I'm also very interested in your benchmark result. Carsten, please share more data when they are ready. Have you tried a customized serializer for your message? I wonder if the default Java serializer is too slow.
On Sunday, March 16, 2014 1:17:05 AM UTC+8, Carsten Saathoff wrote: > > Hi, > > I am currently evaluating akka-persistence, specifically with respect to > its throughput. I want to use it in a system consisting of approximately > 1000000 actors, each representing an aggregate root, distributed over a > sharded cluster of actor systems. Each of these actors should become a > processor (or probably an eventsourced processor). So I am interested in > how many messages a single actor system can persist per second. In a > typical scenario each actor will receive a single message, but I want the > time the system takes to persist all messages to be as short as possible. > > I wrote a simple test case without any sharding, but having a similar > internal structure: > https://github.com/kodemaniak/akka-persistence-throughput-test > > A sender sends messages to each ID in the system. All messages pass > through a region actor which routes the messages according to the id > contained therein and which creates a child actor per ID on demand. I am > able to persist 2500-3000 msgs per second on my MacBook Pro (Mid 2010) with > a SSD when the actors are recovered. During recovery it is around 1000 > msgs/second. > > When I replace the region actor with a single receiver that receives and > persists all messages, the throughput increases by one magnitude, i.e., > >20k msgs/s when the actor is initialized. > > My assumption would have been that throughput is independent of the number > of actors persisting messages. And in any case, I would not have expected > one magnitude difference. Additionally, both numbers seem to be lower that > what I've read before about the performance (50k msgs/s IIRC, though that's > obviously hardware dependent), although the numbers with a single processor > are very close. > > Am I doing anything wrong or are the numbers as expected? Is it a bad idea > to have many processors in a system? Are there any official benchmarks > available, maybe with code? > > Thanks and best regards > > Carsten > -- >>>>>>>>>> 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.
