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] [  8952/  4312 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [11.4% done] [  9036/  3808 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [14.3% done] [  7048/  6660 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [17.6% done] [  7108/  5488 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.6% done] [  6120/  5632 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [22.9% done] [  7968/  3380 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [24.3% done] [  6228/  4216 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.0% done] [  7228/  3576 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [28.9% done] [  6988/  1504 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [31.6% done] [ 10476/   300 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  8484/  1032 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  6464/  3664 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  2876/  7760 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  6852/  3664 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.5% done] [  4044/  3396 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.9% done] [  7232/  1656 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [45.2% done] [  2884/  6260 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.6% done] [  1540/  8436 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  3504/  4912 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  5193/  1198 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  2568/  4047 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  4148/  2698 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.3% done] [  1796/  5501 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.3% done] [  3974/  2698 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.2% done] [  4396/  2576 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5169, got signal=6
Threads: 2: [_mm] [56.0% done] [  3739/  2594 kb/s] [eta 00m:22s]
Threads: 2: [_mm] [58.0% done] [  3177/  5258 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [_mm] [57.7% done] [  1820/  5697 kb/s] [eta 00m:22s]
fio: pid=5170, got signal=6
Threads: 1: [__m] [63.3% done] [  3990/  4701 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5171, got signal=6

fio: (groupid=0): err= 0: pid=5169
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.0%, 4=16.7%, 8=82.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.6%, 20=4.4%, 50=18.4%, 100=10.2%
     lat (msec): 250=60.5%, 500=5.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5170
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.3%, 4=16.2%, 8=81.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.4%, 10=0.9%, 20=5.3%, 50=15.8%, 100=7.9%
     lat (msec): 250=60.9%, 500=7.0%, 750=0.8%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5171
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.5%, 4=16.7%, 8=81.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.7%, 10=1.4%, 20=4.8%, 50=17.6%, 100=6.1%
     lat (msec): 250=58.9%, 500=7.9%, 750=1.1%, 1000=0.4%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3023/2487, merge=538/415, ticks=72928/36420, in_queue=109348, util=99.20%
0.14user 0.19system 0:32.75elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2516minor)pagefaults 0swaps