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] [  7276/  9712 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [12.9% done] [  7068/  8316 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [14.7% done] [ 13252/  3028 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [17.6% done] [  5836/  9248 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.0% done] [  4972/  8120 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [23.5% done] [  5652/  7984 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [26.5% done] [  7860/  4904 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [28.6% done] [  5520/  6756 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [31.4% done] [  8108/  4140 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [33.3% done] [  9708/  1792 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [35.1% done] [  8684/  4268 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [37.8% done] [ 10860/   696 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [41.7% done] [  8636/  4192 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [43.2% done] [  6444/  4368 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [45.9% done] [  7008/  2324 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [47.4% done] [  6932/  1920 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [48.7% done] [  7524/  1220 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [51.3% done] [  6532/   880 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [52.5% done] [  2984/  5304 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [55.0% done] [  4348/  3012 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [57.5% done] [  4792/  3984 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [60.0% done] [  2912/  4860 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14555, got signal=6
Threads: 2: [m_m] [59.5% done] [  3948/  2964 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14556, got signal=6
Threads: 1: [m__] [61.9% done] [  4364/  1788 kb/s] [eta 00m:16s]
Threads: 1: [m__] [67.5% done] [  6652/     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=14554, got signal=6

fio: (groupid=0): err= 0: pid=14554
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.1%, 4=36.2%, 8=60.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.1%, 10=1.5%, 20=4.7%, 50=26.3%, 100=14.1%
     lat (msec): 250=40.5%, 500=10.2%, 750=1.2%, 1000=0.5%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14555
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.8%, 4=30.9%, 8=65.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=1.4%, 20=2.3%, 50=12.7%, 100=24.1%
     lat (msec): 250=54.7%, 500=3.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14556
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.4%, 4=29.6%, 8=67.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.0%, 10=0.5%, 20=1.5%, 50=12.0%, 100=27.1%
     lat (msec): 250=52.9%, 500=4.2%, 750=0.8%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3654/2260, merge=345/317, ticks=59864/62028, in_queue=121892, util=98.68%
0.22user 0.41system 0:28.31elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2492minor)pagefaults 0swaps