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] [  9048/  3064 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [10.8% done] [ 11536/     0 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [13.9% done] [  6468/  7252 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [16.7% done] [ 10500/  2864 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [20.0% done] [  7384/  4048 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.2% done] [  9260/  1844 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.0% done] [  5484/  7028 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.8% done] [  9844/  1588 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [29.7% done] [  6456/  5032 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [31.6% done] [  2696/  8280 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [34.2% done] [  4696/  6760 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [36.8% done] [  6388/  3136 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [38.5% done] [  3404/  6696 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.0% done] [  5252/  4172 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.5% done] [  4848/  3836 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  5144/  3588 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  6068/  1456 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  5444/  1940 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  5292/  2808 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  3728/  2792 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.5% done] [  3524/  4616 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [54.5% done] [  2232/  5236 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [55.6% done] [  5620/  1124 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.5% done] [   460/  7636 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.2% done] [  4156/  3796 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20460, got signal=6
Threads: 2: [_mm] [58.3% done] [  2988/  3784 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [59.2% done] [  4896/  3476 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20461, got signal=6
Threads: 1: [__m] [61.2% done] [  2312/  4936 kb/s] [eta 00m:19s]
Threads: 1: [__m] [66.0% done] [  6396/  1424 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20462, got signal=6

fio: (groupid=0): err= 0: pid=20460
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.6%, 4=19.4%, 8=78.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.1%, 10=1.2%, 20=3.1%, 50=16.1%, 100=12.5%
     lat (msec): 250=60.5%, 500=5.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20461
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.6%, 4=16.3%, 8=81.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.3%, 10=1.7%, 20=4.4%, 50=16.0%, 100=3.3%
     lat (msec): 250=62.7%, 500=10.6%, 750=0.3%, 1000=0.5%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20462
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.8%, 4=14.7%, 8=84.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.9%, 20=1.6%, 50=20.7%, 100=4.8%
     lat (msec): 250=60.8%, 500=9.4%, 750=0.6%, 1000=0.5%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2924/2453, merge=454/385, ticks=70508/39892, in_queue=110400, util=99.21%
0.11user 0.22system 0:32.43elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2514minor)pagefaults 0swaps