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] [8.8% done] [ 11732/  3883 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [11.4% done] [ 15725/     0 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [13.9% done] [ 12342/  3428 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [17.6% done] [  8507/  5868 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.0% done] [  8704/  3532 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [21.6% done] [  5935/  6577 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [25.0% done] [ 13638/   783 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.8% done] [ 10236/  2776 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [30.6% done] [ 12114/     0 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [33.3% done] [ 13910/     0 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [36.1% done] [  7408/  4324 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [37.8% done] [  4478/  7357 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [39.5% done] [  2071/  9263 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.2% done] [  2465/  8774 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [44.7% done] [  3804/  6474 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.4% done] [  4651/  5368 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [48.7% done] [  4537/  4474 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  4044/  5151 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [52.5% done] [  4682/  4119 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [53.5% done] [  5297/  1795 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13565, got signal=6
Threads: 2: [m_m] [54.5% done] [  5978/   106 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13566, got signal=6
Threads: 1: [m__] [58.1% done] [  2583/  4938 kb/s] [eta 00m:18s]
Threads: 1: [m__] [63.4% done] [     0/  9298 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13564, got signal=6

fio: (groupid=0): err= 0: pid=13564
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.1%, 2=5.5%, 4=42.3%, 8=51.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=2.0%, 4=0.1%, 10=0.4%, 20=8.3%, 50=27.4%, 100=12.3%
     lat (msec): 250=35.1%, 500=12.7%, 750=1.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13565
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.6%, 4=38.8%, 8=56.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.0%, 10=0.4%, 20=3.5%, 50=18.5%, 100=23.0%
     lat (msec): 250=50.9%, 500=3.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13566
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.7%, 4=34.0%, 8=62.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=0.2%, 20=3.0%, 50=11.9%, 100=26.8%
     lat (msec): 250=51.1%, 500=5.8%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3163/2530, merge=564/231, ticks=57284/40964, in_queue=98248, util=98.11%
0.18user 0.39system 0:27.38elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2483minor)pagefaults 0swaps