash.com Twitter: @akkateam -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout. -- Patrik Nordwall Typesafe - Reactive apps on the JVM Twitter: @patriknw -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to a topic in the Google Groups "Akka User List" group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/akka-user/p344JTPpIh8/unsubscribe. To unsubscribe from this group and all its topics, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout. -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
