load:
        duration: 30
        unit: minute
        arrivals:
          -
            duration: 7
            users: 500
          -
            duration: 22
            users: 1000
levels:
        soft:   30
        normal: 10
        hard:   5
sessions:
  -
   name: passive
   type: connect_and_listen
   probability: 67
   variables: {}
  -
   name: active
   type: connect_and_push
   probability: 33
   variables: {}