You can try and compare Balance, Partition and PartitionHub.
/Patrik
> On Sep 19, 2017, at 00:16, Jakub Liska <liska.ja...@gmail.com> wrote:
>
> Hey,
>
> having an operation that heavily utilizes CPU and RAM, nothing else (no IO),
> but it is a main bottleneck, then it never pays off using `stream.mapAsync`
> for it unless you batch operations by something like 10 000, so I started
> using stuff like :
>
> .map(operation).withAttributes(
> Attributes.asyncBoundary
> .and(Attributes.inputBuffer(16,32))
> .and(ActorAttributes.dispatcher("pinned-dispatcher"))
> )
>
> that is usually at least 3x more effective than `mapAsyncUnordered(4)`, but
> it still utilizes only one CPU core.
>
> Can you think of anything better than this or how to improve the above ^^ ?
>
> One way would be probably to split the flow into 4 substreams which would
> lead to utilizing 4 cores, right ? So is akka.stream.scaladsl.Balance the way
> to tackle this challange?
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