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] [9.4% done] [ 12904/  4804 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [11.8% done] [  6080/ 11916 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [15.2% done] [  9356/  7160 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [17.6% done] [  9104/  3604 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.0% done] [ 10240/  3508 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.2% done] [  8048/  6252 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [24.3% done] [  9940/  3792 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.0% done] [ 11640/     0 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [29.7% done] [  8620/  3276 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [31.6% done] [  5380/  7432 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  9920/  2428 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  4692/  6868 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  6744/  3220 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  7907/  3635 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.5% done] [  5024/  3868 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  4760/  3976 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  4912/  3844 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.5% done] [  1172/  7808 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  3568/  4432 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13166, got signal=6
Threads: 2: [mm_] [48.9% done] [  5720/  1792 kb/s] [eta 00m:23s]
Threads: 2: [mm_] [53.5% done] [  4464/  3996 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13165, got signal=6
Threads: 1: [m__] [54.5% done] [  6170/     0 kb/s] [eta 00m:20s]
Threads: 1: [m__] [61.0% done] [  3488/  7812 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [m__] [66.7% done] [     0/  8808 kb/s] [eta 00m:13s]
fio: pid=13164, got signal=6

fio: (groupid=0): err= 0: pid=13164
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.1%, 2=5.0%, 4=39.2%, 8=54.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.5%, 4=0.4%, 10=3.6%, 20=8.8%, 50=27.7%, 100=10.8%
     lat (msec): 250=30.6%, 500=14.0%, 750=1.8%, 1000=0.3%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13165
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.4%, 4=27.4%, 8=71.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.2%, 10=0.3%, 20=2.3%, 50=13.4%, 100=22.8%
     lat (msec): 250=56.2%, 500=4.4%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13166
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=3.9%, 4=36.7%, 8=58.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.0%, 10=1.6%, 20=4.6%, 50=17.3%, 100=28.8%
     lat (msec): 250=43.3%, 500=3.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3160/2546, merge=397/224, ticks=56852/215100, in_queue=271952, util=98.96%
0.25user 0.52system 0:27.07elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2489minor)pagefaults 0swaps