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] [  9072/  6760 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [11.4% done] [  9917/  7407 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [16.7% done] [  2816/ 12744 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [19.4% done] [  4392/ 11428 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [21.2% done] [  7988/  4644 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [22.9% done] [ 12928/     0 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [25.7% done] [ 13693/   544 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [27.8% done] [  5244/  8032 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [29.7% done] [  5584/  6524 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [31.6% done] [  7824/  3764 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  6896/  5376 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  6952/  4976 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [39.5% done] [  9496/  1292 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [41.0% done] [  4380/  6256 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.6% done] [  4168/  7500 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.2% done] [  6524/  2076 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.7% done] [  5092/  3364 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  2576/  4868 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [52.5% done] [  3276/  6240 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [55.0% done] [  4676/  3660 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [54.8% done] [  4696/  2044 kb/s] [eta 00m:19s]
fio: pid=19721, got signal=6
Threads: 2: [m_m] [57.1% done] [  2044/  4808 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19722, got signal=6
Threads: 1: [m__] [61.0% done] [  6752/  1620 kb/s] [eta 00m:16s]
Threads: 1: [m__] [66.7% done] [  3124/  4736 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19720, got signal=6

fio: (groupid=0): err= 0: pid=19720
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=3.2%, 4=41.1%, 8=55.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.0%, 10=1.4%, 20=5.0%, 50=32.4%, 100=13.9%
     lat (msec): 250=31.8%, 500=13.2%, 750=1.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19721
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.6%, 4=29.1%, 8=67.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.6%, 4=0.2%, 10=0.7%, 20=2.0%, 50=14.6%, 100=21.3%
     lat (msec): 250=56.2%, 500=2.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19722
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=4.9%, 4=36.2%, 8=57.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.0%, 10=1.3%, 20=3.4%, 50=18.4%, 100=20.9%
     lat (msec): 250=50.4%, 500=3.7%, 750=0.6%, 1000=0.1%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3263/2464, merge=526/314, ticks=65600/96008, in_queue=161608, util=98.21%
0.28user 0.43system 0:27.61elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2497minor)pagefaults 0swaps