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] [8.8% done] [  5980/ 11624 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [12.5% done] [ 10244/  6100 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [16.1% done] [  6684/  8644 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [18.8% done] [  4624/ 10440 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [21.2% done] [ 10492/  1652 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [23.5% done] [ 13324/   788 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [25.7% done] [ 10736/  2264 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [27.8% done] [  8756/  3724 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [28.9% done] [  5136/  7632 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.8% done] [  9128/  1512 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [32.5% done] [  9292/  3032 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [35.0% done] [  8304/  4280 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.6% done] [  5248/  4712 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [39.0% done] [  5296/  4776 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.5% done] [  5824/  3520 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.9% done] [  3772/  5272 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [44.2% done] [  7824/  1440 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [45.5% done] [  5484/  2992 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [47.7% done] [  4180/  5500 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [48.9% done] [  3116/  4316 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28816, got signal=6
Threads: 2: [m_m] [51.1% done] [  1856/  6616 kb/s] [eta 00m:22s]
Threads: 2: [m_m] [54.5% done] [  4668/  2780 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28817, got signal=6
Threads: 1: [m__] [59.5% done] [  4124/  5856 kb/s] [eta 00m:17s]
Threads: 1: [m__] [66.7% done] [     0/  9144 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28815, got signal=6

fio: (groupid=0): err= 0: pid=28815
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.2%, 2=5.0%, 4=38.1%, 8=55.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=2.4%, 4=0.2%, 10=2.7%, 20=7.2%, 50=29.1%, 100=10.6%
     lat (msec): 250=31.1%, 500=15.0%, 750=1.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28816
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=3.1%, 4=29.9%, 8=66.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=1.1%, 20=4.0%, 50=14.8%, 100=30.7%
     lat (msec): 250=45.7%, 500=2.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28817
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.1%, 4=32.9%, 8=63.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=3.1%, 20=2.4%, 50=12.8%, 100=23.4%
     lat (msec): 250=53.8%, 500=3.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2974/2875, merge=429/182, ticks=52864/82660, in_queue=135516, util=98.78%
0.22user 0.50system 0:27.35elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2511minor)pagefaults 0swaps