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] [8.8% done] [  6812/  8800 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [13.3% done] [  8932/  8944 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [16.1% done] [ 12468/  3092 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [18.2% done] [  6820/  5768 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [20.6% done] [  7840/  6260 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [22.2% done] [ 10984/  1988 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.0% done] [  4248/  9664 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.8% done] [  5248/  7116 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [28.2% done] [  1720/ 11436 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [29.3% done] [  7588/  5112 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [31.7% done] [  4336/  7052 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [34.1% done] [  8856/  2176 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [36.6% done] [  9976/   412 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [39.0% done] [  4884/  6188 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.5% done] [  5656/  3704 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [42.9% done] [  4008/  5240 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [44.2% done] [  6068/  3308 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [46.5% done] [  4120/  5352 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  2932/  5516 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8223, got signal=6
Threads: 2: [mm_] [50.0% done] [  5792/  2336 kb/s] [eta 00m:22s]
Threads: 2: [mm_] [52.3% done] [  2332/  4812 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8222, got signal=6
Threads: 1: [m__] [54.5% done] [  6000/  2024 kb/s] [eta 00m:20s]
Threads: 1: [m__] [61.0% done] [  9264/     0 kb/s] [eta 00m:16s]
Threads: 1: [m__] [66.7% done] [  7576/     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=8221, got signal=6

fio: (groupid=0): err= 0: pid=8221
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.4%, 4=26.1%, 8=72.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.2%, 20=3.7%, 50=37.5%, 100=14.2%
     lat (msec): 250=26.9%, 500=15.8%, 750=0.6%, 1000=0.0%, >=2000=0.5%
fio: (groupid=0): err= 0: pid=8222
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=1.1%, 4=29.1%, 8=69.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=1.0%, 20=4.5%, 50=18.0%, 100=24.5%
     lat (msec): 250=44.8%, 500=6.2%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8223
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=2.4%, 4=34.4%, 8=62.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.3%, 10=1.6%, 20=4.6%, 50=17.6%, 100=26.4%
     lat (msec): 250=45.1%, 500=3.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3198/2482, merge=504/201, ticks=53736/44780, in_queue=98512, util=99.15%
0.26user 0.34system 0:27.25elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2492minor)pagefaults 0swaps