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] [ 11841/  5449 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [14.3% done] [  3307/ 13470 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [17.2% done] [  9560/  5864 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [20.7% done] [ 11170/  2685 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [22.6% done] [  6715/  7085 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [25.0% done] [  5030/ 10126 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [26.5% done] [  9224/  4656 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [27.8% done] [   950/ 10617 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [29.7% done] [  5878/  6676 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [32.4% done] [  7931/  3206 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.1% done] [  9297/  3267 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [37.8% done] [  6018/  5908 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [40.5% done] [  5501/  6737 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [43.2% done] [  5859/  5400 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [44.7% done] [  4538/  4071 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [46.2% done] [  8216/   568 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.5% done] [  6087/  2458 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.8% done] [  5144/  2954 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.8% done] [  5412/  1531 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [50.0% done] [  6318/  1202 kb/s] [eta 00m:22s]
fio: pid=31790, got signal=6
Threads: 2: [m_m] [52.3% done] [   503/  7127 kb/s] [eta 00m:21s]
Threads: 2: [m_m] [53.3% done] [  2872/  4482 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31791, got signal=6
Threads: 1: [m__] [59.5% done] [  3718/  6582 kb/s] [eta 00m:17s]
Threads: 1: [m__] [65.0% done] [  1466/  7139 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31789, got signal=6

fio: (groupid=0): err= 0: pid=31789
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.3%, 4=34.2%, 8=62.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.9%, 10=3.1%, 20=9.2%, 50=28.5%, 100=13.5%
     lat (msec): 250=31.1%, 500=9.7%, 750=0.9%, 1000=1.5%, >=2000=0.3%
fio: (groupid=0): err= 0: pid=31790
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=3.0%, 4=29.0%, 8=67.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.3%, 10=0.7%, 20=5.5%, 50=21.6%, 100=23.4%
     lat (msec): 250=44.8%, 500=2.7%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31791
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.0%, 4=30.8%, 8=66.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=1.0%, 10=0.8%, 20=4.4%, 50=17.2%, 100=27.3%
     lat (msec): 250=42.6%, 500=5.3%, 750=0.5%, 1000=0.1%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2828/3126, merge=589/141, ticks=50780/37708, in_queue=88488, util=98.28%
0.20user 0.30system 0:27.42elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2500minor)pagefaults 0swaps