I am a newbie to akka, so please excuse me if this sounds like a dumb 
question.
I am trying to understand akka's default dispatcher configuration with 
fork-join-pool executor.

I have 8 core cpu and this is my dispatcher configuration,

akka.actor.default-dispatcher {

    fork-join-executor {

        parallelism-factor = 4.0

        parallelism-min = 4

        parallelism-max = 64

    }

}


My understanding is the with the above configuration is,


base-no of threads that will be created = (8 * 4.0) ~ 32 threads

min-no of threads to keep alive = 4 threads

max-no of threads that can ever be created = 64 threads


Is this correct ?


I am finding contradicting informations the net like the max-no of threads 
that can be created will be (parallelism-max * factor) ~  (64 * 4.0) = 256 
threads.

Could someone please explain what does parallelism-max and parallelism-min 
numbers mean ?


Also on the startup, will the base-no of threads or min-no of threads be 
created ?


Thanks in advance.






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