fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
...
fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
Starting 3 threads
Threads: 3
Threads: 3
Threads: 3: [mmm] [8.6% done] [  7640/ 10408 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [11.8% done] [ 11347/  3623 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [14.7% done] [ 11436/  4666 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [17.6% done] [  8546/  6264 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.0% done] [  8714/  5549 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [21.6% done] [  8395/  2905 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [23.7% done] [  9085/  4295 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [26.3% done] [  1967/ 11765 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [29.7% done] [  4888/  7586 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [31.6% done] [  7643/  5217 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [34.2% done] [  8712/  3425 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.9% done] [  5436/  6245 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [38.5% done] [  5619/  5931 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.0% done] [  3417/  7793 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.6% done] [  5115/  5225 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [45.0% done] [  4616/  4128 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.5% done] [  4907/  3821 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  4742/  4221 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [52.5% done] [  4985/  3714 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [55.0% done] [  4165/  3770 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [56.1% done] [  4441/  3153 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18340, got signal=6
Threads: 2: [m_m] [58.5% done] [  1345/  7537 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18341, got signal=6
Threads: 1: [m__] [61.0% done] [  1873/  6745 kb/s] [eta 00m:16s]
Threads: 1: [m__] [66.7% done] [  3083/  4691 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18339, got signal=6

fio: (groupid=0): err= 0: pid=18339
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=2.6%, 4=35.1%, 8=61.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.8%, 10=2.1%, 20=8.1%, 50=23.5%, 100=17.1%
     lat (msec): 250=32.2%, 500=14.3%, 750=0.9%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18340
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.6%, 4=27.7%, 8=69.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.4%, 10=0.9%, 20=4.3%, 50=14.0%, 100=25.7%
     lat (msec): 250=50.5%, 500=2.8%, 750=0.7%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18341
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=2.3%, 4=31.4%, 8=65.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.7%, 10=0.8%, 20=3.7%, 50=11.1%, 100=27.9%
     lat (msec): 250=50.7%, 500=4.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2883/2904, merge=778/171, ticks=55604/52796, in_queue=108400, util=99.06%
0.23user 0.34system 0:26.96elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2498minor)pagefaults 0swaps