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] [8.1% done] [ 10356/  2564 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [10.8% done] [  9016/  4255 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [13.9% done] [  9606/  3585 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [16.7% done] [  7287/  7144 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [19.4% done] [  6420/  6320 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [21.6% done] [  5212/  6728 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [23.7% done] [  4840/  5872 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [26.3% done] [  4416/  7020 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.9% done] [  4351/  6399 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [31.6% done] [  1924/  7692 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  5276/  5808 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  5244/  2288 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  4376/  5976 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [39.0% done] [  5040/  4220 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.5% done] [  5636/  3536 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.9% done] [  1200/ 10220 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  4196/  4292 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.6% done] [  7644/     0 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  5072/  3420 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  4584/  2084 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  3932/  4020 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  1500/  5904 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.6% done] [  1588/  5652 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [55.3% done] [  1320/  6911 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.2% done] [  4795/  2145 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3038, got signal=6
Threads: 2: [_mm] [57.1% done] [  4036/  3760 kb/s] [eta 00m:21s]
Threads: 2: [_mm] [56.9% done] [  1124/  7260 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3039, got signal=6
Threads: 1: [__m] [60.0% done] [  4496/  2848 kb/s] [eta 00m:20s]
Threads: 1: [__m] [66.0% done] [  4116/  3736 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3040, got signal=6

fio: (groupid=0): err= 0: pid=3038
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.3%, 4=22.0%, 8=76.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.0%, 10=0.5%, 20=3.8%, 50=19.2%, 100=9.7%
     lat (msec): 250=59.0%, 500=6.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3039
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.4%, 4=19.2%, 8=77.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.0%, 4=0.0%, 10=1.3%, 20=4.7%, 50=15.7%, 100=4.5%
     lat (msec): 250=62.5%, 500=8.3%, 750=1.3%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3040
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.4%, 4=21.8%, 8=76.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=1.6%, 20=4.9%, 50=21.3%, 100=3.1%
     lat (msec): 250=58.9%, 500=7.4%, 750=1.2%, 1000=0.6%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2795/2697, merge=402/543, ticks=67660/43440, in_queue=111148, util=99.04%
0.09user 0.28system 0:32.44elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2517minor)pagefaults 0swaps