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] [8.6% done] [  6456/  7408 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [11.4% done] [  9636/  3800 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [14.3% done] [  7532/  5916 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [17.1% done] [  8092/  3592 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [19.4% done] [  1960/  9080 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [21.6% done] [  7476/  3468 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [23.7% done] [  8232/  3448 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [27.0% done] [  4232/  7612 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [28.2% done] [  5848/  3212 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.0% done] [  6100/  3720 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [33.3% done] [  5936/  4348 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.0% done] [  7244/  1784 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [37.5% done] [  7004/  3936 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  3684/  6316 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.5% done] [  7092/   980 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  6932/  1632 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  5976/  2932 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  3832/  3040 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  5184/  1588 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  5964/  2452 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  3240/  3656 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.5% done] [  2288/  4824 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [55.6% done] [  4180/  2512 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.5% done] [  2172/  4248 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.4% done] [  1576/  4148 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [58.3% done] [  5580/  1204 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [58.0% done] [  3428/  3980 kb/s] [eta 00m:21s]
fio: pid=5578, got signal=6
Threads: 2: [_mm] [60.0% done] [  2380/  5528 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [60.8% done] [  3724/  3432 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5579, got signal=6
Threads: 1: [__m] [64.0% done] [  2120/  5412 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5580, got signal=6

fio: (groupid=0): err= 0: pid=5578
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.3%, 4=18.6%, 8=79.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=2.3%, 20=2.5%, 50=13.1%, 100=14.1%
     lat (msec): 250=61.1%, 500=6.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5579
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.2%, 4=17.2%, 8=80.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.0%, 4=0.0%, 10=2.0%, 20=2.9%, 50=16.7%, 100=4.1%
     lat (msec): 250=65.4%, 500=6.8%, 750=0.7%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5580
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.3%, 4=17.5%, 8=80.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.0%, 10=1.5%, 20=3.4%, 50=16.5%, 100=6.1%
     lat (msec): 250=65.2%, 500=4.8%, 750=1.0%, 1000=0.5%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3167/2457, merge=554/382, ticks=74064/38548, in_queue=112612, util=99.29%
0.10user 0.28system 0:33.92elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2524minor)pagefaults 0swaps