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] [8.6% done] [  7868/  4184 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [11.4% done] [  9712/  3008 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [14.3% done] [  9624/  3540 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [16.7% done] [  7940/  3608 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [19.4% done] [  5388/  7944 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [22.2% done] [  5396/  6156 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [24.3% done] [  5060/  7076 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.0% done] [  4204/  7404 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [29.7% done] [  6240/  3724 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [30.8% done] [  8296/  1476 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  5520/  2924 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  4936/  4700 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  7112/  3120 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  5812/  5092 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.5% done] [  5536/  3104 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  2912/  6200 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  5012/  3012 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  6476/   668 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  5832/  1800 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  3376/  4260 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  5208/  1404 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  2568/  4364 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.6% done] [  3456/  3704 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.5% done] [  6064/  1104 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.4% done] [  5872/   448 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [58.3% done] [  2540/  4640 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [59.2% done] [  2972/  4888 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10285, got signal=6
Threads: 2: [_mm] [58.8% done] [  4952/  2008 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10286, got signal=6
Threads: 1: [__m] [60.8% done] [  3228/  4524 kb/s] [eta 00m:20s]
Threads: 1: [__m] [66.7% done] [  7744/     0 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10287, got signal=6

fio: (groupid=0): err= 0: pid=10285
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.5%, 4=14.8%, 8=84.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=0.4%, 20=3.2%, 50=16.8%, 100=7.8%
     lat (msec): 250=63.5%, 500=7.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10286
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.5%, 4=16.7%, 8=80.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.2%, 10=1.3%, 20=4.9%, 50=15.3%, 100=4.5%
     lat (msec): 250=64.8%, 500=7.2%, 750=0.8%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10287
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=11.5%, 8=88.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.9%, 50=21.3%, 100=2.4%
     lat (msec): 250=65.1%, 500=6.9%, 750=1.5%, 1000=0.4%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3340/2181, merge=473/606, ticks=74824/39200, in_queue=114024, util=99.34%
0.12user 0.33system 0:33.42elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2515minor)pagefaults 0swaps