Hello Sean,
actual overhead in terms of how many bytes – depends on your serialiser.

1) Yes, a message includes the sender. Not much optimisations in there
currently, although we have nice ideas on what we can do within a cluster
(short "handles" instead of full addresses),
2) Refer to: http://doc.akka.io/docs/akka/snapshot/scala/serialization.html
Strings are a byte array, the envelope is protobuf (you can find it in
`akka-remote`), other kinds of payload is whatever you configured –
defaults to java serialisation.
3) Of the entire message? It depends on your serialiser.

Hope this helps, happy hakking :-)


On Wed, Aug 6, 2014 at 1:43 PM, Sean Zhong <[email protected]> wrote:

> Suppose I want to transfer a msg to another machine
>
> otherActor ! “hello"
>
> what is the wire message overhead?
>
> 1. the wire messge need to have information about ActorRef, will the
> ActorRef be attached for every message, or will it be cached on target
> machine, so the sender only need to attach an Id?
> 2. How string "hello" is serialized on the wire, with java serialization?
> or protobuf? Can this be configured?
> 3. What is other overhead for this message?
>
>
>
>
>
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-- 
Cheers,
Konrad 'ktoso' Malawski
hAkker @ Typesafe

<http://typesafe.com>

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