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] [8.1% done] [ 10748/  1660 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [10.8% done] [  9920/  3656 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [13.9% done] [  8120/  6012 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [17.1% done] [ 10184/  3166 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [18.9% done] [  8030/  2288 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [22.2% done] [  5320/  7242 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [24.3% done] [  6675/  4367 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [26.3% done] [  6144/  4336 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.9% done] [  8243/  1721 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.8% done] [  6619/  4017 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  9294/   236 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.0% done] [  7802/     0 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [37.5% done] [  4521/  6002 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [39.0% done] [  4541/  4478 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.5% done] [  3402/  5714 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [42.9% done] [  4789/  4706 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [44.2% done] [  5698/  1882 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [46.5% done] [  3690/  4135 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [48.8% done] [  5431/  1910 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  3942/  3796 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [52.3% done] [  4730/  2638 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.2% done] [  3316/  3001 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [55.3% done] [  2268/  4257 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.2% done] [  3532/  3599 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [57.1% done] [  4403/  2146 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [58.0% done] [  5821/  1500 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [57.7% done] [  3930/  3142 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9935, got signal=6
Threads: 2: [_mm] [60.8% done] [  3926/  3186 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [62.7% done] [  6124/  2378 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9936, got signal=6
Threads: 1: [__m] [66.0% done] [  4757/  2296 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9937, got signal=6

fio: (groupid=0): err= 0: pid=9935
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.6%, 4=20.4%, 8=77.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=0.0%, 20=2.8%, 50=20.3%, 100=7.2%
     lat (msec): 250=64.1%, 500=4.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9936
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=1.6%, 4=18.9%, 8=78.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.0%, 10=0.0%, 20=2.6%, 50=21.1%, 100=3.3%
     lat (msec): 250=63.8%, 500=7.0%, 750=1.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9937
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=0.8%, 4=17.2%, 8=81.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.0%, 20=1.7%, 50=16.5%, 100=5.0%
     lat (msec): 250=67.9%, 500=6.6%, 750=1.4%, 1000=0.3%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3578/2012, merge=516/369, ticks=78564/37652, in_queue=116216, util=98.79%
0.08user 0.26system 0:34.16elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2513minor)pagefaults 0swaps