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] [9.7% done] [ 10164/  5652 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [13.8% done] [ 15104/  1176 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [16.7% done] [ 12108/  2716 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [18.8% done] [  8152/  6796 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [21.2% done] [  6776/  8784 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [23.5% done] [  6012/  6784 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [26.5% done] [  3144/ 10120 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [28.6% done] [  9900/  2840 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [31.4% done] [  7296/  5292 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [33.3% done] [  8280/  4000 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [36.1% done] [  4504/  8244 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [38.9% done] [  8064/  3812 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [41.7% done] [  8784/  1756 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [44.4% done] [  7296/  4576 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [45.9% done] [  8432/   608 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [48.6% done] [  6624/  2096 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [50.0% done] [  4972/  3876 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [51.3% done] [  3284/  5820 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [52.5% done] [  5368/  2576 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [55.0% done] [  3692/  5020 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [54.8% done] [  4083/  3815 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18709, got signal=6
Threads: 2: [m_m] [58.5% done] [  3032/  5684 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18710, got signal=6
Threads: 1: [m__] [61.0% done] [  1972/  4676 kb/s] [eta 00m:16s]
Threads: 1: [m__] [66.7% done] [  7344/    84 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18708, got signal=6

fio: (groupid=0): err= 0: pid=18708
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=3.9%, 4=35.6%, 8=59.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.0%, 4=0.0%, 10=1.6%, 20=4.5%, 50=30.2%, 100=13.6%
     lat (msec): 250=34.0%, 500=13.1%, 750=1.3%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18709
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.4%, 4=30.7%, 8=66.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=1.0%, 20=4.2%, 50=17.1%, 100=19.9%
     lat (msec): 250=54.7%, 500=2.4%, 750=0.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18710
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=3.1%, 4=30.8%, 8=65.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=1.2%, 20=2.1%, 50=13.1%, 100=28.1%
     lat (msec): 250=48.0%, 500=5.9%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3432/2291, merge=418/174, ticks=62176/58772, in_queue=120944, util=99.16%
0.28user 0.35system 0:27.26elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2490minor)pagefaults 0swaps