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] [8.6% done] [ 11068/  6896 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [11.4% done] [ 14036/  3388 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [14.7% done] [ 11276/  3876 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [18.8% done] [ 11760/  3132 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [21.9% done] [  4552/  8724 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [25.0% done] [ 10752/  3160 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [26.5% done] [  3624/  8932 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [27.0% done] [  5492/  8060 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [29.7% done] [ 12271/   344 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [31.6% done] [  9588/  1012 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [34.2% done] [  7864/  4464 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.9% done] [  9372/   596 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [38.5% done] [  8260/  3808 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.0% done] [  5068/  5548 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.5% done] [  3412/  6256 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.9% done] [  6106/  2913 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [44.2% done] [  6220/  1867 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [45.5% done] [  4644/  4212 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [47.7% done] [  3695/  3383 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10252, got signal=6
Threads: 2: [m_m] [51.2% done] [  3723/  5841 kb/s] [eta 00m:21s]
Threads: 2: [m_m] [53.5% done] [  4048/  3400 kb/s] [eta 00m:20s]
Threads: 2: [m_m] [58.5% done] [  2244/  7352 kb/s] [eta 00m:17s]
Threads: 2: [m_m] [61.0% done] [  2956/  3684 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10253, got signal=6
Threads: 1: [m__] [66.7% done] [   676/  8568 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10251, got signal=6

fio: (groupid=0): err= 0: pid=10251
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.0%, 2=4.3%, 4=37.1%, 8=57.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.0%, 10=3.6%, 20=5.0%, 50=25.4%, 100=13.3%
     lat (msec): 250=37.4%, 500=11.4%, 750=1.9%, 1000=0.4%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=10252
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.6%, 4=32.9%, 8=62.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.0%, 10=2.0%, 20=3.0%, 50=14.6%, 100=29.2%
     lat (msec): 250=48.2%, 500=1.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10253
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=2.4%, 4=29.3%, 8=67.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.1%, 10=1.9%, 20=2.7%, 50=14.3%, 100=23.3%
     lat (msec): 250=52.3%, 500=4.3%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3102/2529, merge=570/185, ticks=57464/51612, in_queue=109076, util=98.33%
0.21user 0.35system 0:27.41elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2493minor)pagefaults 0swaps