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] [8.8% done] [ 14432/  2068 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [12.9% done] [ 12117/  3127 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [15.6% done] [  7199/  8700 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [17.6% done] [  8357/  6400 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.0% done] [ 11705/  2217 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.2% done] [ 12134/   716 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [24.3% done] [  7294/  4974 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [26.3% done] [  5734/  8062 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.9% done] [  7798/  4099 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [31.6% done] [ 12642/     0 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [34.2% done] [  9141/  2682 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.9% done] [  5474/  6041 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [38.5% done] [  6687/  4155 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.0% done] [  7120/  3686 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.6% done] [  3855/  7101 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.2% done] [  5568/  3394 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.5% done] [  6529/  2020 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.8% done] [  3548/  5159 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  4584/  2871 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.1% done] [  2548/  5596 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [53.3% done] [  5714/   543 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14197, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14198, got signal=6
Threads: 1: [m__] [56.8% done] [  5616/  2390 kb/s] [eta 00m:19s]
Threads: 1: [m__] [61.9% done] [  8345/     0 kb/s] [eta 00m:16s]
Threads: 1: [m__] [67.5% done] [  3780/  4135 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14196, got signal=6

fio: (groupid=0): err= 0: pid=14196
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=2.4%, 4=32.1%, 8=64.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.1%, 10=0.3%, 20=7.0%, 50=33.8%, 100=9.8%
     lat (msec): 250=32.2%, 500=14.9%, 750=1.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14197
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.6%, 4=30.7%, 8=66.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.0%, 10=0.5%, 20=3.2%, 50=13.3%, 100=29.6%
     lat (msec): 250=49.9%, 500=2.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14198
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=3.7%, 4=35.6%, 8=59.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.2%, 4=0.0%, 10=0.5%, 20=3.7%, 50=13.2%, 100=23.9%
     lat (msec): 250=53.0%, 500=3.8%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3651/2088, merge=486/284, ticks=62960/64468, in_queue=127424, util=99.07%
0.19user 0.36system 0:27.52elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2482minor)pagefaults 0swaps