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] [  8072/  7984 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [12.1% done] [  7736/  8400 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [14.7% done] [  8452/  8608 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [17.6% done] [ 11520/  3460 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.0% done] [  6832/  4988 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.2% done] [  7564/  7192 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.0% done] [  8232/  4192 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.8% done] [  8912/  4384 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [29.7% done] [  5936/  7192 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [32.4% done] [  3216/  9100 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [36.1% done] [  4436/  8320 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [38.9% done] [  9836/  1764 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [40.5% done] [  4952/  6668 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [42.1% done] [  7956/  2364 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [43.6% done] [  6080/  3984 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [45.0% done] [  6734/  2558 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.3% done] [  3864/  5744 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  3476/  5240 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  3332/  5116 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] [52.4% done] [  3820/  3796 kb/s] [eta 00m:20s]
fio: pid=489, got signal=6
Threads: 2: [m_m] [54.8% done] [  7820/     0 kb/s] [eta 00m:19s]
Threads: 2: [m_m] [58.5% done] [  4360/  4680 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [m_m] [62.5% done] [  3804/  3384 kb/s] [eta 00m:15s]
fio: pid=490, got signal=6
Threads: 1: [m__] [66.7% done] [  5276/  2648 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=488, got signal=6

fio: (groupid=0): err= 0: pid=488
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.6%, 4=28.5%, 8=68.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.4%, 10=1.7%, 20=6.3%, 50=24.0%, 100=16.2%
     lat (msec): 250=35.7%, 500=14.0%, 750=1.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=489
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.9%, 4=33.9%, 8=62.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.3%, 10=1.3%, 20=3.0%, 50=17.2%, 100=30.4%
     lat (msec): 250=42.9%, 500=4.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=490
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.7%, 4=29.3%, 8=68.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=1.0%, 20=2.0%, 50=13.2%, 100=27.0%
     lat (msec): 250=48.1%, 500=7.4%, 750=0.6%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3123/2513, merge=518/253, ticks=58988/36928, in_queue=95908, util=98.93%
0.24user 0.56system 0:27.02elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2491minor)pagefaults 0swaps