The dispacter is probably a bottleneck, looking at the paper http://lamp.epfl.ch/~phaller/doc/haller07actorsunify.pdf http://lamp.epfl.ch/~phaller/doc/haller07a

The dispacter is probably a bottleneck, looking at the paper http://lamp.epfl.ch/~phaller/doc/haller07actorsunify.pdf http://lamp.epfl.ch/~phaller/doc/haller07actorsunify.pdf I can't really tell how it's implemented. How does the Scala run queue work? eg have a look at the Erlang article I linked to in my first post.