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] [5.0% done] [  7244/  7736 kb/s] [eta 00m:57s]
Threads: 3: [mmm] [6.7% done] [ 11628/  3116 kb/s] [eta 00m:56s]
Threads: 3: [mmm] [8.3% done] [ 13545/   614 kb/s] [eta 00m:55s]
Threads: 3: [mmm] [10.0% done] [  5024/ 10684 kb/s] [eta 00m:54s]
Threads: 3: [mmm] [11.7% done] [  5528/  9756 kb/s] [eta 00m:53s]
Threads: 3: [mmm] [13.3% done] [  3972/  6408 kb/s] [eta 00m:52s]
Threads: 3: [mmm] [15.0% done] [  3384/  8600 kb/s] [eta 00m:51s]
Threads: 3: [mmm] [16.7% done] [  7016/  6492 kb/s] [eta 00m:50s]
Threads: 3: [mmm] [18.3% done] [  4108/ 10520 kb/s] [eta 00m:49s]
Threads: 3: [mmm] [20.0% done] [  6832/  6500 kb/s] [eta 00m:48s]
Threads: 3: [mmm] [21.7% done] [  8580/  4596 kb/s] [eta 00m:47s]
Threads: 3: [mmm] [23.3% done] [ 10276/  1608 kb/s] [eta 00m:46s]
Threads: 3: [mmm] [25.0% done] [  6208/  5408 kb/s] [eta 00m:45s]
Threads: 3: [mmm] [26.7% done] [  6168/  4220 kb/s] [eta 00m:44s]
Threads: 3: [mmm] [28.3% done] [  8548/  1756 kb/s] [eta 00m:43s]
Threads: 3: [mmm] [30.0% done] [  6244/  3456 kb/s] [eta 00m:42s]
Threads: 3: [mmm] [31.7% done] [  6324/  3268 kb/s] [eta 00m:41s]
Threads: 3: [mmm] [33.3% done] [  3660/  7012 kb/s] [eta 00m:40s]
Threads: 3: [mmm] [35.6% done] [  3228/  7448 kb/s] [eta 00m:38s]
Threads: 3: [mmm] [37.9% done] [  6124/  2596 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [39.7% done] [  3156/  5152 kb/s] [eta 00m:35s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25643, got signal=6
fio: pid=25644, got signal=6
Threads: 1: [m__] [42.9% done] [  5892/  2236 kb/s] [eta 00m:32s]
Threads: 1: [m__] [50.0% done] [  8320/  2300 kb/s] [eta 00m:25s]
Threads: 1: [m__] [56.5% done] [  2156/  7848 kb/s] [eta 00m:20s]
Threads: 1: [m__] [61.4% done] [  8328/     0 kb/s] [eta 00m:17s]
Threads: 1: [m__] [66.7% done] [  5968/  2060 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25642, got signal=6

fio: (groupid=0): err= 0: pid=25642
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.1%, 4=41.0%, 8=55.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.1%, 10=2.0%, 20=4.1%, 50=52.1%, 100=13.6%
     lat (msec): 250=17.1%, 500=7.9%, 750=1.1%, 1000=0.5%, >=2000=0.2%
fio: (groupid=0): err= 0: pid=25643
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.0%, 4=33.2%, 8=63.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.1%, 10=0.8%, 20=2.9%, 50=15.5%, 100=28.5%
     lat (msec): 250=47.5%, 500=2.3%, 750=0.6%, 1000=0.4%, >=2000=0.2%
fio: (groupid=0): err= 0: pid=25644
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.3%, 4=33.0%, 8=63.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.0%, 10=1.5%, 20=2.9%, 50=10.5%, 100=28.9%
     lat (msec): 250=49.0%, 500=5.7%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3158/3076, merge=441/5752, ticks=47804/950140, in_queue=906144, util=98.94%
0.26user 0.50system 0:29.47elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2505minor)pagefaults 0swaps