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] [10.0% done] [ 15616/  1137 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [13.8% done] [  7700/  9512 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [16.7% done] [  5396/ 10435 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [18.8% done] [ 13238/  1024 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [24.1% done] [  7375/  8387 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [25.8% done] [  5100/  7707 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [28.1% done] [ 12275/  2137 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [31.2% done] [  7009/  5225 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [33.3% done] [  6485/  6217 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [36.4% done] [ 11146/  1674 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [38.2% done] [  7123/  5237 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [40.0% done] [  6237/  4476 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [41.7% done] [  8846/  1755 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [43.2% done] [  5579/  5928 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [44.7% done] [  6806/  3157 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [46.2% done] [  7333/  2192 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  3090/  6103 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [51.3% done] [  3807/  4757 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [51.2% done] [  2852/  6387 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2522, got signal=6
Threads: 2: [m_m] [52.4% done] [  4140/  3222 kb/s] [eta 00m:20s]
Threads: 2: [m_m] [53.5% done] [  4051/  4624 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2523, got signal=6
Threads: 1: [m__] [58.5% done] [  2604/  6343 kb/s] [eta 00m:17s]
Threads: 1: [m__] [62.5% done] [  4165/  3795 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [m__] [66.7% done] [  6605/   195 kb/s] [eta 00m:13s]
fio: pid=2521, got signal=6

fio: (groupid=0): err= 0: pid=2521
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.4%, 4=31.7%, 8=65.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.7%, 10=1.5%, 20=4.9%, 50=33.2%, 100=14.9%
     lat (msec): 250=31.6%, 500=8.9%, 750=2.1%, 1000=0.6%, >=2000=0.3%
fio: (groupid=0): err= 0: pid=2522
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=2.1%, 4=30.8%, 8=66.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=1.2%, 10=2.4%, 20=8.0%, 50=19.4%, 100=21.6%
     lat (msec): 250=42.5%, 500=4.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2523
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.2%, 4=25.3%, 8=72.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.3%, 10=1.0%, 20=3.9%, 50=20.6%, 100=19.2%
     lat (msec): 250=48.2%, 500=4.9%, 750=1.4%, 1000=0.1%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3208/2572, merge=561/126, ticks=56188/28668, in_queue=84856, util=97.87%
0.23user 0.44system 0:26.91elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2491minor)pagefaults 0swaps