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] [ 12672/     0 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [11.8% done] [  7536/  5660 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [14.7% done] [ 12904/  1380 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [17.1% done] [  8324/  4268 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [20.0% done] [  4496/  9000 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.2% done] [  8160/  2628 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.7% done] [  5132/  7172 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [28.6% done] [  2038/ 10857 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [29.7% done] [  4750/  4599 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [32.4% done] [  6132/  3568 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [34.2% done] [  4928/  5412 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.9% done] [  8172/   700 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  6164/  3940 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  5601/  2826 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.5% done] [  3483/  6530 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.0% done] [  6712/  1972 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.3% done] [  4664/  3248 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  4396/  3263 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  6392/   456 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  5896/  1232 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  3468/  3732 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  2037/  4164 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.3% done] [  3848/  2612 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.3% done] [  6550/   924 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.2% done] [  3447/  3515 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [57.1% done] [  6644/   348 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11605, got signal=6
Threads: 2: [_mm] [56.9% done] [  2708/  6364 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11606, got signal=6
Threads: 1: [__m] [58.8% done] [  2256/  5580 kb/s] [eta 00m:21s]
Threads: 1: [__m] [63.3% done] [  3196/  3508 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] [  3072/  2960 kb/s] [eta 00m:16s]
fio: pid=11607, got signal=6

fio: (groupid=0): err= 0: pid=11605
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.7%, 4=19.7%, 8=79.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.6%, 20=1.0%, 50=22.7%, 100=7.6%
     lat (msec): 250=63.3%, 500=4.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11606
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=2.3%, 4=18.6%, 8=78.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.0%, 10=3.1%, 20=4.3%, 50=12.6%, 100=3.3%
     lat (msec): 250=67.1%, 500=7.0%, 750=0.9%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11607
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.1%, 4=21.2%, 8=76.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.1%, 4=0.0%, 10=2.3%, 20=2.6%, 50=24.2%, 100=2.9%
     lat (msec): 250=60.0%, 500=4.9%, 750=1.0%, 1000=0.5%, >=2000=0.2%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3147/2453, merge=594/273, ticks=72900/39828, in_queue=112724, util=98.71%
0.14user 0.28system 0:33.27elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2515minor)pagefaults 0swaps