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] [ 12929/     0 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [11.8% done] [  8188/  4541 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [14.7% done] [  9984/  2244 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [17.1% done] [  7506/  4336 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [18.9% done] [  5821/  4328 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [21.6% done] [  6336/  5423 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [24.3% done] [  8128/  4611 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.0% done] [ 10153/   252 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [28.9% done] [  9298/     0 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.8% done] [  6860/  3773 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  4706/  4773 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.0% done] [  3875/  6262 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [37.5% done] [  5269/  4714 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  5214/  4560 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.5% done] [  5340/  4001 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.9% done] [  8199/   133 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  5139/  2780 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.7% done] [  5234/  1536 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [48.9% done] [  3276/  5171 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [51.1% done] [  5403/  1973 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [52.2% done] [  5817/  1343 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [54.3% done] [  4308/  1902 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.3% done] [  2067/  4308 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.2% done] [  4430/  2756 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.0% done] [  4789/  1173 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [56.9% done] [  1811/  5183 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6763, got signal=6
Threads: 2: [_mm] [57.7% done] [  6250/   614 kb/s] [eta 00m:22s]
Threads: 2: [_mm] [58.5% done] [  4277/  3922 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6764, got signal=6
Threads: 1: [__m] [60.4% done] [  6405/   214 kb/s] [eta 00m:21s]
Threads: 1: [__m] [64.7% done] [  6944/     0 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6765, got signal=6

fio: (groupid=0): err= 0: pid=6763
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.1%, 4=18.3%, 8=79.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.9%, 20=5.8%, 50=15.6%, 100=9.1%
     lat (msec): 250=61.8%, 500=6.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6764
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.0%, 4=16.6%, 8=82.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.7%, 20=4.0%, 50=19.0%, 100=4.2%
     lat (msec): 250=63.0%, 500=8.1%, 750=0.3%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6765
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=18.6%, 8=80.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.1%, 20=2.4%, 50=23.7%, 100=5.4%
     lat (msec): 250=57.9%, 500=8.6%, 750=1.0%, 1000=0.3%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3762/1854, merge=641/326, ticks=81252/31864, in_queue=113116, util=99.03%
0.13user 0.25system 0:34.37elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2508minor)pagefaults 0swaps