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] [10.0% done] [  9044/  7520 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [11.8% done] [  3752/ 13040 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [15.2% done] [ 12272/  2296 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.0% done] [ 11792/  3696 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [22.6% done] [ 10704/  2188 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [26.7% done] [ 14768/     0 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [28.1% done] [  7860/  4136 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [30.3% done] [  5121/  7171 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [32.4% done] [  8384/  4836 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [34.3% done] [  6132/  5976 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [37.1% done] [  9148/  2820 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [38.9% done] [  6392/  5656 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [41.7% done] [  6420/  5316 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [43.2% done] [  8932/  1512 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [45.9% done] [  8328/  1992 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [48.6% done] [  5240/  3296 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [50.0% done] [  3724/  4860 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [51.3% done] [  6448/  2152 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [52.5% done] [  1388/  7388 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [53.7% done] [  4328/  4448 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [54.8% done] [  3720/  4520 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [57.1% done] [  1808/  6152 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12366, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12367, got signal=6
Threads: 1: [m__] [61.0% done] [  2104/  5548 kb/s] [eta 00m:16s]
Threads: 1: [m__] [66.7% done] [  1490/  7332 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12365, got signal=6

fio: (groupid=0): err= 0: pid=12365
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=4.1%, 4=38.9%, 8=56.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.0%, 4=0.1%, 10=2.9%, 20=5.5%, 50=27.0%, 100=10.8%
     lat (msec): 250=37.5%, 500=13.0%, 750=1.7%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12366
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.6%, 4=31.2%, 8=64.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.0%, 4=0.0%, 10=1.3%, 20=2.9%, 50=18.3%, 100=25.0%
     lat (msec): 250=49.0%, 500=2.0%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12367
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.1%, 2=4.2%, 4=34.2%, 8=60.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=1.6%, 20=2.9%, 50=14.6%, 100=27.8%
     lat (msec): 250=47.5%, 500=4.2%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3167/2660, merge=691/236, ticks=60348/49748, in_queue=110096, util=98.70%
0.16user 0.43system 0:27.46elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2494minor)pagefaults 0swaps