What is a general good practice for configuring core-pool-size-factor and max-pool-size-factor settings?

Question

For example, if the CPU has four cores and eight core threads.

• Should I set the core-pool-size-factor setting all the way to 8?
• What's a good general size for max-pool-size-factor in relation to core-pool-size-factor?
• Are there any other settings the ones I mentioned are related to withing Akka config?

Answer 1

core-pool-size-factor of 1.0 will be 1.0 x number of logical processors available to the runtime.

max-pool-size-factor should be the same as core-pool-size-factor unless you have a bounded queue for the pool (ThreadPoolExecutor does not grow the pool unless the queue is bounded)