MultiThreadedProofOfWorkProcessor doesn't use all cores

[Dissem]

From https://developer.android.com/training/multiple-threads/create-threadpool.html

Runtime.getRuntime().availableProcessors();

This number may not reflect the number of physical cores in the device; some devices have CPUs that deactivate one or more cores depending on the system load. For these devices, availableProcessors() returns the number of active cores, which may be less than the total number of cores.

[Dissem]

http://stackoverflow.com/questions/30119604/how-to-get-the-number-of-cores-of-an-android-device

[Dissem]

Cannot reproduce, on a Galaxy Nexus (Android 4.4) as well as a Moto X (6.0) all cores are used.