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] [ 12964/  2952 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [13.3% done] [ 10546/  5909 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [16.1% done] [  6096/  9500 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [20.0% done] [ 13572/  1584 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [22.6% done] [  8536/  5028 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [23.5% done] [  6568/  7864 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [25.7% done] [  5712/  7148 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [27.8% done] [ 10292/  2492 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [30.6% done] [  7784/  4796 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [33.3% done] [  9665/  2734 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [35.1% done] [  8728/  3100 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [38.9% done] [  7204/  4132 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [40.5% done] [  4324/  7068 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [42.1% done] [  8304/  1548 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [43.6% done] [  4336/  6164 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [45.0% done] [   484/  9888 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.5% done] [  3940/  4616 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.8% done] [  6508/  1252 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  3780/  5140 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.4% done] [  5780/  2696 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [53.5% done] [  5600/  1268 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13840, got signal=6
Threads: 2: [m_m] [57.1% done] [  2200/  4436 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13841, got signal=6
Threads: 1: [m__] [62.5% done] [  4284/  5124 kb/s] [eta 00m:15s]
Threads: 1: [m__] [66.7% done] [  5580/  1936 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13839, got signal=6

fio: (groupid=0): err= 0: pid=13839
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=2.7%, 4=33.7%, 8=62.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.0%, 10=1.6%, 20=5.2%, 50=29.3%, 100=12.0%
     lat (msec): 250=36.7%, 500=11.7%, 750=1.9%, 1000=0.4%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13840
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.6%, 4=25.5%, 8=72.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.2%, 10=1.5%, 20=2.3%, 50=13.1%, 100=24.0%
     lat (msec): 250=54.5%, 500=3.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13841
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.3%, 4=32.1%, 8=65.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.2%, 10=1.7%, 20=4.3%, 50=14.0%, 100=25.1%
     lat (msec): 250=49.0%, 500=4.9%, 750=0.5%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3252/2471, merge=431/323, ticks=54852/65208, in_queue=120060, util=98.64%
0.20user 0.37system 0:27.23elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2491minor)pagefaults 0swaps