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] [  7780/  7940 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [13.8% done] [  9228/  7468 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [16.7% done] [ 11744/  3872 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [20.0% done] [ 11696/  3912 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [23.3% done] [  7532/  5828 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [25.8% done] [  8540/  6092 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [27.3% done] [  6800/  3112 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [29.4% done] [  5520/  7520 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [32.4% done] [  7420/  4752 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [34.3% done] [  5180/  6392 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [38.2% done] [  4992/  6612 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [40.0% done] [  8972/  3676 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [41.7% done] [  7596/  3264 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [44.4% done] [  6368/  4480 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [45.9% done] [  7732/  1580 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [47.4% done] [  2600/  7388 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  6988/  1860 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [52.6% done] [  5148/  3460 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [52.5% done] [  5396/  2352 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [55.0% done] [  5004/  2276 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [59.0% done] [  2344/  6848 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [60.0% done] [  2300/  4584 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13821, got signal=6
Threads: 2: [m_m] [62.5% done] [  4080/  2916 kb/s] [eta 00m:15s]
Threads: 2: [m_m] [65.0% done] [  1356/  5384 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13822, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13820, got signal=6

fio: (groupid=0): err= 0: pid=13820
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.8%, 4=38.7%, 8=58.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=2.5%, 20=4.6%, 50=22.6%, 100=16.3%
     lat (msec): 250=37.9%, 500=13.6%, 750=1.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13821
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.0%, 4=25.6%, 8=71.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.8%, 20=3.0%, 50=12.0%, 100=26.6%
     lat (msec): 250=53.7%, 500=3.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13822
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.1%, 4=29.9%, 8=67.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=1.1%, 20=3.0%, 50=12.6%, 100=28.0%
     lat (msec): 250=48.5%, 500=5.2%, 750=0.5%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3248/2616, merge=484/202, ticks=57700/89976, in_queue=147676, util=99.25%
0.23user 0.45system 0:27.95elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2489minor)pagefaults 0swaps