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] [9.7% done] [ 10934/  5026 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [12.9% done] [ 10020/  5790 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [15.2% done] [ 10703/  5132 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [18.8% done] [ 13592/     0 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [20.6% done] [  8439/  5725 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [22.2% done] [  9744/  3307 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [24.3% done] [  6883/  5067 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.6% done] [  7858/  3571 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [27.5% done] [  7172/  4977 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [29.3% done] [  8821/  2767 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [31.0% done] [  5924/  5993 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [32.6% done] [  2490/  8907 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [34.1% done] [  5493/  6306 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [36.4% done] [  8435/  2494 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [38.6% done] [  7846/  2580 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [40.0% done] [  5668/  3055 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [42.2% done] [  6851/  1678 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [43.5% done] [  5672/  3311 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [45.7% done] [  3620/  5558 kb/s] [eta 00m:25s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25479, got signal=6
Threads: 2: [m_m] [45.8% done] [  2299/  5380 kb/s] [eta 00m:26s]
Threads: 2: [m_m] [46.9% done] [  1942/  6330 kb/s] [eta 00m:26s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25480, got signal=6
Threads: 1: [m__] [52.2% done] [  5733/  3368 kb/s] [eta 00m:22s]
Threads: 1: [m__] [59.5% done] [  4754/  5237 kb/s] [eta 00m:17s]
Threads: 1: [m__] [63.4% done] [  5514/  2145 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25478, got signal=6

fio: (groupid=0): err= 0: pid=25478
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.1%, 4=25.3%, 8=72.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.6%, 10=1.6%, 20=6.4%, 50=35.7%, 100=10.5%
     lat (msec): 250=27.9%, 500=14.9%, 750=1.4%, 1000=0.5%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25479
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.5%, 4=30.3%, 8=67.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.9%, 10=1.2%, 20=4.0%, 50=16.0%, 100=27.9%
     lat (msec): 250=46.2%, 500=3.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25480
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.3%, 4=31.4%, 8=64.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.2%, 4=0.9%, 10=0.9%, 20=6.6%, 50=17.9%, 100=22.1%
     lat (msec): 250=45.5%, 500=3.7%, 750=0.8%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3224/2589, merge=414/305, ticks=55772/45856, in_queue=101624, util=99.25%
0.22user 0.37system 0:27.28elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2497minor)pagefaults 0swaps