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] [10.0% done] [ 11308/  4788 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [13.3% done] [  8292/  9464 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [15.2% done] [ 10168/  5320 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [18.2% done] [  7772/  8540 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [21.2% done] [  9824/  2536 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [23.5% done] [  8020/  4360 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [25.0% done] [  9092/  3064 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.8% done] [  9072/  3660 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [29.7% done] [  6836/  6704 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  8584/  3432 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [36.1% done] [  3716/  8496 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [38.9% done] [  6140/  5980 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [41.7% done] [  3636/  7748 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [43.2% done] [  9312/     0 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [45.9% done] [  6278/  3831 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [47.4% done] [  4044/  5576 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  3184/  6288 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [50.0% done] [  3468/  4516 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [51.2% done] [  4624/  2380 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [52.4% done] [  2344/  5672 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15955, got signal=6
Threads: 2: [m_m] [57.5% done] [  1436/  7268 kb/s] [eta 00m:17s]
Threads: 2: [m_m] [60.0% done] [  2060/  5388 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15956, got signal=6
Threads: 1: [m__] [61.0% done] [  2604/  4816 kb/s] [eta 00m:16s]
Threads: 1: [m__] [66.7% done] [   920/  7572 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15954, got signal=6

fio: (groupid=0): err= 0: pid=15954
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.2%, 2=5.0%, 4=38.8%, 8=54.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.1%, 4=0.2%, 10=3.5%, 20=7.0%, 50=24.5%, 100=15.3%
     lat (msec): 250=32.5%, 500=14.0%, 750=1.1%, 1000=0.3%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15955
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.1%, 2=4.7%, 4=33.7%, 8=60.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.4%, 4=0.0%, 10=1.9%, 20=3.1%, 50=15.2%, 100=26.6%
     lat (msec): 250=47.3%, 500=4.0%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15956
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.1%, 4=31.2%, 8=65.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.1%, 10=2.1%, 20=3.9%, 50=13.4%, 100=25.7%
     lat (msec): 250=48.6%, 500=5.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2787/3001, merge=424/304, ticks=54708/60816, in_queue=115524, util=99.21%
0.25user 0.34system 0:27.06elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2490minor)pagefaults 0swaps