Try the following, these values work great,
you can try higher but I don't think it is going to help because the most
of the bottleneck is because of design,
a problem related with how akka-remote is designed around Netty, but that
will change soon: https://github.com/akka/akka-meta/issues/22
akka.remote.default-remote-dispatcher {
type = Dispatcher
executor = "fork-join-executor"
fork-join-executor {
parallelism-min = 4
parallelism-factor = 1
parallelism-max = 8
}
}
Also, what serialization are you using? Hopefully is the not default Java
serialization, most people use Kryo serialization.
Non-related but could help:
- Set Akka version to "2.3.15" (next week 2.3.16 is probably going to be
released)
- Set Netty version to "3.10.6.Final" which will be part of next release.
See https://github.com/netty/netty/issues?q=milestone%3A3.10.6.Final
and https://github.com/akka/akka/pull/20857
HTH,
Guido.
On Saturday, July 2, 2016 at 12:14:24 AM UTC+1, Eduardo Fernandes wrote:
>
> Hi.
>
> I'm using Akka 2.3.13, Java edition.
>
> I'm making some performance tests and in the same machine with 8 cores I
> see that the serialization process is my bottleneck. I know that because
> after an increment of actor cpu usage the throughput is exactly the same.
>
> My actor system talks to 2 other nodes so I see 2 cores dedicated to
> serialization. Is is possible to increase the number of threads for
> serialization?
>
> I'm using standard Java serialization but I have my own serialization
> implementation in my write/readObject methods so I think that switching to
> kryo or similar will not enhance too much the throughput.
>
> Many thanks for your help.
>
> /Eduardo
>
>
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