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] [10.3% done] [ 10020/  7100 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [14.8% done] [  5564/ 11072 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [17.9% done] [ 10108/  5468 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [20.0% done] [  7328/  6688 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [23.3% done] [  8224/  5452 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [25.0% done] [  7536/  4992 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [26.5% done] [  9616/  3080 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [27.8% done] [  7868/  3528 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [30.6% done] [  9452/  3144 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [32.4% done] [  7704/  4632 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.1% done] [  6528/  5160 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [37.8% done] [  7764/  4092 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [39.5% done] [  8112/  2084 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.1% done] [  7708/  3184 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [43.6% done] [  7160/  4252 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.2% done] [  4468/  5476 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.7% done] [  1552/  8400 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  4056/  3892 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [52.5% done] [  3900/  5124 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [53.7% done] [  1892/  7212 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16562, got signal=6
Threads: 2: [m_m] [54.8% done] [  5840/  1296 kb/s] [eta 00m:19s]
Threads: 2: [m_m] [55.8% done] [  2344/  5032 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16563, got signal=6
Threads: 1: [m__] [61.0% done] [  7416/   380 kb/s] [eta 00m:16s]
Threads: 1: [m__] [66.7% done] [  6692/  1808 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16561, got signal=6

fio: (groupid=0): err= 0: pid=16561
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.0%, 4=39.7%, 8=56.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=1.3%, 20=3.2%, 50=33.9%, 100=14.2%
     lat (msec): 250=32.8%, 500=10.3%, 750=2.6%, 1000=0.5%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16562
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=3.9%, 4=35.0%, 8=60.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.0%, 10=2.3%, 20=4.4%, 50=16.8%, 100=21.9%
     lat (msec): 250=49.3%, 500=4.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16563
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.4%, 4=29.7%, 8=66.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.2%, 10=1.2%, 20=3.0%, 50=13.3%, 100=24.3%
     lat (msec): 250=52.1%, 500=3.8%, 750=0.9%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3106/2520, merge=548/147, ticks=52692/80504, in_queue=133196, util=98.81%
0.21user 0.37system 0:27.26elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2495minor)pagefaults 0swaps