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] [ 10084/  6560 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [13.3% done] [  9820/  6724 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [16.1% done] [  9658/  6106 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [18.8% done] [  3546/  9843 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [20.6% done] [ 11672/   840 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [23.5% done] [ 10792/  4532 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [26.5% done] [  2748/ 10316 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [28.6% done] [  4704/  9524 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [30.6% done] [  2904/ 10828 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [33.3% done] [  3860/  8692 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [35.1% done] [  2880/  8872 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [36.8% done] [  4708/  7104 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [39.5% done] [  6920/  4012 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [41.0% done] [  3140/  7928 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.5% done] [  3772/  5392 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.0% done] [  4364/  4488 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.3% done] [  8708/    84 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  6972/   736 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  4116/  4080 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  3740/  4788 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [52.3% done] [  3092/  3924 kb/s] [eta 00m:21s]
fio: pid=15802, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15803, got signal=6
Threads: 1: [m__] [57.1% done] [  2976/  6248 kb/s] [eta 00m:18s]
Threads: 1: [m__] [62.5% done] [  8392/     0 kb/s] [eta 00m:15s]
Threads: 1: [m__] [66.7% done] [  6876/    84 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15801, got signal=6

fio: (groupid=0): err= 0: pid=15801
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.8%, 4=33.7%, 8=64.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.2%, 10=0.9%, 20=6.7%, 50=34.6%, 100=11.1%
     lat (msec): 250=30.6%, 500=13.8%, 750=1.7%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15802
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.2%, 4=37.3%, 8=58.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.2%, 10=1.7%, 20=4.3%, 50=16.0%, 100=26.2%
     lat (msec): 250=44.8%, 500=5.7%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15803
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=2.1%, 4=36.6%, 8=61.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=1.5%, 20=4.3%, 50=13.3%, 100=27.9%
     lat (msec): 250=47.7%, 500=4.3%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2886/2848, merge=423/243, ticks=47628/54948, in_queue=102576, util=98.48%
0.31user 0.42system 0:27.24elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2495minor)pagefaults 0swaps