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] [9.1% done] [ 11137/  5277 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [11.8% done] [ 12670/  2563 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [14.7% done] [ 10850/  5537 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [18.2% done] [ 10811/  3997 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [20.0% done] [  9704/  3796 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [21.6% done] [  4694/  8085 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [23.7% done] [  8451/  3954 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [26.3% done] [  8889/  3946 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.9% done] [  9987/  2969 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.0% done] [  4080/  8384 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [31.0% done] [  4400/  8306 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [35.0% done] [  6518/  4875 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.6% done] [  8755/  2296 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [38.1% done] [  5482/  5517 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [42.5% done] [  7057/  2678 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.0% done] [  6474/  3304 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.3% done] [  2268/  6010 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  6226/  2107 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  3784/  4489 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] [51.1% done] [  4718/  2662 kb/s] [eta 00m:22s]
fio: pid=14746, got signal=6
Threads: 2: [m_m] [53.3% done] [  5143/  1709 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14747, got signal=6
Threads: 1: [m__] [58.1% done] [  4194/  4084 kb/s] [eta 00m:18s]
Threads: 1: [m__] [65.0% done] [  7585/  1469 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14745, got signal=6

fio: (groupid=0): err= 0: pid=14745
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=3.5%, 4=43.5%, 8=52.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.0%, 10=0.3%, 20=5.7%, 50=33.9%, 100=13.4%
     lat (msec): 250=28.1%, 500=15.7%, 750=1.6%, 1000=0.4%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14746
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.6%, 4=34.3%, 8=62.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=0.3%, 20=3.0%, 50=17.5%, 100=25.3%
     lat (msec): 250=50.0%, 500=3.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14747
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.9%, 4=33.9%, 8=61.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.1%, 4=0.0%, 10=0.2%, 20=2.6%, 50=11.1%, 100=28.1%
     lat (msec): 250=53.1%, 500=2.5%, 750=0.9%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3441/2143, merge=531/165, ticks=55872/100856, in_queue=156724, util=98.19%
0.23user 0.33system 0:27.40elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2480minor)pagefaults 0swaps