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] [10.0% done] [  6340/ 10360 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [12.5% done] [  7744/  9584 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [15.2% done] [ 10426/  4500 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [19.4% done] [  5868/  9952 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [20.6% done] [  6860/  4420 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [22.9% done] [  6536/  5664 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [25.7% done] [ 12148/  1780 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [29.4% done] [  6516/  7236 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [32.4% done] [  7372/  4204 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [35.3% done] [  7052/  6516 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [37.1% done] [  5388/  8332 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [38.9% done] [  6738/  5541 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [40.5% done] [  6699/  4395 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [42.1% done] [  3899/  7435 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [43.6% done] [  5565/  4391 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [45.0% done] [  5880/  3422 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.3% done] [  6222/  2300 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  4576/  3245 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  3528/  5348 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [51.2% done] [  3170/  4233 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17871, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17870, got signal=6
Threads: 1: [m__] [53.5% done] [  2500/  5639 kb/s] [eta 00m:20s]
Threads: 1: [m__] [60.0% done] [  4785/  4450 kb/s] [eta 00m:16s]
Threads: 1: [m__] [65.0% done] [  3422/  4765 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17869, got signal=6

fio: (groupid=0): err= 0: pid=17869
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.1%, 2=3.5%, 4=40.0%, 8=55.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.4%, 4=0.1%, 10=0.7%, 20=8.2%, 50=34.6%, 100=9.9%
     lat (msec): 250=29.2%, 500=13.1%, 750=1.3%, 1000=0.6%, >=2000=0.4%
fio: (groupid=0): err= 0: pid=17870
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.2%, 4=33.5%, 8=62.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.4%, 4=0.3%, 10=2.3%, 20=5.2%, 50=14.1%, 100=24.3%
     lat (msec): 250=48.1%, 500=3.8%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17871
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.0%, 4=33.1%, 8=64.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.1%, 10=0.5%, 20=2.4%, 50=11.6%, 100=29.6%
     lat (msec): 250=52.4%, 500=2.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2910/2720, merge=344/271, ticks=48700/75720, in_queue=124420, util=98.93%
0.29user 0.39system 0:26.71elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2493minor)pagefaults 0swaps