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] [  4178/ 10566 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [10.8% done] [  8290/  4442 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [13.5% done] [  7364/  5072 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [16.7% done] [ 13103/   827 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [19.4% done] [  8278/  3485 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [21.1% done] [  7215/  2079 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [24.3% done] [  2233/ 10247 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [26.3% done] [  7400/  2016 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.9% done] [  7530/  3623 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.8% done] [  9464/   669 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  6585/  4076 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  5517/  4111 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  5911/  3205 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  5234/  6147 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.5% done] [  6561/  1894 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.9% done] [  4706/  3867 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [45.2% done] [  1264/  7746 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.5% done] [  3074/  4695 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [48.8% done] [  5710/  2638 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  3430/  4367 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [52.3% done] [  3879/  3166 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  2516/  4182 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.3% done] [  4608/  2508 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.2% done] [  6908/   212 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [58.3% done] [  4505/  2426 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [59.2% done] [  3926/  3387 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [61.2% done] [  7164/    63 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [62.0% done] [  5901/  1580 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16226, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16227, got signal=6
Threads: 1: [m__] [64.0% done] [  1500/  5754 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16225, got signal=6

fio: (groupid=0): err= 0: pid=16225
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=1.6%, 4=22.3%, 8=75.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.0%, 10=0.1%, 20=4.2%, 50=18.3%, 100=6.6%
     lat (msec): 250=60.7%, 500=7.4%, 750=0.6%, 1000=0.8%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16226
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.5%, 4=21.1%, 8=77.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.0%, 10=0.0%, 20=2.7%, 50=20.1%, 100=6.0%
     lat (msec): 250=60.7%, 500=8.6%, 750=0.8%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16227
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.9%, 4=18.1%, 8=80.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.1%, 20=1.5%, 50=13.7%, 100=7.4%
     lat (msec): 250=69.0%, 500=6.7%, 750=0.3%, 1000=0.7%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3328/2123, merge=603/281, ticks=77464/41108, in_queue=118576, util=98.97%
0.10user 0.19system 0:33.31elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2513minor)pagefaults 0swaps