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] [8.1% done] [  5277/  6663 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [10.8% done] [  7014/  5884 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [13.2% done] [  6825/  6116 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [16.2% done] [  5848/  8475 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [18.4% done] [  4489/  8530 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [21.6% done] [  2808/ 10117 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [24.3% done] [  6872/  4155 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.0% done] [  2107/  9897 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [28.2% done] [  4710/  4761 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.0% done] [  4521/  4667 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [32.5% done] [  6561/  3394 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [35.0% done] [  5655/  3647 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [37.5% done] [  4832/  6061 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [39.0% done] [  5868/  2985 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.5% done] [  6943/  1216 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.9% done] [  5761/  1500 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  5486/  2812 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.6% done] [  3422/  4296 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.9% done] [  5868/  1433 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [50.0% done] [  4245/  2343 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [52.2% done] [  2969/  3091 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [54.3% done] [  3044/  4099 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.3% done] [  4363/  2819 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.2% done] [  5911/  1126 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [57.1% done] [  2422/  5253 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [58.0% done] [  6214/   129 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12025, got signal=6
Threads: 2: [_mm] [60.0% done] [  2697/  5194 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [60.8% done] [  3595/  4151 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12026, got signal=6
Threads: 1: [__m] [64.0% done] [  4596/  3536 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12027, got signal=6

fio: (groupid=0): err= 0: pid=12025
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.3%, 4=19.3%, 8=79.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.0%, 10=0.2%, 20=2.8%, 50=19.4%, 100=10.8%
     lat (msec): 250=58.9%, 500=6.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12026
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=1.9%, 4=17.4%, 8=80.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.1%, 4=0.0%, 10=0.7%, 20=2.0%, 50=19.3%, 100=3.5%
     lat (msec): 250=64.6%, 500=6.8%, 750=1.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12027
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.1%, 4=18.8%, 8=78.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.4%, 4=0.0%, 10=1.4%, 20=4.3%, 50=15.1%, 100=6.1%
     lat (msec): 250=61.1%, 500=8.6%, 750=1.2%, 1000=0.4%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3033/2544, merge=385/583, ticks=68600/43480, in_queue=112080, util=99.17%
0.11user 0.26system 0:33.48elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2519minor)pagefaults 0swaps