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] [9.4% done] [  5524/ 11056 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [11.1% done] [  4752/ 10236 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [15.2% done] [ 11492/  4336 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [17.1% done] [  3592/ 13452 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [18.9% done] [  3748/  9232 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [21.1% done] [  7134/  6618 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [22.5% done] [  6180/  6660 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [25.6% done] [  5888/  8288 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [28.2% done] [  5360/  6440 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.8% done] [  6264/  6000 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [32.5% done] [  5796/  5620 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [34.1% done] [  6272/  5660 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [36.6% done] [  6552/  3716 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [38.1% done] [  5556/  4840 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [39.5% done] [  3056/  6556 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [40.9% done] [  4396/  3844 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [43.2% done] [  7620/   956 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [44.4% done] [  3100/  7168 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [46.7% done] [  4116/  3540 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [47.8% done] [  4496/  2940 kb/s] [eta 00m:24s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25868, got signal=6
Threads: 2: [m_m] [50.0% done] [  4588/  1560 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25869, got signal=6
Threads: 1: [m__] [55.8% done] [  4668/  5100 kb/s] [eta 00m:19s]
Threads: 1: [m__] [62.5% done] [  5932/  4140 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [m__] [66.7% done] [     0/  8356 kb/s] [eta 00m:13s]
fio: pid=25867, got signal=6

fio: (groupid=0): err= 0: pid=25867
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.4%, 4=35.6%, 8=60.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.2%, 4=0.2%, 10=2.9%, 20=7.2%, 50=32.4%, 100=8.6%
     lat (msec): 250=32.2%, 500=13.1%, 750=1.8%, 1000=0.3%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25868
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=2.9%, 4=42.3%, 8=54.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.0%, 4=0.2%, 10=1.6%, 20=5.4%, 50=17.4%, 100=29.1%
     lat (msec): 250=40.9%, 500=3.8%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25869
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.5%, 4=35.1%, 8=62.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=0.1%, 20=3.3%, 50=10.9%, 100=32.8%
     lat (msec): 250=45.9%, 500=5.7%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2619/3226, merge=315/405, ticks=49064/71092, in_queue=120156, util=99.05%
0.30user 0.40system 0:26.99elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2505minor)pagefaults 0swaps