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] [ 13284/  2748 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [12.5% done] [ 11936/  4404 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [15.2% done] [  7736/  8648 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [19.4% done] [ 10444/  4604 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [21.2% done] [  6000/  8932 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [22.9% done] [  6780/  6176 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [24.3% done] [  7512/  6536 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.0% done] [  4356/  9796 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [29.7% done] [  5980/  5328 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [31.6% done] [  5048/  7672 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [34.2% done] [  9180/  2792 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.9% done] [  5568/  5608 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [38.5% done] [  5624/  4748 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [40.0% done] [  5845/  5173 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.5% done] [  8092/   848 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.0% done] [  3400/  6540 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.3% done] [  3092/  5276 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  6264/  1544 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  2212/  6236 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [50.0% done] [  3264/  4692 kb/s] [eta 00m:22s]
fio: pid=1342, got signal=6
Threads: 2: [m_m] [51.1% done] [  1404/  5212 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1343, got signal=6
Threads: 1: [m__] [57.1% done] [  4612/  5688 kb/s] [eta 00m:18s]
Threads: 1: [m__] [62.5% done] [  7584/   604 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [m__] [66.7% done] [  4152/  3096 kb/s] [eta 00m:13s]
fio: pid=1341, got signal=6

fio: (groupid=0): err= 0: pid=1341
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.9%, 4=33.7%, 8=64.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=1.0%, 20=5.7%, 50=37.5%, 100=9.8%
     lat (msec): 250=30.3%, 500=12.1%, 750=2.7%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1342
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.7%, 4=25.5%, 8=71.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.1%, 10=1.1%, 20=3.4%, 50=12.5%, 100=25.9%
     lat (msec): 250=52.2%, 500=3.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1343
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.1%, 4=37.1%, 8=59.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.3%, 10=1.6%, 20=5.4%, 50=17.7%, 100=23.8%
     lat (msec): 250=46.7%, 500=3.6%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2935/2809, merge=314/445, ticks=50868/144168, in_queue=195036, util=98.99%
0.23user 0.37system 0:27.02elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2502minor)pagefaults 0swaps