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] [9.7% done] [ 12217/  3899 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [14.3% done] [ 14914/  1717 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [18.5% done] [  3745/ 12654 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [20.7% done] [  8290/  5013 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [23.3% done] [  6793/  8688 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [25.8% done] [ 10019/  3761 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [29.0% done] [  8341/  5470 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [31.2% done] [  5261/  5718 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [32.4% done] [  5291/  9060 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [35.3% done] [  2568/  9964 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [36.1% done] [  3424/ 10228 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [38.9% done] [  6904/  3948 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [40.5% done] [  8828/  1296 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [42.1% done] [  6140/  4135 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [44.7% done] [  5120/  3669 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [45.0% done] [  2641/  6626 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.3% done] [  4816/  3720 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  5064/  2644 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  3848/  3769 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  7368/     0 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13009, got signal=6
Threads: 2: [mm_] [52.3% done] [  3817/  3550 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13008, got signal=6
Threads: 1: [m__] [55.8% done] [  6088/  1456 kb/s] [eta 00m:19s]
Threads: 1: [m__] [61.9% done] [  3848/  4668 kb/s] [eta 00m:16s]
Threads: 1: [m__] [65.9% done] [  7008/   692 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13007, got signal=6

fio: (groupid=0): err= 0: pid=13007
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.6%, 4=36.9%, 8=60.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.2%, 10=1.4%, 20=6.3%, 50=33.2%, 100=9.6%
     lat (msec): 250=34.8%, 500=13.2%, 750=0.2%, 1000=0.1%, >=2000=0.4%
fio: (groupid=0): err= 0: pid=13008
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=2.1%, 4=31.9%, 8=65.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.2%, 10=0.3%, 20=2.7%, 50=14.9%, 100=26.2%
     lat (msec): 250=50.3%, 500=4.6%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13009
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.1%, 4=36.9%, 8=59.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.0%, 10=1.0%, 20=3.0%, 50=15.6%, 100=26.9%
     lat (msec): 250=48.6%, 500=3.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3178/2572, merge=578/293, ticks=53264/44312, in_queue=97576, util=98.96%
0.26user 0.32system 0:27.54elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2492minor)pagefaults 0swaps