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] [ 13067/  3643 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [13.8% done] [  8806/  7553 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [16.1% done] [ 11815/  3335 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [18.8% done] [  6758/  8432 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [20.0% done] [ 10074/  2118 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.9% done] [  6504/  8105 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [26.5% done] [  9956/  2465 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [28.6% done] [  5487/  7081 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [30.6% done] [  8944/  3426 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [32.4% done] [  7746/  4860 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [34.2% done] [  6025/  5793 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.9% done] [  5970/  5616 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [38.5% done] [ 10566/    15 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.1% done] [  2716/  9000 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [44.7% done] [  7203/  2965 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [46.2% done] [  5529/  4285 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.7% done] [  4166/  4182 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [51.3% done] [  6848/  1658 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [52.5% done] [  5784/  2704 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [53.5% done] [  4513/  2516 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1726, got signal=6
Threads: 2: [m_m] [55.8% done] [  5238/  2181 kb/s] [eta 00m:19s]
Threads: 2: [m_m] [58.1% done] [  4395/  1914 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1727, got signal=6
Threads: 1: [m__] [63.4% done] [  3087/  6144 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1725, got signal=6

fio: (groupid=0): err= 0: pid=1725
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=3.8%, 4=38.2%, 8=57.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.0%, 4=0.0%, 10=1.3%, 20=9.0%, 50=24.9%, 100=16.3%
     lat (msec): 250=34.4%, 500=11.4%, 750=1.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1726
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.6%, 4=31.3%, 8=65.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.4%, 10=0.7%, 20=2.9%, 50=15.7%, 100=25.9%
     lat (msec): 250=49.8%, 500=3.1%, 750=0.5%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1727
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.6%, 4=30.1%, 8=66.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=0.6%, 20=3.4%, 50=9.5%, 100=27.3%
     lat (msec): 250=52.0%, 500=5.5%, 750=0.3%, 1000=0.1%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3310/2383, merge=514/302, ticks=55620/51412, in_queue=107032, util=98.70%
0.25user 0.40system 0:27.34elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2488minor)pagefaults 0swaps