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] [ 12434/     0 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [11.1% done] [ 10286/  3377 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [14.3% done] [  8451/  4663 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [16.7% done] [ 10664/  2141 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [18.9% done] [  7856/  4529 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [21.1% done] [  7957/  2893 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [23.7% done] [  9455/  1552 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [25.0% done] [  5794/  3084 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [26.8% done] [  4989/  5469 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [29.3% done] [  7988/  2503 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [31.7% done] [  8232/  1540 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [33.3% done] [  7814/  2340 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [35.7% done] [  4754/  4782 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [38.1% done] [  7310/  2937 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [39.5% done] [  2612/  5107 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [41.9% done] [  6570/  2076 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [43.2% done] [  5039/  3583 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [44.4% done] [  5107/  3055 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [46.7% done] [  4562/  3483 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [48.9% done] [  2802/  6444 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [50.0% done] [  3409/  2941 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [52.2% done] [  6135/  1536 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [53.2% done] [  2133/  4713 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [54.2% done] [  4083/  1389 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [55.1% done] [  2027/  4733 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [57.1% done] [  4156/  2584 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [58.0% done] [  4510/  2198 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [58.8% done] [   670/  6737 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [59.6% done] [  2580/  4356 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] [62.7% done] [  3848/  3043 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17813, got signal=6
Threads: 2: [_mm] [66.7% done] [  2175/   112 kb/s] [eta 00m:17s]
fio: pid=17814, got signal=6
fio: pid=17815, got signal=6

fio: (groupid=0): err= 0: pid=17813
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.9%, 4=16.8%, 8=82.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=1.0%, 10=0.8%, 20=5.4%, 50=12.7%, 100=9.8%
     lat (msec): 250=62.2%, 500=7.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17814
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.4%, 4=14.8%, 8=83.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=1.5%, 10=0.7%, 20=4.2%, 50=14.5%, 100=4.6%
     lat (msec): 250=63.6%, 500=9.0%, 750=0.7%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17815
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=11.3%, 8=88.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.8%, 20=1.4%, 50=11.0%, 100=5.8%
     lat (msec): 250=72.8%, 500=6.6%, 750=0.7%, 1000=0.2%, >=2000=0.3%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3175/2436, merge=643/343, ticks=77764/40760, in_queue=118524, util=97.33%
0.12user 0.30system 0:34.82elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2523minor)pagefaults 0swaps