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] [6.0% done] [ 10292/  5729 kb/s] [eta 00m:47s]
Threads: 3: [mmm] [9.5% done] [  4079/ 12674 kb/s] [eta 00m:38s]
Threads: 3: [mmm] [12.2% done] [  6133/ 11092 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [14.6% done] [  6619/  9236 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [17.1% done] [  6968/  6278 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [19.0% done] [  6460/  4774 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [23.7% done] [  8285/  7237 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [27.0% done] [ 10000/  2466 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.6% done] [  5814/  8301 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [31.6% done] [  4250/  8297 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  8057/  3015 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  9504/  3002 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  9935/  1089 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [39.0% done] [  3206/  8573 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.5% done] [  2247/  7399 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.9% done] [  7879/   130 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [44.2% done] [  5194/  3193 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [46.5% done] [  7732/     0 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [48.8% done] [  4693/  4555 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  3401/  4161 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17368, got signal=6
Threads: 2: [m_m] [52.3% done] [  6708/    28 kb/s] [eta 00m:21s]
Threads: 2: [m_m] [54.5% done] [  3360/  3401 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17369, got signal=6
Threads: 1: [m__] [58.1% done] [  2848/  5408 kb/s] [eta 00m:18s]
Threads: 1: [m__] [63.4% done] [  7537/     0 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17367, got signal=6

fio: (groupid=0): err= 0: pid=17367
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.0%, 4=33.4%, 8=64.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.8%, 10=0.8%, 20=6.9%, 50=31.1%, 100=14.6%
     lat (msec): 250=30.2%, 500=12.4%, 750=2.1%, 1000=0.5%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17368
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=2.1%, 4=26.0%, 8=71.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=1.0%, 20=3.3%, 50=15.0%, 100=31.6%
     lat (msec): 250=45.0%, 500=3.4%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17369
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.5%, 4=22.4%, 8=75.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.9%, 10=0.5%, 20=2.9%, 50=10.1%, 100=27.5%
     lat (msec): 250=53.8%, 500=3.5%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3272/2424, merge=544/333, ticks=53564/58296, in_queue=111860, util=98.86%
0.24user 0.45system 0:27.50elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2496minor)pagefaults 0swaps