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] [6.5% done] [ 10032/  6072 kb/s] [eta 00m:43s]
Threads: 3: [mmm] [9.8% done] [ 10600/  6924 kb/s] [eta 00m:37s]
Threads: 3: [mmm] [12.2% done] [ 11772/  2308 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [14.6% done] [ 10624/  5704 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [17.9% done] [  3760/  9940 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [19.5% done] [  7676/  5092 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [22.5% done] [  6912/  4796 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [25.0% done] [  8168/  5324 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [28.2% done] [  6436/  6716 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.0% done] [  8212/  3188 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [32.5% done] [ 10924/  1160 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [34.1% done] [  6240/  4976 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [36.6% done] [  4812/  7068 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [39.0% done] [  8320/  2464 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.5% done] [  6820/  2640 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.9% done] [  4988/  4684 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  5552/  2276 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.5% done] [  3826/  4203 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [47.7% done] [  5549/  2725 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [48.9% done] [  4099/  3576 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30914, got signal=6
Threads: 2: [m_m] [50.0% done] [  4934/  3020 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30915, got signal=6
Threads: 1: [m__] [54.5% done] [  2489/  5474 kb/s] [eta 00m:20s]
Threads: 1: [m__] [59.5% done] [  7648/  1291 kb/s] [eta 00m:17s]
Threads: 1: [m__] [65.0% done] [  8329/     0 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30913, got signal=6

fio: (groupid=0): err= 0: pid=30913
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=2.2%, 4=39.2%, 8=58.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.0%, 10=0.4%, 20=7.5%, 50=34.6%, 100=11.4%
     lat (msec): 250=29.0%, 500=13.4%, 750=2.3%, 1000=0.5%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30914
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=1.4%, 4=27.2%, 8=71.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.6%, 20=2.0%, 50=16.1%, 100=26.9%
     lat (msec): 250=50.4%, 500=3.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30915
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.6%, 4=28.6%, 8=68.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.0%, 10=1.6%, 20=3.4%, 50=12.1%, 100=26.9%
     lat (msec): 250=51.3%, 500=3.2%, 750=0.5%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3420/2324, merge=483/323, ticks=55620/58948, in_queue=114568, util=99.13%
0.25user 0.42system 0:27.55elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2490minor)pagefaults 0swaps