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] [ 15785/   760 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [10.5% done] [  9731/  7455 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [12.5% done] [ 10216/  2985 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [15.8% done] [  6986/  7223 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [18.4% done] [  8132/  6014 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [21.1% done] [  8605/  5785 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [23.7% done] [ 10090/  2882 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [26.3% done] [  6155/  5328 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.2% done] [  8381/  3150 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.8% done] [  5562/  7442 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  8873/  1953 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  7833/  3899 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  4919/  7573 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  6596/  3814 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.5% done] [  1112/  7868 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.9% done] [  3736/  6196 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [44.2% done] [  6484/  2160 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [46.5% done] [  7420/  1004 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  1685/  7845 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [48.9% done] [  4215/  1714 kb/s] [eta 00m:24s]
fio: pid=14465, got signal=6
Threads: 2: [m_m] [51.1% done] [  6902/   461 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14466, got signal=6
Threads: 1: [m__] [56.8% done] [  2920/  6532 kb/s] [eta 00m:19s]
Threads: 1: [m__] [61.9% done] [  9228/     0 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [m__] [67.5% done] [  6144/  1270 kb/s] [eta 00m:13s]
fio: pid=14464, got signal=6

fio: (groupid=0): err= 0: pid=14464
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.9%, 4=36.2%, 8=61.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.7%, 20=5.2%, 50=37.9%, 100=9.3%
     lat (msec): 250=29.8%, 500=14.2%, 750=2.7%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14465
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.2%, 4=31.3%, 8=65.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=0.5%, 20=2.4%, 50=14.5%, 100=27.3%
     lat (msec): 250=52.9%, 500=1.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14466
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.2%, 4=36.6%, 8=59.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.1%, 10=0.5%, 20=3.7%, 50=14.8%, 100=29.3%
     lat (msec): 250=45.7%, 500=4.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3390/2328, merge=486/234, ticks=54936/119456, in_queue=174392, util=97.04%
0.22user 0.44system 0:27.89elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2485minor)pagefaults 0swaps