Hi Q, > 6 mar 2015 kl. 06:51 skrev Kyunam Kim <kim.kyu...@gmail.com>: > > Hi Roland, > > - The props is small and the actor is simple and no constructor arguments. > - I'll try to remote-deploy the router itself. But with this approach > (keeping the router & its routees on the same machine), am I going to miss > the point of being able to deploy routees over multiple machines? > - Let's assume, for now, I'm stubborn and want to stay as is. How would I > decide / what would be good practice to decide the magic # for > nr-of-instances in this case?
It is not magic at all: it defines the maximum parallelism that you allow for processing the kind of requests that you send to the router. Divide that by the time it takes to process one request and you get a rough estimate for the throughput that your system will have—adjust that to your needs by adding a little headroom to the required value. Of course the amount of available resources must match this: if your routees perform CPU intensive tasks then having more than one per CPU core does not make sense; the same goes for database calls where the DB connection pool defines your maximum parallelism (ask your friendly DB admin for details). Regards, Roland > > Thanks, > Q > > On Thursday, March 5, 2015 at 5:09:17 AM UTC-8, rkuhn wrote: > Sending many Supervise messages over the wire at once may flood that system > message channel, depending also on how large the Props are (e.g. what they > close over or how big the constructor arguments for the actor are). > > Why not remote-deploy the Router itself? There is no benefit to keeping the > Router on one machine and all its routees on exactly one other. > > Regards, > > Roland > >> 5 mar 2015 kl. 13:52 skrev Björn Antonsson <bjorn.a...@typesafe.com >> <javascript:>>: >> >> Hi, >> >> There is no hard limit on nr-of-instances. >> >> Which version of akka/scala are you using? >> >> When does the warnig message appear? Is it on the router node (local) or on >> the routee (remote) node? >> >> Do you send anything else to the remote system before going throught the >> router, or do you just start remote deploying directly? >> >> B/ >> >> On 5 March 2015 at 07:24:25, Kyunam Kim (kim.k...@gmail.com <javascript:>) >> wrote: >> >>> Is there a maximum value set for "nr-of-instances"? >>> When I set it to 300, it works fine. >>> When I set it to 400, I see "[WARN] >>> [xxx-akka.remote.default-remote-dispatcher-5] [Remoting] Association to >>> [akka.tcp://xxx@127.0.0.1:2552 <>] with unknown UID is irrecoverably >>> failed. Address cannot be quarantined without knowing the UID, gating >>> instead for 5000 ms.". >>> >>> I have one remote akka system defined in target.nodes[] and >>> round-robin-pool is used. >>> >>> Thanks in advance. >>> Q >>> -- >>> >>>>>>>>>> Read the docs: http://akka.io/docs/ <http://akka.io/docs/> >>> >>>>>>>>>> Check the FAQ: >>> >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>> >>>>>>>>>> <http://doc.akka.io/docs/akka/current/additional/faq.html> >>> >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user >>> >>>>>>>>>> <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+...@googlegroups.com <javascript:>. >>> To post to this group, send email to akka...@googlegroups.com <javascript:>. >>> Visit this group at http://groups.google.com/group/akka-user >>> <http://groups.google.com/group/akka-user>. >>> For more options, visit https://groups.google.com/d/optout >>> <https://groups.google.com/d/optout>. >> -- >> Björn Antonsson >> Typesafe Inc. <http://typesafe.com/> – Reactive Apps on the JVM >> twitter: bantonsson <http://twitter.com/bantonsson> >> >> JOIN US. REGISTER TODAY! <http://event.scaladays.org/scaladays-sanfran-2015> >> Scala <http://event.scaladays.org/scaladays-sanfran-2015> >> Days <http://event.scaladays.org/scaladays-sanfran-2015> >> March 16th-18th, <http://event.scaladays.org/scaladays-sanfran-2015> >> San Francisco <http://event.scaladays.org/scaladays-sanfran-2015> >> >> -- >> >>>>>>>>>> Read the docs: http://akka.io/docs/ <http://akka.io/docs/> >> >>>>>>>>>> Check the FAQ: >> >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >> >>>>>>>>>> <http://doc.akka.io/docs/akka/current/additional/faq.html> >> >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user >> >>>>>>>>>> <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+...@googlegroups.com <javascript:>. >> To post to this group, send email to akka...@googlegroups.com <javascript:>. >> Visit this group at http://groups.google.com/group/akka-user >> <http://groups.google.com/group/akka-user>. >> For more options, visit https://groups.google.com/d/optout >> <https://groups.google.com/d/optout>. > > > > Dr. Roland Kuhn > Akka Tech Lead > Typesafe <http://typesafe.com/> – Reactive apps on the JVM. > twitter: @rolandkuhn > <http://twitter.com/#!/rolandkuhn> > > > -- > >>>>>>>>>> Read the docs: http://akka.io/docs/ <http://akka.io/docs/> > >>>>>>>>>> Check the FAQ: > >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html > >>>>>>>>>> <http://doc.akka.io/docs/akka/current/additional/faq.html> > >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user > >>>>>>>>>> <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 > <mailto:akka-user+unsubscr...@googlegroups.com>. > To post to this group, send email to akka-user@googlegroups.com > <mailto:akka-user@googlegroups.com>. > Visit this group at http://groups.google.com/group/akka-user > <http://groups.google.com/group/akka-user>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. Dr. Roland Kuhn Akka Tech Lead Typesafe <http://typesafe.com/> – Reactive apps on the JVM. twitter: @rolandkuhn <http://twitter.com/#!/rolandkuhn> -- >>>>>>>>>> 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 http://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
