I don't know about the serialization. Sounds strange.
However, note that consistent hashing pool often doesn't make much sense in
a cluster, since routees of the pools are not shared between different
nodes. Group router is typically better, or Cluster Sharding if more strict
routing is needed.
/Patrik
lör 22 juli 2017 kl. 10:36 skrev Assaf A <assaf.abula...@gmail.com>:
> Hi,
>
> My application has a cluster router pool of stateful actors using
> consistent hashing,
> the app may work as a single node or scale out with multiple nodes.
> The router passes an object that implements consistent hashable which
> returns an integer as the hashing key.
> (the object itself has about 20 string and int fields, and 4 domain
> fields. both the object and the domain references are serialized using kryo)
>
> I did some profiling of the app while working with a single node,
> and it seems that the app spends a lot of cpu serializing using the java
> serializer within the ConsistentHashingRoutingLogic class.
>
> When running as a single node, I didn't expect to see any serialization
> taking place,
> is it something that the ConsistentHashingRoutingLogic does because I'm
> using it within a cluster router?
>
> Since I wrote the app 3 years ago, I've noticed that akka sharding was
> released.
> would using sharding minimize serialization when the traffic belongs on
> the same node?
>
> Is there a difference between using a consistent hashing router and using
> akka sharding in this use case?
>
>
>
> router configuration:
>
> actorSystem.actorOf(
> new ClusterRouterPool(new ConsistentHashingPool(totalInstances),
> new ClusterRouterPoolSettings(totalInstances, *threads*,
> true,
> useRole)).props(Props.create(MyRouter.class)).withDispatcher("router-dispatcher"),
> "myRouter");
>
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