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] [ 10496/  6028 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [11.4% done] [  9656/  6668 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [13.5% done] [  5426/ 11140 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [15.0% done] [ 10436/  3196 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [18.4% done] [  9748/  5312 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [20.5% done] [ 10108/  2271 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [23.1% done] [  6552/  5204 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [25.6% done] [  7904/  6976 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [28.2% done] [  5262/  7549 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.0% done] [  3492/  8332 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [31.7% done] [  7552/  3716 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [33.3% done] [  5005/  5826 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [34.9% done] [  6343/  4490 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [36.4% done] [  6012/  3852 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [38.6% done] [  3723/  6222 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [40.9% done] [  3764/  5724 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [43.2% done] [  3088/  6428 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [44.4% done] [  3608/  4144 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [45.7% done] [  4632/  4092 kb/s] [eta 00m:25s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3061, got signal=6
Threads: 2: [m_m] [46.8% done] [  5340/  2016 kb/s] [eta 00m:25s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3062, got signal=6
Threads: 1: [m__] [48.9% done] [  6964/     0 kb/s] [eta 00m:24s]
Threads: 1: [m__] [54.5% done] [  6028/  2668 kb/s] [eta 00m:20s]
Threads: 1: [m__] [61.0% done] [  5720/  2524 kb/s] [eta 00m:16s]
Threads: 1: [m__] [66.7% done] [  2132/  6900 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3060, got signal=6

fio: (groupid=0): err= 0: pid=3060
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.0%, 2=4.8%, 4=38.9%, 8=55.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=2.0%, 4=0.1%, 10=3.2%, 20=5.7%, 50=38.1%, 100=11.2%
     lat (msec): 250=23.6%, 500=14.1%, 750=1.3%, 1000=0.3%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3061
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.7%, 4=37.4%, 8=59.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.0%, 10=0.9%, 20=3.5%, 50=19.6%, 100=27.6%
     lat (msec): 250=44.5%, 500=2.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3062
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.0%, 4=31.8%, 8=64.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=0.7%, 20=2.6%, 50=16.0%, 100=27.9%
     lat (msec): 250=46.9%, 500=4.1%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3021/2857, merge=549/249, ticks=51176/50352, in_queue=101524, util=99.00%
0.22user 0.36system 0:27.33elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2497minor)pagefaults 0swaps