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] [ 12037/  4079 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [11.4% done] [ 14900/  2836 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [15.2% done] [ 10731/  3535 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [16.7% done] [  9585/  4608 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [18.9% done] [  9171/  4047 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [21.1% done] [  7354/  5428 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [23.7% done] [  5766/  7529 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [26.3% done] [  6672/  6424 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [29.7% done] [  5310/  8236 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [31.6% done] [  7228/  5461 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  6420/  4880 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  6538/  5644 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  7493/  3250 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [39.0% done] [  4682/  6492 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.5% done] [  4473/  5160 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.9% done] [  3417/  6107 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [42.2% done] [  2738/  6022 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [43.5% done] [  4079/  4559 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [43.8% done] [  6355/  1105 kb/s] [eta 00m:27s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3614, got signal=6
Threads: 2: [m_m] [46.8% done] [  2580/  6684 kb/s] [eta 00m:25s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [m_m] [47.9% done] [  4177/  3001 kb/s] [eta 00m:25s]
fio: pid=3615, got signal=6
Threads: 1: [m__] [54.5% done] [  9606/     0 kb/s] [eta 00m:20s]
Threads: 1: [m__] [59.5% done] [  7879/     0 kb/s] [eta 00m:17s]
Threads: 1: [m__] [65.0% done] [  8013/     0 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3613, got signal=6

fio: (groupid=0): err= 0: pid=3613
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.8%, 4=23.1%, 8=74.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.6%, 20=3.1%, 50=45.0%, 100=12.6%
     lat (msec): 250=20.9%, 500=14.4%, 750=1.5%, 1000=1.3%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=3614
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.8%, 4=28.4%, 8=69.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.2%, 10=0.7%, 20=4.3%, 50=24.1%, 100=19.5%
     lat (msec): 250=47.1%, 500=3.1%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3615
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.3%, 4=32.3%, 8=63.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.7%, 10=2.0%, 20=5.7%, 50=17.8%, 100=25.0%
     lat (msec): 250=42.6%, 500=4.5%, 750=0.4%, 1000=0.4%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3334/2438, merge=793/66, ticks=50924/35160, in_queue=86080, util=98.94%
0.22user 0.25system 0:27.39elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2488minor)pagefaults 0swaps