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] [7.9% done] [ 13036/  3938 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [10.5% done] [  8180/  7112 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [13.5% done] [ 12989/  3603 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [16.2% done] [ 13044/  1736 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [18.9% done] [  8373/  6837 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [21.6% done] [  3946/  9357 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [23.1% done] [ 11295/  1102 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [25.6% done] [  9385/  3331 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [28.2% done] [  8211/  4147 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [31.6% done] [  8455/  4344 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  6049/  6912 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.8% done] [  8006/  3264 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [38.5% done] [  7829/  3670 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.0% done] [  4804/  7057 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [44.7% done] [  5505/  4592 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [46.2% done] [  3847/  5852 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.7% done] [  7104/   378 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [51.3% done] [  4596/  5084 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [52.5% done] [  3981/  4430 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [53.7% done] [  3131/  5186 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [54.8% done] [  2768/  4080 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2221, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2222, got signal=6
Threads: 1: [m__] [57.1% done] [  1831/  6037 kb/s] [eta 00m:18s]
Threads: 1: [m__] [64.1% done] [  3158/  6175 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2219, got signal=6

fio: (groupid=0): err= 0: pid=2219
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=4.1%, 4=40.8%, 8=54.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=2.0%, 4=0.2%, 10=0.4%, 20=9.4%, 50=27.1%, 100=14.6%
     lat (msec): 250=30.4%, 500=13.4%, 750=1.9%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2221
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=3.5%, 4=30.6%, 8=65.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.0%, 10=0.4%, 20=3.6%, 50=14.5%, 100=23.4%
     lat (msec): 250=52.9%, 500=4.0%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2222
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.6%, 4=32.0%, 8=64.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.0%, 10=0.6%, 20=3.3%, 50=11.4%, 100=26.2%
     lat (msec): 250=53.3%, 500=3.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3172/2397, merge=515/313, ticks=62112/154792, in_queue=216900, util=99.04%
0.22user 0.33system 0:26.78elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2491minor)pagefaults 0swaps