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] [8.3% done] [ 10640/  8024 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [11.8% done] [ 10232/  4028 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [15.2% done] [  8972/  7916 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [18.8% done] [ 10453/  3920 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [20.6% done] [  9016/  6296 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [25.0% done] [  9552/  3504 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [27.3% done] [  9392/  2996 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [28.6% done] [  8228/  4664 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [29.7% done] [  8632/  4860 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [32.4% done] [  5381/  6866 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [34.2% done] [  7396/  3628 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.9% done] [ 10724/     0 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  7816/  2592 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.0% done] [  2457/  9276 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.5% done] [  2884/  5744 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  3548/  6084 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  3924/  5864 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  3600/  3864 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  6004/  3156 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  4352/  2788 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  2468/  4796 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=929, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=930, got signal=6
Threads: 1: [m__] [55.8% done] [  4752/  3236 kb/s] [eta 00m:19s]
Threads: 1: [m__] [62.5% done] [  4156/  4524 kb/s] [eta 00m:15s]
Threads: 1: [m__] [66.7% done] [  7816/     0 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=928, got signal=6

fio: (groupid=0): err= 0: pid=928
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.2%, 4=34.2%, 8=63.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=0.5%, 20=5.3%, 50=37.2%, 100=11.6%
     lat (msec): 250=27.8%, 500=15.0%, 750=1.7%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=929
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.5%, 4=31.7%, 8=65.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.1%, 10=1.1%, 20=2.5%, 50=12.8%, 100=25.5%
     lat (msec): 250=53.2%, 500=3.5%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=930
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=2.1%, 4=31.2%, 8=66.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=1.2%, 20=3.2%, 50=13.7%, 100=29.8%
     lat (msec): 250=46.6%, 500=4.8%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3335/2436, merge=434/195, ticks=57000/38188, in_queue=95180, util=99.07%
0.21user 0.36system 0:27.18elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2504minor)pagefaults 0swaps