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] [7.5% done] [  8904/  7692 kb/s] [eta 00m:37s]
Threads: 3: [mmm] [10.8% done] [ 11920/  3720 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [13.9% done] [  8296/  6676 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [17.6% done] [ 11604/  2140 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [19.4% done] [  5468/  8824 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [21.1% done] [  9836/  2276 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [23.7% done] [  2988/ 10372 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [25.6% done] [ 10520/  4552 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [30.6% done] [  2644/  9888 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [32.4% done] [  7568/  5436 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.1% done] [  8056/  3472 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [37.8% done] [  9060/  2680 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [40.5% done] [  6980/  4256 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [41.0% done] [  6472/  2600 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.5% done] [  7440/  2060 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.2% done] [  7056/  2700 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.5% done] [  6308/  2668 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.8% done] [  3032/  5048 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  3232/  4768 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [52.4% done] [     0/  9680 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [53.5% done] [  2592/  4264 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4130, got signal=6
Threads: 2: [m_m] [57.1% done] [  2240/  6388 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [m_m] [59.5% done] [  2116/  4920 kb/s] [eta 00m:17s]
fio: pid=4131, got signal=6
Threads: 1: [m__] [65.0% done] [  3996/  4168 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4129, got signal=6

fio: (groupid=0): err= 0: pid=4129
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=4.2%, 4=42.5%, 8=52.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.2%, 10=2.4%, 20=6.4%, 50=32.0%, 100=13.6%
     lat (msec): 250=30.2%, 500=10.6%, 750=2.7%, 1000=0.7%, >=2000=0.2%
fio: (groupid=0): err= 0: pid=4130
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.4%, 4=30.4%, 8=66.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.0%, 10=1.1%, 20=6.1%, 50=12.5%, 100=22.8%
     lat (msec): 250=54.7%, 500=1.7%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4131
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.7%, 4=32.5%, 8=63.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=0.4%, 20=5.1%, 50=13.0%, 100=26.3%
     lat (msec): 250=49.4%, 500=4.6%, 750=0.6%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3110/2692, merge=443/148, ticks=55268/91104, in_queue=146364, util=99.12%
0.26user 0.51system 0:27.49elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2515minor)pagefaults 0swaps