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] [  5420/  7856 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [11.1% done] [  6440/  7528 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [13.5% done] [ 10136/  2660 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [16.2% done] [  5548/  6348 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [18.4% done] [  5596/  7284 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [21.1% done] [  5868/  5736 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [23.7% done] [  4736/  6108 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [26.3% done] [  7620/  2864 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.2% done] [  8880/  2164 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.8% done] [  8196/  1760 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [32.5% done] [  6064/  3776 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [35.0% done] [  6480/  3296 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.6% done] [  4944/  5576 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [39.0% done] [  4444/  4496 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.5% done] [  7824/   836 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.9% done] [  4728/  5412 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  6868/  1648 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  6676/  1440 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  3912/  3244 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  2584/  4164 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  5036/  1560 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  2196/  4884 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.3% done] [  4064/  1832 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.5% done] [  4688/  1000 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [58.7% done] [  2548/  4076 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [58.3% done] [  1288/  4260 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [59.2% done] [  2972/  4536 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [58.8% done] [  5472/  1172 kb/s] [eta 00m:21s]
fio: pid=15029, got signal=6
Threads: 2: [_mm] [62.0% done] [   684/  7548 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15030, got signal=6
Threads: 1: [__m] [64.0% done] [  6636/   688 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15031, got signal=6

fio: (groupid=0): err= 0: pid=15029
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=0.9%, 4=15.0%, 8=83.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=1.0%, 20=4.4%, 50=15.8%, 100=8.5%
     lat (msec): 250=63.6%, 500=6.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15030
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.0%, 4=15.1%, 8=83.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.2%, 10=1.3%, 20=5.5%, 50=16.4%, 100=3.1%
     lat (msec): 250=63.9%, 500=8.2%, 750=0.4%, 1000=0.4%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=15031
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.9%, 4=15.0%, 8=83.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.1%, 10=1.3%, 20=3.4%, 50=13.6%, 100=4.5%
     lat (msec): 250=63.9%, 500=11.7%, 750=0.5%, 1000=0.2%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3170/2442, merge=498/370, ticks=75696/39652, in_queue=115348, util=99.23%
0.11user 0.22system 0:33.97elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2522minor)pagefaults 0swaps