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] [7.3% done] [  5424/ 10736 kb/s] [eta 00m:38s]
Threads: 3: [mmm] [9.8% done] [ 10580/  5640 kb/s] [eta 00m:37s]
Threads: 3: [mmm] [13.2% done] [ 12628/  2548 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [16.2% done] [ 13248/  1540 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [18.9% done] [  9676/  4184 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [21.6% done] [  6884/  6968 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [23.7% done] [  7060/  4468 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [27.8% done] [  9032/  5292 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [30.6% done] [  5216/  7884 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [33.3% done] [  3672/  8632 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [35.1% done] [  6681/  4515 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [36.8% done] [  7658/  4709 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [39.5% done] [  2160/  9244 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.1% done] [  8204/  2396 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [44.7% done] [  6976/  2560 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [46.2% done] [  4620/  5192 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.5% done] [  3096/  5728 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.8% done] [   408/  8864 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  5540/  2448 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  1756/  7420 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [52.3% done] [  4024/  2808 kb/s] [eta 00m:21s]
fio: pid=1396, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1397, got signal=6
Threads: 1: [m__] [54.5% done] [  5068/  1380 kb/s] [eta 00m:20s]
Threads: 1: [m__] [59.5% done] [  8448/     0 kb/s] [eta 00m:17s]
Threads: 1: [m__] [65.0% done] [  7328/     0 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1395, got signal=6

fio: (groupid=0): err= 0: pid=1395
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.6%, 4=39.2%, 8=57.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.1%, 10=0.4%, 20=3.8%, 50=39.6%, 100=11.9%
     lat (msec): 250=31.4%, 500=9.2%, 750=2.3%, 1000=0.2%, >=2000=0.2%
fio: (groupid=0): err= 0: pid=1396
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.1%, 4=34.6%, 8=61.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.0%, 10=0.7%, 20=3.2%, 50=19.0%, 100=21.9%
     lat (msec): 250=49.5%, 500=4.5%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1397
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.7%, 4=37.9%, 8=57.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=1.3%, 20=2.8%, 50=14.7%, 100=26.8%
     lat (msec): 250=48.8%, 500=4.1%, 750=0.2%, 1000=0.1%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3143/2734, merge=242/201, ticks=47756/45772, in_queue=93520, util=98.81%
0.26user 0.46system 0:27.54elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2493minor)pagefaults 0swaps