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] [ 12600/  4855 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [11.4% done] [ 10906/  4469 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [14.7% done] [ 11795/  5535 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [17.6% done] [  9703/  5018 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.0% done] [  7887/  6668 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.2% done] [  6582/  5396 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [24.3% done] [  4100/ 10406 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [26.3% done] [  8594/  3405 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.2% done] [ 10928/  1481 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.8% done] [  5818/  7009 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  4144/  8439 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  6590/  5136 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  8261/  2690 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  8984/  2153 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.5% done] [  4327/  6013 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.9% done] [  3092/  5904 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  2389/  6708 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  4608/  3099 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.7% done] [  5111/  1909 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.8% done] [  4559/  3043 kb/s] [eta 00m:24s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11234, got signal=6
Threads: 2: [mm_] [48.9% done] [  6481/   130 kb/s] [eta 00m:24s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11233, got signal=6
Threads: 1: [m__] [54.5% done] [  6887/  2836 kb/s] [eta 00m:20s]
Threads: 1: [m__] [59.5% done] [  7866/  1182 kb/s] [eta 00m:17s]
Threads: 1: [m__] [65.0% done] [  3770/  4242 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11232, got signal=6

fio: (groupid=0): err= 0: pid=11232
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.7%, 4=28.6%, 8=69.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.5%, 10=2.2%, 20=5.1%, 50=41.6%, 100=9.0%
     lat (msec): 250=23.2%, 500=15.3%, 750=1.4%, 1000=0.3%, >=2000=0.5%
fio: (groupid=0): err= 0: pid=11233
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.6%, 4=29.5%, 8=68.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.4%, 10=1.0%, 20=3.2%, 50=22.2%, 100=19.5%
     lat (msec): 250=47.7%, 500=5.3%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11234
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.4%, 4=30.3%, 8=68.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.2%, 10=0.7%, 20=3.8%, 50=15.3%, 100=29.7%
     lat (msec): 250=45.5%, 500=4.2%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3310/2427, merge=542/42, ticks=52732/32652, in_queue=85376, util=98.66%
0.19user 0.26system 0:27.31elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2492minor)pagefaults 0swaps