text: [
   {'name':      'no-ack',
    'type':      'simple',
    'params':    [{'time-limit':     30}]},
  
   {'name':      'message-sizes-and-producers',
    'type':      'varying',
    'params':    [{'time-limit':     30,
                   'consumer-count': 0}],
    'variables': [{'name':   'min-msg-size',
                   'values': [0, 1000, 10000, 100000]},
                  {'name':   'producer-count',
                   'values': [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]}]},
  
   {'name':      'message-sizes-large',
    'type':      'varying',
    'params':    [{'time-limit': 30}],
    'variables': [{'name':   'min-msg-size',
                   'values': [5000, 10000, 50000, 100000, 500000, 1000000]}]},
  
  {'name':      'rate-vs-latency',
    'type':      'rate-vs-latency',
    'params':    [{'time-limit': 30}]}]