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] [9.4% done] [ 13259/  3783 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [13.3% done] [  7363/  9191 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [16.7% done] [  8411/  7549 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [18.8% done] [  4998/ 10752 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [21.2% done] [  1840/ 13693 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [24.2% done] [  8915/  4559 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [25.0% done] [  6937/  3371 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.8% done] [  8894/  3994 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [30.6% done] [  7761/  4522 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [33.3% done] [ 11552/  1710 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [36.1% done] [  8354/  3872 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [36.8% done] [  6505/  4994 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [40.5% done] [  5757/  6901 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [41.0% done] [  4518/  5627 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [44.7% done] [  8126/  2547 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [46.2% done] [  7688/  1763 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.5% done] [  1913/  8017 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.8% done] [  3795/  4725 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  6761/  1154 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8600, got signal=6
Threads: 2: [m_m] [51.2% done] [  5542/   828 kb/s] [eta 00m:21s]
Threads: 2: [m_m] [53.5% done] [  7285/     0 kb/s] [eta 00m:20s]
Threads: 2: [m_m] [55.8% done] [  4136/  2413 kb/s] [eta 00m:19s]
Threads: 2: [m_m] [58.1% done] [  6891/     0 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8601, got signal=6
Threads: 1: [m__] [63.4% done] [  5934/  2236 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8599, got signal=6

fio: (groupid=0): err= 0: pid=8599
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.9%, 4=27.3%, 8=70.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.7%, 10=1.3%, 20=4.5%, 50=24.2%, 100=22.3%
     lat (msec): 250=32.5%, 500=12.0%, 750=1.4%, 1000=0.5%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8600
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.4%, 4=28.3%, 8=70.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.9%, 10=0.6%, 20=3.6%, 50=15.8%, 100=30.4%
     lat (msec): 250=44.3%, 500=3.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8601
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.7%, 4=18.7%, 8=80.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.4%, 20=1.0%, 50=9.6%, 100=31.7%
     lat (msec): 250=53.0%, 500=3.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3478/2287, merge=383/333, ticks=56420/45496, in_queue=101908, util=99.06%
0.25user 0.34system 0:27.44elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2511minor)pagefaults 0swaps