DispatcherSequential vs IO

KKResearchDispatcherSequentialVsIO.scala

object KKResearchDispatcherSequentialVsIO extends IOApp.Simple {
  val n = 1000_000
  val tasks = ArraySeq.fill(n)(IO.unit)

  def run: IO[Unit] = {

    val viaDispatcher = Dispatcher.sequential[IO](await = true).use { dispatcher =>
      IO(tasks.foreach(dispatcher.unsafeRunAndForget))
    }

    val withinIORuntime = tasks.parSequence_

    //viaDispatcher.timed.map(_._1.toMillis).flatMap(IO.println).foreverM
    withinIORuntime.timed.map(_._1.toMillis).flatMap(IO.println).foreverM
  }
}