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] [8.3% done] [ 13762/     0 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [11.8% done] [  4228/  9920 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [14.3% done] [  6180/  6652 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [17.1% done] [  8124/  4324 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [20.0% done] [ 10520/  1707 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.2% done] [  5424/  4824 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.0% done] [  9856/  1176 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [26.3% done] [  6680/  3068 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.2% done] [  7491/  3479 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [31.6% done] [  3608/  8376 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [34.2% done] [  6734/  3727 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.9% done] [  6188/  1416 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  4820/  4664 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  7176/  2300 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.5% done] [  7300/  1300 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.9% done] [  5372/  4556 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  4840/  3204 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.5% done] [  6368/  1932 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [48.8% done] [  5032/  2408 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  3052/  6528 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [52.3% done] [  3264/  3668 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  3524/  3788 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.3% done] [  4128/  2936 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.3% done] [  4312/  3260 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.2% done] [  2092/  5880 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [57.1% done] [  4164/  2508 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5158, got signal=6
Threads: 2: [_mm] [59.2% done] [  5344/   648 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [62.5% done] [  2240/  7212 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5159, got signal=6
Threads: 1: [__m] [64.6% done] [   968/  7776 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5160, got signal=6

fio: (groupid=0): err= 0: pid=5158
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.6%, 4=18.0%, 8=81.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.9%, 20=2.6%, 50=15.3%, 100=13.7%
     lat (msec): 250=60.9%, 500=6.0%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5159
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.3%, 4=17.7%, 8=79.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.1%, 10=2.5%, 20=5.8%, 50=12.1%, 100=7.6%
     lat (msec): 250=62.3%, 500=7.9%, 750=0.4%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5160
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.4%, 4=12.5%, 8=85.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.1%, 10=2.0%, 20=2.4%, 50=10.8%, 100=8.1%
     lat (msec): 250=66.5%, 500=8.7%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3007/2370, merge=656/381, ticks=75820/36872, in_queue=112696, util=99.01%
0.11user 0.27system 0:32.73elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2512minor)pagefaults 0swaps