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] [7.7% done] [  5508/ 11200 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [11.8% done] [ 10908/  6640 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [14.3% done] [ 12408/  2536 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [16.7% done] [ 11384/  2316 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [17.9% done] [ 12873/     0 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [20.5% done] [ 10436/  1941 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [23.1% done] [  8235/  5041 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [27.0% done] [  4808/  8184 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.6% done] [ 11287/  2256 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [33.3% done] [  4485/  7754 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [37.1% done] [  4875/  7223 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [38.9% done] [  7420/  4029 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [40.5% done] [  5498/  4525 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [43.2% done] [  5679/  5210 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [44.7% done] [  8652/  1602 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [46.2% done] [  6532/  3015 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.7% done] [  5395/  3446 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  6258/  1185 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [51.2% done] [  6017/  1937 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [52.4% done] [  6785/   929 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [53.5% done] [  3710/  4671 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12523, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12524, got signal=6
Threads: 1: [m__] [55.8% done] [  2044/  5722 kb/s] [eta 00m:19s]
Threads: 1: [m__] [61.9% done] [  8294/   653 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [m__] [67.5% done] [     0/  7683 kb/s] [eta 00m:13s]
fio: pid=12522, got signal=6

fio: (groupid=0): err= 0: pid=12522
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.1%, 2=4.4%, 4=33.2%, 8=61.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.4%, 4=0.0%, 10=1.6%, 20=7.7%, 50=29.0%, 100=11.2%
     lat (msec): 250=33.0%, 500=14.7%, 750=1.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12523
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.2%, 4=35.2%, 8=62.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=0.7%, 20=3.9%, 50=15.0%, 100=27.5%
     lat (msec): 250=46.4%, 500=5.7%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12524
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.7%, 4=29.4%, 8=67.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.5%, 20=3.3%, 50=10.4%, 100=27.8%
     lat (msec): 250=52.9%, 500=4.2%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3217/2456, merge=644/165, ticks=58208/39824, in_queue=98032, util=98.61%
0.26user 0.35system 0:27.39elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2489minor)pagefaults 0swaps