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] [9.4% done] [  8348/  4616 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [12.1% done] [ 10738/  2906 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [14.7% done] [  6600/  6116 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [17.6% done] [  5868/  7720 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.6% done] [  8460/  3524 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [22.9% done] [  5532/  6208 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [25.0% done] [  4580/  7315 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.0% done] [  4544/  5316 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [28.2% done] [  3044/  6012 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.8% done] [  3744/  6076 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  2088/  9520 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  5616/  3540 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [38.5% done] [  6396/  2676 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [40.0% done] [  5884/  4308 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.5% done] [  5320/  3476 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  3792/  4832 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  4532/  4268 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.6% done] [  5676/  1240 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  4192/  3716 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  4252/  2796 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  3524/  4768 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.5% done] [  2196/  4672 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [55.6% done] [  4140/  2924 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.5% done] [  4324/  1756 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.4% done] [  3540/  3436 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [58.3% done] [  6452/   632 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [59.2% done] [  6564/   176 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5158, got signal=6
Threads: 2: [_mm] [60.0% done] [  5244/   464 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [64.6% done] [   748/  7948 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5159, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [__m] [66.7% done] [  1800/  5820 kb/s] [eta 00m:16s]
fio: pid=5160, got signal=6

fio: (groupid=0): err= 0: pid=5158
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.4%, 4=14.4%, 8=85.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.5%, 50=21.5%, 100=9.1%
     lat (msec): 250=59.7%, 500=6.5%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5159
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=2.1%, 4=18.9%, 8=78.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.0%, 10=1.4%, 20=5.5%, 50=13.7%, 100=6.0%
     lat (msec): 250=62.2%, 500=8.8%, 750=1.1%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5160
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=12.1%, 8=87.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.3%, 20=2.3%, 50=10.1%, 100=9.2%
     lat (msec): 250=66.9%, 500=9.5%, 750=1.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2856/2644, merge=555/520, ticks=68404/49088, in_queue=117492, util=99.26%
0.19user 0.30system 0:33.22elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2516minor)pagefaults 0swaps