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] [7.9% done] [  7936/  5056 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [10.0% done] [  9508/  2988 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [12.5% done] [  7924/  5072 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [15.8% done] [ 10484/  3040 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [18.4% done] [  8748/  2388 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [20.0% done] [  5052/  5856 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [23.1% done] [  4800/  8764 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [25.6% done] [  4552/  7296 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [28.2% done] [  6492/  3708 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [31.6% done] [  3588/  7736 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  6037/  2118 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  4880/  5224 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  4212/  5772 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [39.0% done] [  8488/   584 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.5% done] [  4348/  4400 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [42.9% done] [  5564/  2956 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [44.2% done] [  4648/  3928 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [46.5% done] [  5544/  2116 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  4676/  2000 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [50.0% done] [  3740/  3800 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.1% done] [  3376/  3052 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [53.3% done] [  3584/  3688 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.3% done] [  4876/  2164 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.3% done] [  2132/  5260 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.1% done] [  3956/  4152 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=7848, got signal=6
Threads: 2: [_mm] [57.1% done] [  3656/  5064 kb/s] [eta 00m:21s]
Threads: 2: [_mm] [58.0% done] [  4284/  2916 kb/s] [eta 00m:21s]
Threads: 2: [_mm] [58.8% done] [  4396/  1480 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=7850, got signal=6
Threads: 1: [_m_] [63.3% done] [  5460/  2568 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [_V_] [66.7% done] [  4900/  2168 kb/s] [eta 00m:16s]
fio: pid=7849, got signal=6

fio: (groupid=0): err= 0: pid=7848
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.1%, 4=21.4%, 8=76.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.0%, 10=1.9%, 20=3.9%, 50=18.8%, 100=10.0%
     lat (msec): 250=60.2%, 500=4.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7849
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.4%, 4=19.1%, 8=79.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.1%, 10=1.4%, 20=3.2%, 50=20.0%, 100=4.9%
     lat (msec): 250=58.9%, 500=9.8%, 750=0.5%, 1000=0.3%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7850
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.7%, 4=16.5%, 8=82.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.9%, 20=1.2%, 50=18.0%, 100=8.2%
     lat (msec): 250=63.8%, 500=7.0%, 750=0.3%, 1000=0.2%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3233/2340, merge=504/465, ticks=70748/41320, in_queue=112068, util=98.55%
0.06user 0.24system 0:33.52elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2520minor)pagefaults 0swaps