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] [  7896/  4204 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [10.5% done] [  7916/  5024 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [13.2% done] [  2648/ 11448 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [16.7% done] [  7757/  5912 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [19.4% done] [  7736/  4072 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [21.6% done] [  8689/  2819 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [25.0% done] [  3836/  8764 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.8% done] [  8784/  2196 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [30.6% done] [  6796/  4612 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [32.4% done] [  6116/  3892 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [34.2% done] [  5197/  4212 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [36.8% done] [  5296/  4644 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [37.5% done] [  5872/  3396 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.0% done] [  5552/  4092 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.5% done] [  5031/  3021 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.0% done] [  2403/  6790 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.3% done] [  3912/  4764 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  3280/  2516 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  4472/  2840 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  1620/  6100 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  5224/  1948 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.5% done] [  1484/  5076 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [55.6% done] [  2452/  5940 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [55.3% done] [  2848/  4448 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.2% done] [  4880/  1816 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [57.1% done] [  5676/  1328 kb/s] [eta 00m:21s]
fio: pid=5154, got signal=6
Threads: 2: [_mm] [59.2% done] [  5892/   752 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [58.8% done] [  7056/     0 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5155, got signal=6
Threads: 1: [__m] [63.3% done] [  1456/  7060 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [__m] [66.7% done] [  2928/  3836 kb/s] [eta 00m:16s]
fio: pid=5156, got signal=6

fio: (groupid=0): err= 0: pid=5154
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.6%, 4=21.7%, 8=77.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.8%, 20=2.5%, 50=19.3%, 100=11.4%
     lat (msec): 250=61.0%, 500=4.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5155
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=0.9%, 4=18.6%, 8=80.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.6%, 20=2.1%, 50=22.1%, 100=5.3%
     lat (msec): 250=59.6%, 500=9.0%, 750=0.4%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5156
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.2%, 4=19.1%, 8=78.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.0%, 10=1.4%, 20=3.4%, 50=16.9%, 100=5.8%
     lat (msec): 250=59.5%, 500=9.8%, 750=1.2%, 1000=0.6%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3067/2435, merge=430/448, ticks=68696/42880, in_queue=111576, util=98.13%
0.11user 0.25system 0:33.55elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2516minor)pagefaults 0swaps