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] [7.7% done] [  3712/ 14148 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [9.5% done] [  4216/ 12164 kb/s] [eta 00m:38s]
Threads: 3: [mmm] [12.2% done] [  8840/  3660 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [15.8% done] [ 11612/  2604 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [19.4% done] [  6864/  7620 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [22.2% done] [  7466/  6211 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.7% done] [ 11370/  1583 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [28.6% done] [ 13406/     0 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [31.4% done] [  9180/  5135 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [33.3% done] [  7136/  4816 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [36.1% done] [  9133/  2181 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [38.9% done] [  6817/  4706 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [40.5% done] [  4127/  6466 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [43.2% done] [  1902/  9034 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [45.9% done] [  9613/   795 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [48.6% done] [  6403/  2804 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [50.0% done] [  2335/  7286 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [51.3% done] [  4355/  3603 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [53.8% done] [  4588/  3189 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [55.0% done] [  3906/  3552 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [57.5% done] [  3840/  4509 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13955, got signal=6
Threads: 2: [m_m] [58.5% done] [  5966/  1488 kb/s] [eta 00m:17s]
Threads: 2: [m_m] [61.9% done] [  3966/  3450 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13956, got signal=6
Threads: 1: [m__] [67.5% done] [  7416/     0 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13954, got signal=6

fio: (groupid=0): err= 0: pid=13954
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.5%, 4=32.7%, 8=63.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.1%, 10=0.4%, 20=4.6%, 50=24.4%, 100=14.8%
     lat (msec): 250=41.1%, 500=11.8%, 750=1.5%, 1000=0.3%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13955
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.7%, 4=32.4%, 8=64.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.3%, 10=0.8%, 20=4.6%, 50=15.1%, 100=21.9%
     lat (msec): 250=51.7%, 500=5.0%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13956
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.3%, 4=33.0%, 8=65.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.2%, 20=1.4%, 50=11.2%, 100=27.4%
     lat (msec): 250=52.8%, 500=5.6%, 750=0.5%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3292/2332, merge=538/80, ticks=56928/60388, in_queue=117316, util=99.18%
0.21user 0.36system 0:27.50elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2492minor)pagefaults 0swaps