@startuml

rectangle JMV {
  rectangle JvmThread1
  rectangle JvmThread2
  rectangle JvmThread3
}

rectangle OS {
  rectangle OSThread1
  rectangle OSThread2
  rectangle OSThread3

  rectangle Scheduler

  Scheduler -up- OSThread1
  Scheduler -up- OSThread2
  Scheduler -up- OSThread3
}

  OSThread1 -up- JvmThread1
  OSThread2 -up- JvmThread2
  OSThread3 -up- JvmThread3

@enduml
