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] [  7156/ 10132 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [13.8% done] [ 12196/  2356 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [16.1% done] [ 12215/  3347 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [18.8% done] [ 10404/  4832 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [20.6% done] [ 10132/  5068 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [22.2% done] [  7140/  3012 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.7% done] [  8744/  5168 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [27.8% done] [  7624/  4736 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [30.6% done] [ 12528/   280 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [33.3% done] [ 10008/  2472 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [34.2% done] [  4736/  7515 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [36.8% done] [  6500/  5392 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [38.5% done] [  6616/  3628 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.0% done] [  6972/  4576 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.5% done] [  4540/  6176 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.2% done] [  3096/  7164 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.7% done] [  8076/     0 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  6332/  3092 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [52.5% done] [  4200/  3848 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [53.7% done] [  4724/  3624 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [54.8% done] [  4932/  2564 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=22190, got signal=6
Threads: 2: [m_m] [57.1% done] [  3532/  4896 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=22191, got signal=6
Threads: 1: [m__] [61.0% done] [  1772/  5628 kb/s] [eta 00m:16s]
Threads: 1: [m__] [66.7% done] [     0/  8836 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=22189, got signal=6

fio: (groupid=0): err= 0: pid=22189
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=4.7%, 4=37.8%, 8=56.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=2.0%, 4=0.2%, 10=4.2%, 20=7.4%, 50=22.6%, 100=15.4%
     lat (msec): 250=34.5%, 500=10.8%, 750=2.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=22190
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.1%, 4=29.7%, 8=67.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.0%, 10=2.3%, 20=2.7%, 50=11.3%, 100=21.0%
     lat (msec): 250=58.0%, 500=3.3%, 750=0.1%, 1000=0.4%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=22191
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.8%, 4=31.8%, 8=65.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.0%, 10=0.5%, 20=2.3%, 50=13.4%, 100=24.9%
     lat (msec): 250=52.8%, 500=4.6%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3118/2535, merge=602/185, ticks=59464/49204, in_queue=108668, util=98.69%
0.20user 0.41system 0:27.12elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2493minor)pagefaults 0swaps