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] [8.8% done] [ 10160/  5796 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [11.1% done] [  7984/  9076 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [13.9% done] [ 10436/  5716 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [15.8% done] [  5156/  9292 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [19.4% done] [  5280/ 10348 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [21.1% done] [  8580/  2944 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [24.3% done] [  5140/  9900 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [26.3% done] [  4352/  8596 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.9% done] [  8884/  3116 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.8% done] [  5804/  5640 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  7192/  5808 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  5752/  6876 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  5805/  4986 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  6213/  4026 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.5% done] [  7098/  2486 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  4498/  5042 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  4380/  4221 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.5% done] [  3640/  4843 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [47.7% done] [  2456/  6146 kb/s] [eta 00m:23s]
fio: pid=19632, got signal=6
Threads: 2: [m_m] [50.0% done] [  2690/  5493 kb/s] [eta 00m:22s]
Threads: 2: [m_m] [53.5% done] [  6952/     0 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19633, got signal=6
Threads: 1: [m__] [55.8% done] [  4754/  3063 kb/s] [eta 00m:19s]
Threads: 1: [m__] [61.0% done] [  8951/     0 kb/s] [eta 00m:16s]
Threads: 1: [m__] [66.7% done] [  3161/  4400 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19631, got signal=6

fio: (groupid=0): err= 0: pid=19631
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.6%, 4=26.8%, 8=70.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.0%, 4=0.1%, 10=1.3%, 20=5.8%, 50=31.1%, 100=15.2%
     lat (msec): 250=31.5%, 500=12.5%, 750=0.9%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19632
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=3.3%, 4=37.0%, 8=59.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.5%, 10=2.1%, 20=6.0%, 50=20.4%, 100=25.2%
     lat (msec): 250=42.5%, 500=2.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19633
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.7%, 4=27.9%, 8=69.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.1%, 10=0.9%, 20=4.5%, 50=13.6%, 100=26.6%
     lat (msec): 250=48.3%, 500=5.1%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3000/2727, merge=681/234, ticks=51816/51776, in_queue=103592, util=98.71%
0.26user 0.44system 0:27.10elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2498minor)pagefaults 0swaps