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] [  8884/  7372 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [11.8% done] [  3608/ 14792 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [13.5% done] [  7976/  6388 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [16.7% done] [  6040/  9864 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [19.4% done] [ 12860/   776 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [20.5% done] [ 11220/     0 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [23.7% done] [ 11336/  3876 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [26.3% done] [  8124/  3100 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [29.7% done] [  6272/  7924 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [30.8% done] [ 11216/   608 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [32.5% done] [ 11476/     0 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [35.0% done] [  7260/  4028 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.6% done] [  6768/  5460 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [41.0% done] [  7584/  2916 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.5% done] [  5988/  4312 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.9% done] [  3284/  4984 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.2% done] [  3964/  4868 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [46.5% done] [  2028/  8684 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  3176/  4420 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17182, got signal=6
Threads: 2: [m_m] [48.9% done] [  2848/  2976 kb/s] [eta 00m:23s]
Threads: 2: [m_m] [53.5% done] [  4284/  3392 kb/s] [eta 00m:20s]
Threads: 2: [m_m] [55.8% done] [  4284/  2744 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17183, got signal=6
Threads: 1: [m__] [62.5% done] [   564/  9608 kb/s] [eta 00m:15s]
Threads: 1: [m__] [66.7% done] [  6940/   420 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17181, got signal=6

fio: (groupid=0): err= 0: pid=17181
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.2%, 4=34.6%, 8=62.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.9%, 10=2.0%, 20=7.7%, 50=29.2%, 100=16.3%
     lat (msec): 250=28.3%, 500=12.0%, 750=2.0%, 1000=0.3%, >=2000=0.5%
fio: (groupid=0): err= 0: pid=17182
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.5%, 4=30.1%, 8=66.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.2%, 10=0.9%, 20=5.1%, 50=17.3%, 100=25.8%
     lat (msec): 250=47.4%, 500=2.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17183
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.7%, 4=19.7%, 8=78.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.2%, 10=0.5%, 20=2.1%, 50=10.2%, 100=27.3%
     lat (msec): 250=55.5%, 500=3.3%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3306/2440, merge=491/298, ticks=59808/63996, in_queue=123804, util=99.22%
0.25user 0.36system 0:27.12elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2490minor)pagefaults 0swaps