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] [  8944/  4276 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [10.3% done] [  6292/  5372 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [12.5% done] [  7656/  3876 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [15.4% done] [  9144/  4680 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [17.5% done] [  9172/  1092 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [20.0% done] [  8536/  2980 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [23.1% done] [  8412/  2436 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [25.0% done] [  5729/  4480 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [27.5% done] [  9632/  1716 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [29.3% done] [  5308/  4836 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [31.7% done] [  5428/  4076 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [34.1% done] [  4708/  4960 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [34.9% done] [  5552/  3868 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [37.2% done] [  7008/  1458 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [39.5% done] [  6892/  2148 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [40.9% done] [  4384/  4112 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [43.2% done] [  4164/  4472 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [44.4% done] [  5456/  1232 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [46.7% done] [  4976/  2678 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [48.9% done] [  4152/  3012 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [50.0% done] [  4560/  3468 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [52.2% done] [  4960/  2388 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [53.2% done] [  6020/  1060 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [54.2% done] [  4664/  2956 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [55.1% done] [  5268/  1400 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [56.0% done] [   612/  7744 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11661, got signal=6
Threads: 2: [_mm] [56.9% done] [  4776/  1352 kb/s] [eta 00m:22s]
Threads: 2: [_mm] [60.0% done] [  5988/   716 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [60.8% done] [  3628/  4364 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11662, got signal=6
Threads: 1: [__m] [62.7% done] [  3504/  3616 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [__m] [66.7% done] [  6814/     0 kb/s] [eta 00m:17s]
fio: pid=11663, got signal=6

fio: (groupid=0): err= 0: pid=11661
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=2.1%, 4=17.9%, 8=79.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.0%, 10=1.8%, 20=3.7%, 50=18.0%, 100=10.7%
     lat (msec): 250=58.4%, 500=6.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11662
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.4%, 4=17.1%, 8=80.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.1%, 4=0.0%, 10=2.1%, 20=4.0%, 50=15.0%, 100=7.7%
     lat (msec): 250=57.9%, 500=10.9%, 750=0.8%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11663
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=15.1%, 8=84.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=1.2%, 50=22.0%, 100=7.7%
     lat (msec): 250=55.3%, 500=12.3%, 750=0.5%, 1000=0.5%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3572/2009, merge=507/337, ticks=80556/34720, in_queue=115260, util=98.55%
0.12user 0.22system 0:34.51elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2515minor)pagefaults 0swaps