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] [7.1% done] [ 10898/  5538 kb/s] [eta 00m:39s]
Threads: 3: [mmm] [10.5% done] [ 13344/  3913 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [13.9% done] [  1531/ 15128 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [16.2% done] [  5697/  8033 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [18.9% done] [ 10487/  2003 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [21.1% done] [ 10808/  3145 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [23.7% done] [  9244/  2653 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [25.0% done] [  7716/  5124 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [27.5% done] [  6578/  7159 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [30.8% done] [  7509/  4445 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [32.5% done] [  9837/  2401 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [35.0% done] [  7619/  2958 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [38.5% done] [  5534/  6347 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.0% done] [  4803/  6322 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.6% done] [  5920/  3275 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [45.0% done] [  3088/  6424 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.3% done] [  7651/   552 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  7155/   195 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  5774/  3051 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  5079/  3795 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.5% done] [  4827/  3722 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27518, got signal=6
Threads: 2: [m_m] [54.5% done] [  3319/  3539 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27519, got signal=6
Threads: 1: [m__] [56.8% done] [  3474/  3697 kb/s] [eta 00m:19s]
Threads: 1: [m__] [63.4% done] [  1978/  7623 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27517, got signal=6

fio: (groupid=0): err= 0: pid=27517
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=3.5%, 4=34.1%, 8=61.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=1.2%, 10=2.5%, 20=8.7%, 50=23.0%, 100=16.5%
     lat (msec): 250=33.8%, 500=11.0%, 750=1.4%, 1000=0.5%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27518
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.2%, 4=22.1%, 8=76.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.1%, 10=0.4%, 20=2.3%, 50=11.0%, 100=28.1%
     lat (msec): 250=54.2%, 500=2.7%, 750=0.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27519
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.8%, 4=22.6%, 8=76.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.8%, 20=3.7%, 50=12.1%, 100=25.5%
     lat (msec): 250=53.0%, 500=4.0%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3299/2475, merge=484/152, ticks=62260/43340, in_queue=105592, util=99.02%
0.20user 0.42system 0:27.45elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2520minor)pagefaults 0swaps