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] [8.1% done] [  7127/  6450 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [11.1% done] [ 10148/  2240 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [13.9% done] [ 13697/     0 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [17.1% done] [ 12376/  1373 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [20.0% done] [  6638/  4780 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [21.6% done] [  8272/  2172 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [25.0% done] [ 10283/  2239 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.8% done] [  7136/  4244 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [29.7% done] [  1272/  9808 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [32.4% done] [  7297/  2874 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [34.2% done] [  7688/  1652 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.9% done] [  8480/  1168 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [38.5% done] [  6389/  3114 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [40.0% done] [  5048/  4468 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.5% done] [  6042/  3019 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.9% done] [  5088/  3140 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  5437/  4272 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  5687/  2508 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  2389/  6063 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  2439/  4903 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.5% done] [  5348/  1200 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [54.5% done] [  1585/  6012 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [55.6% done] [  2630/  4204 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [55.3% done] [  4604/  1932 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.2% done] [  4520/  2490 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [57.1% done] [  4772/  2516 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5142, got signal=6
Threads: 2: [_mm] [58.0% done] [  2068/  5261 kb/s] [eta 00m:21s]
Threads: 2: [_mm] [58.8% done] [  3900/  2952 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5144, got signal=6
Threads: 1: [_m_] [60.8% done] [  5848/     0 kb/s] [eta 00m:20s]
Threads: 1: [_m_] [66.7% done] [  3684/  4986 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5143, got signal=6

fio: (groupid=0): err= 0: pid=5142
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.6%, 4=18.2%, 8=81.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.3%, 10=0.3%, 20=2.0%, 50=17.4%, 100=10.6%
     lat (msec): 250=62.8%, 500=5.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5143
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.5%, 4=18.5%, 8=79.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=1.1%, 20=3.4%, 50=22.6%, 100=3.3%
     lat (msec): 250=56.1%, 500=10.8%, 750=1.3%, 1000=0.4%, >=2000=0.2%
fio: (groupid=0): err= 0: pid=5144
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=1.7%, 4=17.7%, 8=80.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.1%, 10=1.0%, 20=2.7%, 50=15.8%, 100=7.3%
     lat (msec): 250=60.5%, 500=11.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3343/2110, merge=732/265, ticks=75588/36984, in_queue=112572, util=98.85%
0.11user 0.28system 0:33.39elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2512minor)pagefaults 0swaps