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] [  4840/  9652 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [11.1% done] [  8212/  3508 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [14.3% done] [  6488/  7272 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [17.1% done] [  5237/  9204 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [19.4% done] [  4503/  7125 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [22.9% done] [  4232/  7491 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [25.7% done] [  3932/  8172 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [27.8% done] [  6088/  5496 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [28.9% done] [  5128/  5516 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [31.6% done] [  6108/  3072 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  7836/  2024 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  5740/  3652 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [38.5% done] [  4208/  5004 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [40.0% done] [  4828/  4768 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.5% done] [  4372/  4632 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.9% done] [  6316/  1588 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  6496/  2052 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.6% done] [  4604/  3588 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  3056/  5556 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  1312/  6872 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  5048/  1680 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  3304/  2876 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.3% done] [  3576/  3244 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.5% done] [  1388/  6652 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.4% done] [  5229/  1749 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [58.3% done] [  3528/  3056 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [59.2% done] [  5880/   352 kb/s] [eta 00m:20s]
fio: pid=8488, got signal=6
Threads: 2: [_mm] [58.8% done] [  6964/   300 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8489, got signal=6
Threads: 1: [__m] [60.8% done] [  5864/   536 kb/s] [eta 00m:20s]
Threads: 1: [__m] [66.7% done] [  3548/  4392 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8490, got signal=6

fio: (groupid=0): err= 0: pid=8488
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=0.8%, 4=16.4%, 8=82.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.3%, 10=0.2%, 20=2.4%, 50=17.7%, 100=9.1%
     lat (msec): 250=63.7%, 500=6.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8489
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.5%, 4=14.5%, 8=84.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=0.1%, 20=1.2%, 50=23.2%, 100=3.1%
     lat (msec): 250=64.5%, 500=6.1%, 750=0.4%, 1000=0.4%, >=2000=0.2%
fio: (groupid=0): err= 0: pid=8490
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.2%, 4=17.0%, 8=81.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.4%, 10=1.0%, 20=3.6%, 50=18.3%, 100=4.2%
     lat (msec): 250=60.4%, 500=10.0%, 750=0.8%, 1000=0.7%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3054/2522, merge=432/297, ticks=63960/54556, in_queue=118516, util=98.85%
0.08user 0.23system 0:33.53elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2527minor)pagefaults 0swaps