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] [ 10542/  4328 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [13.3% done] [ 10984/  4484 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [16.7% done] [  8324/  8612 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [18.8% done] [  8220/  6852 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [20.6% done] [  5595/  9573 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [22.9% done] [  7570/  3567 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [25.7% done] [  9146/  5038 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [27.0% done] [  5091/  5367 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [28.9% done] [ 11117/  1820 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.8% done] [ 12816/    48 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  9549/  1731 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.8% done] [  6968/  4864 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [39.5% done] [  9949/  1501 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.1% done] [  5892/  5096 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [43.6% done] [  5530/  4591 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [45.0% done] [  2576/  7224 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.5% done] [  3945/  4689 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  4335/  4656 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [51.2% done] [  1174/  7419 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [52.4% done] [  4868/  2807 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [53.5% done] [  3758/  4197 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2958, got signal=6
Threads: 2: [mm_] [54.5% done] [  4286/  1897 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2957, got signal=6
Threads: 1: [m__] [56.8% done] [  1389/  6107 kb/s] [eta 00m:19s]
Threads: 1: [m__] [63.4% done] [     0/ 10166 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2956, got signal=6

fio: (groupid=0): err= 0: pid=2956
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.6%, 4=34.1%, 8=61.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.6%, 4=0.3%, 10=3.2%, 20=5.2%, 50=25.9%, 100=11.1%
     lat (msec): 250=35.5%, 500=14.8%, 750=1.8%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2957
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=4.3%, 4=34.4%, 8=60.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.3%, 4=0.0%, 10=2.4%, 20=3.9%, 50=15.3%, 100=22.0%
     lat (msec): 250=48.1%, 500=6.7%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2958
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.8%, 4=31.5%, 8=65.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.2%, 10=1.6%, 20=2.8%, 50=13.6%, 100=24.8%
     lat (msec): 250=53.0%, 500=2.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3038/2816, merge=524/256, ticks=57676/42216, in_queue=99888, util=99.07%
0.23user 0.34system 0:27.60elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2512minor)pagefaults 0swaps