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] [7.3% done] [  7168/  9464 kb/s] [eta 00m:38s]
Threads: 3: [mmm] [12.1% done] [ 15060/  2634 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [14.7% done] [ 11271/  4840 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [18.2% done] [  5935/  9558 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [19.4% done] [  5108/  6419 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [22.2% done] [  5180/  8984 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [24.3% done] [  6120/  7073 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.0% done] [ 10310/  2347 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [29.7% done] [  9672/  2477 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [32.4% done] [  7912/  4088 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.1% done] [  4273/  7282 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [37.8% done] [  6904/  4009 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [39.5% done] [  5643/  5234 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [41.0% done] [  5439/  3903 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.5% done] [  2902/  7538 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.0% done] [  3237/  5844 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.5% done] [  7053/  1658 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.6% done] [  2378/  6663 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  3142/  5293 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  3595/  3895 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24082, got signal=6
Threads: 2: [m_m] [53.3% done] [  3761/  3993 kb/s] [eta 00m:21s]
Threads: 2: [m_m] [55.6% done] [  4206/  2808 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24083, got signal=6
Threads: 1: [m__] [60.5% done] [  4186/  4434 kb/s] [eta 00m:17s]
Threads: 1: [m__] [65.9% done] [  7179/   291 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24081, got signal=6

fio: (groupid=0): err= 0: pid=24081
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.0%, 2=4.5%, 4=36.6%, 8=57.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.6%, 4=0.0%, 10=3.4%, 20=4.8%, 50=31.7%, 100=11.5%
     lat (msec): 250=33.1%, 500=12.1%, 750=1.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24082
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=3.9%, 4=38.6%, 8=56.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.2%, 4=0.1%, 10=0.1%, 20=3.6%, 50=16.3%, 100=26.2%
     lat (msec): 250=48.7%, 500=3.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24083
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.0%, 4=35.0%, 8=61.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.3%, 4=0.1%, 10=1.0%, 20=4.3%, 50=13.1%, 100=22.0%
     lat (msec): 250=52.2%, 500=5.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3108/2739, merge=447/279, ticks=62036/66948, in_queue=128988, util=98.92%
0.24user 0.48system 0:27.87elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2509minor)pagefaults 0swaps