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] [7.5% done] [  6208/ 12024 kb/s] [eta 00m:37s]
Threads: 3: [mmm] [10.8% done] [ 11896/  4372 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [13.9% done] [ 10864/  5252 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [15.4% done] [  8932/  4552 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [19.4% done] [ 10276/  5888 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [20.5% done] [  7748/  5120 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [23.1% done] [ 11716/     0 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [25.6% done] [  7892/  5000 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [27.5% done] [  5144/  8556 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [29.3% done] [  4696/  7548 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [31.0% done] [  5821/  5201 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [33.3% done] [  6720/  3084 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [35.7% done] [  5340/  6396 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [41.0% done] [  4780/  7576 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.5% done] [  4956/  4724 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  7072/  1520 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  3280/  5780 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  6224/  1352 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  7672/     0 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  4204/  4016 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  5132/  1264 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15458, got signal=6
Threads: 2: [m_m] [55.8% done] [  4460/  3872 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15459, got signal=6
Threads: 1: [m__] [59.5% done] [  4752/  1960 kb/s] [eta 00m:17s]
Threads: 1: [m__] [65.0% done] [  8032/     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=15457, got signal=6

fio: (groupid=0): err= 0: pid=15457
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.3%, 4=38.1%, 8=58.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.0%, 4=0.1%, 10=1.7%, 20=4.1%, 50=35.9%, 100=12.8%
     lat (msec): 250=27.6%, 500=14.2%, 750=2.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15458
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.6%, 4=32.0%, 8=65.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.0%, 10=0.5%, 20=1.6%, 50=14.7%, 100=26.5%
     lat (msec): 250=52.2%, 500=3.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15459
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.3%, 4=27.7%, 8=69.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.0%, 10=1.3%, 20=2.0%, 50=9.9%, 100=27.1%
     lat (msec): 250=55.5%, 500=3.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3556/2183, merge=437/202, ticks=59772/64932, in_queue=124704, util=99.04%
0.22user 0.29system 0:27.49elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2490minor)pagefaults 0swaps