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] [9.4% done] [  3908/ 12144 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [13.3% done] [ 13528/  2612 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [15.6% done] [  5336/ 11796 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [19.4% done] [  8680/  7508 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [22.6% done] [ 10796/  2424 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [25.0% done] [  8836/  4464 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [26.5% done] [  5576/  5332 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [29.4% done] [ 10500/  2300 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [32.4% done] [  4660/  8704 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [34.3% done] [  6048/  6428 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [37.1% done] [  6328/  5868 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [38.9% done] [  8412/  2708 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [41.7% done] [  5460/  5796 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [43.2% done] [  5572/  4708 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [44.7% done] [  6004/  3692 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.4% done] [  3616/  6784 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  1724/  7892 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [51.3% done] [  3912/  4372 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [53.8% done] [  2968/  5948 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [55.0% done] [  2800/  5548 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [56.1% done] [  6720/   336 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [57.1% done] [  6116/     0 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25473, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25474, got signal=6
Threads: 1: [m__] [61.0% done] [  1548/  6776 kb/s] [eta 00m:16s]
Threads: 1: [m__] [66.7% done] [  7220/   504 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25472, got signal=6

fio: (groupid=0): err= 0: pid=25472
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.8%, 4=39.7%, 8=57.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.0%, 10=2.1%, 20=4.4%, 50=29.2%, 100=12.4%
     lat (msec): 250=37.4%, 500=12.0%, 750=1.2%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25473
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.0%, 4=33.8%, 8=63.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.1%, 10=0.7%, 20=2.9%, 50=15.4%, 100=28.3%
     lat (msec): 250=47.7%, 500=3.8%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25474
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.7%, 4=34.2%, 8=62.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=1.2%, 20=2.4%, 50=14.8%, 100=23.3%
     lat (msec): 250=53.3%, 500=4.4%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3175/2596, merge=272/364, ticks=53564/130896, in_queue=184460, util=99.14%
0.21user 0.29system 0:27.21elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2492minor)pagefaults 0swaps