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] [9.1% done] [ 11460/  2856 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [12.1% done] [  4884/  8388 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [15.2% done] [  1544/ 13224 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [18.2% done] [  4996/  7976 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [20.0% done] [  9512/   444 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.2% done] [  8004/  3256 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [24.3% done] [  5100/  6340 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [26.3% done] [  8940/  1492 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.2% done] [  5688/  3628 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.0% done] [  7560/  2524 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [33.3% done] [  3840/  7080 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.0% done] [  6644/  2832 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [37.5% done] [  6456/  2192 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [39.0% done] [  3620/  6672 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.5% done] [  2972/  7212 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.9% done] [  4756/  3916 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [45.2% done] [  4248/  4780 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.5% done] [  7708/   240 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  4732/  2624 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [50.0% done] [  3092/  4092 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.1% done] [  4956/  2456 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [53.3% done] [  3988/  2548 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.3% done] [  3488/  3336 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.5% done] [  5560/   820 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [58.7% done] [  4532/  2100 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [59.6% done] [  4568/  2092 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [61.7% done] [  5712/  2360 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [62.5% done] [   128/  7460 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16374, got signal=6
Threads: 2: [m_m] [64.6% done] [  3228/  3028 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16373, got signal=6
Threads: 1: [__m] [65.3% done] [  3884/  3020 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16375, got signal=6

fio: (groupid=0): err= 0: pid=16373
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=2.1%, 4=17.5%, 8=79.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.0%, 10=0.7%, 20=3.2%, 50=14.2%, 100=6.0%
     lat (msec): 250=66.4%, 500=8.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16374
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=2.1%, 4=16.1%, 8=81.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.0%, 10=1.3%, 20=3.1%, 50=12.6%, 100=5.3%
     lat (msec): 250=68.1%, 500=8.1%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16375
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=13.6%, 8=85.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=1.2%, 50=10.5%, 100=7.1%
     lat (msec): 250=69.3%, 500=9.6%, 750=0.5%, 1000=0.6%, >=2000=0.3%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3128/2296, merge=754/454, ticks=77208/42632, in_queue=119832, util=98.99%
0.10user 0.18system 0:33.77elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2517minor)pagefaults 0swaps