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] [ 13044/  2356 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [10.8% done] [  9844/  6556 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [11.6% done] [  9076/  5924 kb/s] [eta 00m:38s]
Threads: 3: [mmm] [14.6% done] [  8776/  4432 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [17.1% done] [ 11432/  1912 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [19.5% done] [ 11366/  2447 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [20.9% done] [  6750/  5021 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [23.8% done] [ 10413/  2567 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [26.8% done] [  6017/  6809 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [29.3% done] [  1441/ 10909 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [31.7% done] [  2351/  9818 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [32.6% done] [  5033/  6762 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [35.7% done] [  6959/  4836 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [37.2% done] [  7206/  2948 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [40.5% done] [  4060/  5919 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [42.9% done] [  4891/  4663 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [45.2% done] [  6671/  2544 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [48.8% done] [  3591/  4785 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  5509/  2693 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  1949/  6167 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.2% done] [  4257/  1925 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4841, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4842, got signal=6
Threads: 1: [m__] [54.3% done] [  5025/  2532 kb/s] [eta 00m:21s]
Threads: 1: [m__] [60.5% done] [  8026/     0 kb/s] [eta 00m:17s]
Threads: 1: [m__] [65.9% done] [  8034/     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=4840, got signal=6

fio: (groupid=0): err= 0: pid=4840
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=1.8%, 4=42.5%, 8=55.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.1%, 10=0.3%, 20=5.2%, 50=37.8%, 100=10.1%
     lat (msec): 250=29.4%, 500=14.6%, 750=1.1%, 1000=0.2%, >=2000=0.3%
fio: (groupid=0): err= 0: pid=4841
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.8%, 4=40.0%, 8=55.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.0%, 10=0.3%, 20=3.1%, 50=15.1%, 100=27.6%
     lat (msec): 250=48.6%, 500=4.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4842
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.4%, 4=35.8%, 8=60.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.2%, 10=0.3%, 20=4.8%, 50=11.7%, 100=29.7%
     lat (msec): 250=47.9%, 500=3.7%, 750=0.6%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3443/2419, merge=403/295, ticks=64560/51136, in_queue=115688, util=98.92%
0.25user 0.36system 0:27.77elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2492minor)pagefaults 0swaps