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] [  7308/  6656 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [10.8% done] [ 10356/  2312 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [13.5% done] [  9500/  3548 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [16.2% done] [ 13008/     0 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [18.4% done] [ 10672/     0 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [21.1% done] [  5960/  5448 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [23.7% done] [  7352/  3940 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [25.6% done] [  8076/  2700 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [27.5% done] [  8240/  3608 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [29.3% done] [  3772/  5348 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [31.7% done] [  6820/  2836 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [34.1% done] [  4060/  4400 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [36.6% done] [  4260/  6048 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [39.0% done] [  4664/  4988 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.5% done] [  3372/  5164 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.9% done] [  5000/  3856 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [44.2% done] [  3952/  5652 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [46.5% done] [  7727/  1083 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  3560/  3997 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [50.0% done] [  3517/  5297 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [52.3% done] [  4860/  2122 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  5628/  1382 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.6% done] [  2906/  3481 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [55.3% done] [  3485/  3375 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.2% done] [  3973/  3942 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.0% done] [  4891/  2626 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12350, got signal=6
Threads: 2: [m_m] [56.9% done] [  5218/  1685 kb/s] [eta 00m:22s]
Threads: 2: [m_m] [57.7% done] [  5041/  2016 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12349, got signal=6
Threads: 1: [__m] [62.0% done] [  4186/  4017 kb/s] [eta 00m:19s]
Threads: 1: [__m] [67.3% done] [  4674/  2414 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [__V] [66.7% done] [   220/     0 kb/s] [eta 00m:17s]
fio: pid=12351, got signal=6

fio: (groupid=0): err= 0: pid=12349
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.0%, 4=21.9%, 8=75.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.0%, 10=0.3%, 20=5.3%, 50=17.6%, 100=8.9%
     lat (msec): 250=59.8%, 500=6.4%, 750=0.7%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12350
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.2%, 4=19.1%, 8=79.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.0%, 20=4.0%, 50=18.3%, 100=7.4%
     lat (msec): 250=62.3%, 500=7.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12351
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.0%, 4=20.3%, 8=77.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.0%, 10=0.5%, 20=5.2%, 50=20.2%, 100=4.2%
     lat (msec): 250=57.8%, 500=9.6%, 750=0.8%, 1000=0.2%, >=2000=0.4%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3376/2186, merge=676/392, ticks=75876/38528, in_queue=114400, util=95.83%
0.08user 0.42system 0:34.69elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2519minor)pagefaults 0swaps