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] [7.5% done] [ 11048/  4518 kb/s] [eta 00m:37s]
Threads: 3: [mmm] [10.3% done] [ 12820/  4563 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [13.2% done] [ 10227/  7094 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [15.8% done] [  8496/  3835 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [20.0% done] [  6956/  7761 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [23.5% done] [  5924/  8001 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [25.7% done] [  7163/  5485 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [27.8% done] [ 11605/  1470 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [29.7% done] [  8330/  3096 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [31.6% done] [  9853/  3876 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [34.2% done] [  5310/  6111 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.9% done] [  8216/  3722 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  2596/  8923 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  8606/  1759 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.5% done] [  6660/  2283 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  4754/  5120 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  3770/  4477 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.5% done] [  1572/  8074 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  1462/  6221 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [51.2% done] [  1377/  8273 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.5% done] [  5067/  1540 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [53.3% done] [  2893/  3734 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17911, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17912, got signal=6
Threads: 1: [m__] [58.1% done] [  7541/   820 kb/s] [eta 00m:18s]
Threads: 1: [m__] [63.4% done] [  7927/     0 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17910, got signal=6

fio: (groupid=0): err= 0: pid=17910
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.0%, 4=38.1%, 8=59.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.1%, 10=0.4%, 20=4.9%, 50=36.5%, 100=12.3%
     lat (msec): 250=29.5%, 500=14.3%, 750=1.1%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17911
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.7%, 4=37.7%, 8=58.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.0%, 10=1.6%, 20=3.7%, 50=16.7%, 100=23.9%
     lat (msec): 250=47.7%, 500=4.9%, 750=0.3%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17912
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.4%, 4=28.0%, 8=69.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.9%, 20=2.0%, 50=13.5%, 100=28.8%
     lat (msec): 250=50.3%, 500=3.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3478/2329, merge=399/254, ticks=60228/41360, in_queue=101588, util=98.89%
0.26user 0.45system 0:27.53elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2507minor)pagefaults 0swaps