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] [9.4% done] [ 11589/  5347 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [12.1% done] [  9829/  5948 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [15.2% done] [ 11047/  4535 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [17.1% done] [  6615/  9512 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [18.9% done] [  4506/  9703 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [21.1% done] [  6871/  6448 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [22.5% done] [  5103/  8013 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [26.3% done] [  8350/  4900 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.2% done] [ 12385/     0 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.8% done] [ 10967/     0 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  7519/  6344 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.0% done] [  5087/  5835 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [37.5% done] [ 10162/    44 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  1357/  9825 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.5% done] [  7135/  2779 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.9% done] [  4640/  4347 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.2% done] [  4896/  3953 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [46.5% done] [  2913/  6692 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [48.8% done] [  4384/  3498 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  4530/  1137 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2931, got signal=6
Threads: 2: [m_m] [51.1% done] [  3835/  4286 kb/s] [eta 00m:22s]
Threads: 2: [m_m] [53.3% done] [  4827/  3246 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2932, got signal=6
Threads: 1: [m__] [58.1% done] [  4912/  3730 kb/s] [eta 00m:18s]
Threads: 1: [m__] [63.4% done] [  3657/  4433 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2930, got signal=6

fio: (groupid=0): err= 0: pid=2930
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.7%, 4=31.1%, 8=66.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.5%, 10=1.5%, 20=7.1%, 50=32.1%, 100=11.9%
     lat (msec): 250=30.8%, 500=13.1%, 750=2.3%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2931
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.5%, 4=28.1%, 8=70.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.5%, 10=1.1%, 20=3.0%, 50=17.7%, 100=27.6%
     lat (msec): 250=47.3%, 500=2.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2932
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.0%, 4=27.7%, 8=69.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.5%, 10=0.9%, 20=4.2%, 50=15.8%, 100=25.2%
     lat (msec): 250=48.0%, 500=4.2%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3304/2468, merge=500/342, ticks=57300/141296, in_queue=198596, util=99.14%
0.25user 0.33system 0:27.36elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2498minor)pagefaults 0swaps