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] [9.1% done] [ 13572/  3004 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [12.9% done] [ 12112/  3820 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [16.1% done] [  4904/ 11968 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [18.8% done] [  6732/  6732 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [20.0% done] [ 13296/  1772 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.9% done] [  4876/  7138 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [25.0% done] [  8116/  5780 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [28.6% done] [  7548/  5876 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [31.4% done] [  5404/  7872 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [33.3% done] [  3848/  7036 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [36.1% done] [  7340/  5280 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [37.8% done] [  8976/   684 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [40.5% done] [  7072/  4040 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [43.2% done] [  9908/  1036 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [44.7% done] [  2380/  8172 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [46.2% done] [  6140/  3548 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.7% done] [  4688/  4312 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  7784/     0 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [51.2% done] [  5804/  2500 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [52.4% done] [  5297/  1889 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [53.5% done] [  6732/     0 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3658, got signal=6
Threads: 2: [m_m] [57.1% done] [  6320/  1684 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3659, got signal=6
Threads: 1: [m__] [61.0% done] [  4340/  3972 kb/s] [eta 00m:16s]
Threads: 1: [m__] [66.7% done] [  4684/  3584 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3657, got signal=6

fio: (groupid=0): err= 0: pid=3657
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.4%, 4=36.9%, 8=59.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.1%, 10=1.2%, 20=4.6%, 50=29.1%, 100=16.2%
     lat (msec): 250=32.2%, 500=13.9%, 750=1.4%, 1000=0.4%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3658
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.8%, 4=32.3%, 8=64.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.1%, 10=0.8%, 20=2.2%, 50=17.9%, 100=23.5%
     lat (msec): 250=50.6%, 500=4.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3659
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.0%, 4=23.3%, 8=75.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.1%, 10=0.2%, 20=0.6%, 50=10.1%, 100=27.7%
     lat (msec): 250=55.8%, 500=4.6%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3660/2013, merge=501/338, ticks=63032/36992, in_queue=100016, util=98.74%
0.22user 0.41system 0:27.47elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2485minor)pagefaults 0swaps