2019-04-30 09:50:35,790 INFO fs.TestDFSIO:             Date & time: Tue Apr 30 09:50:35 EDT 2019
2019-04-30 09:50:35,791 INFO fs.TestDFSIO:         Number of files: 100
2019-04-30 09:50:35,791 INFO fs.TestDFSIO:  Total MBytes processed: 10000
2019-04-30 09:50:35,791 INFO fs.TestDFSIO:       Throughput mb/sec: 376.9
2019-04-30 09:50:35,791 INFO fs.TestDFSIO:  Average IO rate mb/sec: 387.16
2019-04-30 09:50:35,791 INFO fs.TestDFSIO:   IO rate std deviation: 60.42
2019-04-30 09:50:35,791 INFO fs.TestDFSIO:      Test exec time sec: 115.21```
Is `Average IO rate mb/sec` in MegaByte or Megabits?