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] [9.4% done] [  7752/  9040 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [12.1% done] [ 13108/  2876 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [15.6% done] [  7484/  8572 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [18.2% done] [ 12408/  2988 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [21.2% done] [  6628/  6340 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [23.5% done] [  7967/  2689 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [25.0% done] [  5320/  7782 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [28.6% done] [  2055/ 11575 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [31.4% done] [  8132/  4174 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [33.3% done] [ 11208/   854 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [35.1% done] [ 11118/     0 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [37.8% done] [  3505/  9282 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [39.5% done] [  9436/   385 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.1% done] [  5541/  5080 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [44.7% done] [  6222/  4241 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [46.2% done] [  4123/  4856 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [46.3% done] [  4292/  4655 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  4426/  3068 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  4560/  3544 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  2654/  5588 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1124, got signal=6
Threads: 2: [m_m] [52.3% done] [  3040/  4639 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1125, got signal=6
Threads: 1: [m__] [54.5% done] [  3875/  3146 kb/s] [eta 00m:20s]
Threads: 1: [m__] [60.5% done] [  3840/  5387 kb/s] [eta 00m:17s]
Threads: 1: [m__] [65.9% done] [  4804/  3099 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1123, got signal=6

fio: (groupid=0): err= 0: pid=1123
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=3.7%, 4=36.5%, 8=59.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.0%, 4=0.2%, 10=0.9%, 20=7.3%, 50=33.6%, 100=7.8%
     lat (msec): 250=32.6%, 500=15.4%, 750=1.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1124
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=3.3%, 4=35.6%, 8=60.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.3%, 4=0.1%, 10=1.4%, 20=7.0%, 50=13.5%, 100=24.7%
     lat (msec): 250=48.9%, 500=2.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1125
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.1%, 4=31.4%, 8=64.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=0.7%, 20=3.7%, 50=11.8%, 100=28.9%
     lat (msec): 250=50.6%, 500=3.0%, 750=0.5%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3296/2526, merge=608/194, ticks=59856/57960, in_queue=117816, util=98.58%
0.27user 0.46system 0:27.80elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2496minor)pagefaults 0swaps