i fired up htop and noticed that when i execute th...

# coroutines

[nimtiazm]

i fired up htop and noticed that when i execute the java program all CPUs’ hit 100% consumption while in kotlin programs they hit 91% or 95% and in between

[elizarov]

That's how FJP.commonPool works by default. It uses n-1 threads. There is some system property to configure its parallelism. Or you can use newThreadPoolContext with Runtime.availableProcessors threads.