I looked at https://www.playframework.com/documentation/2.4.x/JavaAkka#Configuration
It talks about only 2 parameters akka.actor.default-dispatcher.fork-join-executor.pool-size-max = 64 akka.actor.debug.receive = on I looked up these parameters on http://doc.akka.io/docs/akka/snapshot/general/configuration.html but could not find the parameters. My current config is akka { loggers = ["akka.event.slf4j.Slf4jLogger"] loglevel = "DEBUG" logging-filter = "akka.event.slf4j.Slf4jLoggingFilter" event-handlers = ["akka.event.slf4j.Slf4jEventHandler"] default-dispatcher { fork-join-executor { parallelism-factor = 1.0 parallelism-max = 24 task-peeking-mode = LIFO } } } I have only one processor in my server. So, I guess parallelism-factor = 1.0 is blocking creation of enough threads for actors. I will try parallelism-factor = 3.0 and watch it for some time if that helps. Please let me know if I should try something else. Regards, Suraj -- >>>>>>>>>> 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 akka-user+unsubscr...@googlegroups.com. To post to this group, send email to akka-user@googlegroups.com. Visit this group at https://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.