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] [10.7% done] [  6452/  9696 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [13.3% done] [ 10336/  6192 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [17.9% done] [  6572/ 10424 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [21.4% done] [  5020/  9260 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [24.1% done] [  6668/  7104 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [27.6% done] [  7240/  5304 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [30.0% done] [  8172/  5336 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [31.2% done] [  5420/  7436 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [33.3% done] [  6168/  7100 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [35.3% done] [  8132/  4212 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [37.1% done] [  6956/  4908 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [38.9% done] [  6380/  5520 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [41.7% done] [  7156/  3240 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [43.2% done] [  5180/  4844 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [45.9% done] [  6912/  2968 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [47.4% done] [  3776/  4944 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  7216/   712 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [50.0% done] [  3888/  4144 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  6152/  1332 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4533, got signal=6
Threads: 2: [m_m] [51.2% done] [  6256/   440 kb/s] [eta 00m:21s]
Threads: 2: [m_m] [52.3% done] [  3572/  5056 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [m_m] [54.5% done] [  3504/  3912 kb/s] [eta 00m:20s]
fio: pid=4534, got signal=6
Threads: 1: [m__] [61.0% done] [  5644/  3740 kb/s] [eta 00m:16s]
Threads: 1: [m__] [66.7% done] [  2464/  5828 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4532, got signal=6

fio: (groupid=0): err= 0: pid=4532
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=4.2%, 4=39.6%, 8=55.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.1%, 4=0.0%, 10=3.5%, 20=6.2%, 50=31.4%, 100=11.8%
     lat (msec): 250=32.3%, 500=11.4%, 750=1.5%, 1000=0.6%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4533
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.0%, 4=36.5%, 8=61.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=0.5%, 20=3.2%, 50=27.1%, 100=20.1%
     lat (msec): 250=43.9%, 500=3.9%, 750=0.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4534
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=2.7%, 4=35.6%, 8=61.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.1%, 10=2.0%, 20=2.7%, 50=23.3%, 100=20.6%
     lat (msec): 250=45.0%, 500=4.4%, 750=0.3%, 1000=0.7%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3125/2885, merge=535/90, ticks=51344/38112, in_queue=89448, util=98.92%
0.23user 0.22system 0:27.34elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2494minor)pagefaults 0swaps