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] [5.0% done] [  8044/  7472 kb/s] [eta 00m:57s]
Threads: 3: [mmm] [6.7% done] [ 11016/  5808 kb/s] [eta 00m:56s]
Threads: 3: [mmm] [8.3% done] [ 11176/  4372 kb/s] [eta 00m:55s]
Threads: 3: [mmm] [10.0% done] [ 10520/  9108 kb/s] [eta 00m:54s]
Threads: 3: [mmm] [11.7% done] [ 11880/  4864 kb/s] [eta 00m:53s]
Threads: 3: [mmm] [13.3% done] [  6028/ 12840 kb/s] [eta 00m:52s]
Threads: 3: [mmm] [18.0% done] [ 11428/  6720 kb/s] [eta 00m:41s]
Threads: 3: [mmm] [23.8% done] [  7768/ 10228 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [28.2% done] [  6520/  8452 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [33.3% done] [  9008/  6168 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [36.1% done] [  7632/  3864 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [38.9% done] [  5608/  6528 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [41.7% done] [  5852/  6176 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [45.7% done] [  6236/  5136 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [48.6% done] [  6168/  5256 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [51.4% done] [  8548/   436 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [52.8% done] [  2688/  6404 kb/s] [eta 00m:17s]
fio: pid=20112, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20111, got signal=6
Threads: 1: [__m] [55.6% done] [  6444/  1416 kb/s] [eta 00m:16s]
Threads: 1: [__m] [61.8% done] [  5216/  4020 kb/s] [eta 00m:13s]
Threads: 1: [__m] [66.7% done] [  8508/     0 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20113, got signal=6

fio: (groupid=0): err= 0: pid=20111
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.1%, 4=33.9%, 8=62.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=0.8%, 20=1.9%, 50=18.7%, 100=34.2%
     lat (msec): 250=41.7%, 500=1.7%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20112
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.1%, 2=4.5%, 4=33.9%, 8=60.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=2.1%, 4=0.3%, 10=1.5%, 20=3.4%, 50=15.5%, 100=35.2%
     lat (msec): 250=40.3%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20113
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.4%, 4=41.6%, 8=55.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.1%, 10=2.2%, 20=6.1%, 50=38.0%, 100=17.9%
     lat (msec): 250=30.7%, 500=3.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3119/2404, merge=586/828, ticks=36980/546404, in_queue=447344, util=99.17%
0.26user 0.40system 0:23.18elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2480minor)pagefaults 0swaps