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] [ 10888/  4892 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [9.8% done] [ 10380/  6372 kb/s] [eta 00m:37s]
Threads: 3: [mmm] [13.2% done] [  8236/  8968 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [15.4% done] [  8028/  6008 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [17.9% done] [ 14552/  1056 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [20.0% done] [ 10268/  1468 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [22.0% done] [  8812/  5044 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [24.4% done] [  8372/  4100 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [26.8% done] [  4972/  8424 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [30.0% done] [ 11712/  1080 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [32.5% done] [  4996/  6412 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [34.1% done] [  8144/  2800 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [37.5% done] [  5364/  6128 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [38.1% done] [  4672/  6516 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [39.5% done] [  4520/  4876 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [40.9% done] [  3472/  5788 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [42.2% done] [  6516/   960 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [43.5% done] [  4720/  4236 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [44.7% done] [  4028/  4048 kb/s] [eta 00m:26s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19437, got signal=6
Threads: 2: [m_m] [48.9% done] [  3576/  4976 kb/s] [eta 00m:23s]
Threads: 2: [m_m] [52.3% done] [  4328/  3728 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19438, got signal=6
Threads: 1: [m__] [57.1% done] [   972/  8468 kb/s] [eta 00m:18s]
Threads: 1: [m__] [64.1% done] [     0/  9268 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19436, got signal=6

fio: (groupid=0): err= 0: pid=19436
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.2%, 2=4.9%, 4=38.2%, 8=55.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=2.3%, 4=0.0%, 10=2.9%, 20=10.4%, 50=29.0%, 100=11.9%
     lat (msec): 250=25.6%, 500=15.9%, 750=1.6%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19437
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=4.0%, 4=37.3%, 8=57.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.0%, 10=1.0%, 20=2.2%, 50=19.8%, 100=27.6%
     lat (msec): 250=43.8%, 500=4.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19438
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.3%, 4=29.4%, 8=67.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.9%, 20=2.0%, 50=12.0%, 100=26.0%
     lat (msec): 250=54.7%, 500=3.5%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2910/2736, merge=402/262, ticks=53340/42692, in_queue=96032, util=98.64%
0.22user 0.48system 0:26.90elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2495minor)pagefaults 0swaps