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] [8.3% done] [  7976/  5360 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [10.8% done] [  9820/  3060 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [13.9% done] [ 11488/  2012 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [16.7% done] [  5928/  8628 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [19.4% done] [  8816/  2820 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [21.6% done] [  4188/  7012 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [24.3% done] [  8064/  3476 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.0% done] [  6944/  3992 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [28.9% done] [  5521/  5409 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [31.6% done] [  7404/  2804 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  2008/  7400 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  2380/  8368 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  3296/  7024 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  7488/  2680 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.5% done] [  4400/  3820 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.9% done] [  3196/  6368 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  4392/  3848 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  3892/  3812 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  5840/  2440 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  4584/  1732 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  3012/  3312 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  4092/  2864 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.6% done] [  3780/  2336 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.5% done] [  2692/  5232 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.2% done] [  4948/  2104 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [57.1% done] [  2236/  5472 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12073, got signal=6
Threads: 2: [_mm] [56.9% done] [  4552/  2792 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12074, got signal=6
Threads: 1: [__m] [58.8% done] [  1324/  6452 kb/s] [eta 00m:21s]
Threads: 1: [__m] [64.6% done] [  3772/  4384 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12075, got signal=6

fio: (groupid=0): err= 0: pid=12073
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.2%, 4=19.6%, 8=79.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.7%, 20=3.6%, 50=17.1%, 100=7.6%
     lat (msec): 250=65.3%, 500=5.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12074
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.6%, 4=19.3%, 8=77.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.0%, 10=1.4%, 20=4.5%, 50=16.1%, 100=2.9%
     lat (msec): 250=66.3%, 500=7.2%, 750=0.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12075
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.6%, 4=20.2%, 8=76.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.3%, 4=0.0%, 10=1.5%, 20=3.1%, 50=23.0%, 100=2.9%
     lat (msec): 250=59.2%, 500=7.1%, 750=0.4%, 1000=0.4%, >=2000=0.6%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2873/2622, merge=518/498, ticks=65028/41220, in_queue=106248, util=99.06%
0.10user 0.21system 0:32.90elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2515minor)pagefaults 0swaps