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] [  9832/  4264 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [11.1% done] [  8204/  4936 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [13.5% done] [ 10658/  2550 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [16.2% done] [  7824/  4424 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [19.4% done] [  3860/  9580 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [21.6% done] [  3484/  7620 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [23.7% done] [  6340/  3676 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [26.3% done] [  5896/  3208 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.9% done] [  5872/  4832 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.8% done] [  1712/  8988 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  6216/  4484 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.0% done] [  4820/  3676 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.6% done] [  2452/  8292 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [39.0% done] [  1804/  9472 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.5% done] [  6816/  1428 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.9% done] [  3764/  5068 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  3664/  4912 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.6% done] [  4028/  3180 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  5208/  2288 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  3820/  3904 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  5116/  1956 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  4208/  2576 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.6% done] [  3824/  2052 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.5% done] [  3956/  2188 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.2% done] [  5308/  1300 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [57.1% done] [  4344/  1788 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [58.0% done] [  3292/  3544 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [58.8% done] [  5364/  1100 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=7008, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=7006, got signal=6
Threads: 1: [_m_] [59.6% done] [  2972/  3732 kb/s] [eta 00m:21s]
Threads: 1: [_m_] [64.0% done] [  8092/     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=7007, got signal=6

fio: (groupid=0): err= 0: pid=7006
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.5%, 4=13.2%, 8=86.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.8%, 20=2.6%, 50=17.4%, 100=7.1%
     lat (msec): 250=62.8%, 500=8.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7007
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=12.3%, 8=87.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.0%, 20=3.2%, 50=22.7%, 100=2.1%
     lat (msec): 250=59.2%, 500=11.1%, 750=1.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7008
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.0%, 4=13.7%, 8=85.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=1.0%, 20=2.3%, 50=8.8%, 100=11.2%
     lat (msec): 250=68.4%, 500=7.3%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3241/2295, merge=745/370, ticks=71796/44512, in_queue=116308, util=99.20%
0.12user 0.28system 0:33.82elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2513minor)pagefaults 0swaps