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] [8.6% done] [  5412/ 12088 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [11.8% done] [ 10652/  3888 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [14.7% done] [ 11208/  4432 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [16.7% done] [  9060/  4672 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [19.4% done] [  6576/  7800 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [22.2% done] [ 11256/  2304 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [23.1% done] [  5432/  8100 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [26.3% done] [  9164/  3136 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.9% done] [  8924/  3856 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.8% done] [  5080/  6796 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  6588/  5272 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.8% done] [  8480/  3780 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [40.5% done] [  9320/  3036 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [44.4% done] [  2520/  8952 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [45.9% done] [  4240/  5916 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [48.6% done] [  4480/  5336 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [50.0% done] [  5732/  2576 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [51.3% done] [  5876/  1736 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [52.5% done] [  8168/   180 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [55.0% done] [  4648/  3224 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [56.1% done] [  5640/  3028 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [57.1% done] [  5496/   276 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18396, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18397, got signal=6
Threads: 1: [m__] [59.5% done] [  2144/  5616 kb/s] [eta 00m:17s]
Threads: 1: [m__] [65.0% done] [  4228/  4152 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18395, got signal=6

fio: (groupid=0): err= 0: pid=18395
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=4.1%, 4=37.5%, 8=57.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.7%, 4=0.1%, 10=2.1%, 20=4.9%, 50=26.9%, 100=15.6%
     lat (msec): 250=34.6%, 500=11.9%, 750=1.6%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18396
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.8%, 4=28.3%, 8=69.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.2%, 10=0.8%, 20=1.5%, 50=9.0%, 100=29.7%
     lat (msec): 250=54.3%, 500=3.4%, 750=0.0%, 1000=0.5%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18397
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.4%, 4=32.0%, 8=64.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.2%, 10=2.1%, 20=2.9%, 50=11.4%, 100=27.4%
     lat (msec): 250=49.3%, 500=5.5%, 750=0.5%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3181/2443, merge=453/121, ticks=56432/55776, in_queue=112208, util=98.78%
0.25user 0.45system 0:27.51elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2497minor)pagefaults 0swaps