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] [9.7% done] [  9420/  6238 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [12.5% done] [ 14879/  1169 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [16.7% done] [ 12547/  3662 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [19.4% done] [ 12295/  2823 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [22.6% done] [  6971/  9192 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [22.9% done] [  8696/  1721 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [25.0% done] [  4773/  8995 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.8% done] [ 10968/  1315 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [30.6% done] [  9558/  2835 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [32.4% done] [  9739/  3639 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [34.2% done] [  7758/  3816 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [36.8% done] [  6518/  5084 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [39.5% done] [  5714/  5415 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [41.0% done] [  7597/  3292 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.6% done] [  4017/  6510 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.2% done] [  5116/  4202 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.7% done] [  6604/  1276 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  6856/  1539 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [52.5% done] [  5234/  2658 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [55.0% done] [  1346/  7754 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [56.1% done] [  3619/  4399 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [57.1% done] [  4115/  2044 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25318, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [m_m] [61.0% done] [  2099/  5722 kb/s] [eta 00m:16s]
fio: pid=25319, got signal=6
Threads: 1: [m__] [65.9% done] [  5970/  1106 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25317, got signal=6

fio: (groupid=0): err= 0: pid=25317
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=4.0%, 4=39.6%, 8=55.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.5%, 4=0.1%, 10=0.6%, 20=8.1%, 50=26.3%, 100=14.0%
     lat (msec): 250=33.5%, 500=14.1%, 750=1.1%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25318
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=2.8%, 4=28.9%, 8=67.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.0%, 10=0.8%, 20=3.7%, 50=12.7%, 100=26.4%
     lat (msec): 250=51.8%, 500=3.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25319
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.2%, 4=32.9%, 8=64.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.0%, 10=0.5%, 20=3.0%, 50=11.0%, 100=28.4%
     lat (msec): 250=51.4%, 500=4.4%, 750=0.4%, 1000=0.2%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3532/2272, merge=670/204, ticks=62020/50892, in_queue=112904, util=99.12%
0.24user 0.29system 0:27.53elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2492minor)pagefaults 0swaps