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] [8.3% done] [  5822/  8508 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [11.4% done] [  6722/  6176 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [14.3% done] [  7720/  6546 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [16.7% done] [  8224/  4242 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [19.4% done] [ 10764/  1194 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [21.6% done] [  5855/  4376 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [24.3% done] [  3673/  8821 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [26.3% done] [  4648/  4408 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.2% done] [  6302/  3665 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.0% done] [  3868/  6209 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [32.5% done] [  8540/  1311 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [35.0% done] [  6700/  3047 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [37.5% done] [  9804/   392 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [39.0% done] [  4859/  4490 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.5% done] [  6042/  2048 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.9% done] [  4807/  4364 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [45.2% done] [  5999/  2631 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.5% done] [  4331/  3295 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  3620/  4343 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [50.0% done] [  4423/  4185 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [52.3% done] [  6054/  1547 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  3376/  4316 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.3% done] [  2024/  5800 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.3% done] [  2356/  5364 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.2% done] [  3653/  3271 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17963, got signal=6
Threads: 2: [_mm] [57.1% done] [  4660/  2160 kb/s] [eta 00m:21s]
Threads: 2: [_mm] [59.2% done] [  6736/     0 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [60.0% done] [  3488/  4116 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [_mm] [60.8% done] [  5908/   192 kb/s] [eta 00m:20s]
fio: pid=17964, got signal=6
Threads: 1: [__m] [65.3% done] [  3940/  3588 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17965, got signal=6

fio: (groupid=0): err= 0: pid=17963
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.5%, 4=18.6%, 8=78.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.0%, 10=1.0%, 20=2.6%, 50=17.3%, 100=11.1%
     lat (msec): 250=60.1%, 500=6.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17964
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.4%, 4=15.7%, 8=82.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.0%, 10=0.1%, 20=3.3%, 50=18.7%, 100=8.8%
     lat (msec): 250=57.4%, 500=10.1%, 750=0.5%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17965
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=0.9%, 4=14.6%, 8=84.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=0.8%, 20=2.0%, 50=17.7%, 100=8.7%
     lat (msec): 250=62.6%, 500=6.6%, 750=0.7%, 1000=0.4%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3226/2270, merge=599/529, ticks=69572/41244, in_queue=110816, util=99.23%
0.10user 0.27system 0:33.39elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2515minor)pagefaults 0swaps