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] [8.8% done] [  4738/ 11889 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [12.5% done] [ 13465/  2305 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [14.3% done] [ 11510/  4425 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [16.7% done] [ 10886/  2673 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [20.0% done] [ 11146/  2962 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.2% done] [  8829/  6001 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [24.3% done] [ 10221/  2163 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.0% done] [  5445/  7647 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [29.7% done] [  7801/  5198 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [30.8% done] [  7305/  2204 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [ 11609/   865 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  8825/  3332 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  5663/  4735 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  7850/  2397 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.5% done] [  8163/  2023 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.9% done] [  5827/  3766 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  5993/  2661 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.6% done] [  2588/  4323 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  2432/  6312 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  6343/   828 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.1% done] [  6769/   394 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [52.2% done] [  2196/  4523 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3620, got signal=6
Threads: 2: [m_m] [54.3% done] [  2393/  5412 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3621, got signal=6
Threads: 1: [m__] [60.5% done] [  7996/   808 kb/s] [eta 00m:17s]
Threads: 1: [m__] [65.9% done] [  7476/     0 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3619, got signal=6

fio: (groupid=0): err= 0: pid=3619
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.1%, 4=25.8%, 8=71.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.3%, 10=1.4%, 20=4.9%, 50=33.1%, 100=10.7%
     lat (msec): 250=35.8%, 500=12.0%, 750=1.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3620
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.2%, 4=23.7%, 8=73.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.3%, 10=1.1%, 20=4.0%, 50=6.9%, 100=31.8%
     lat (msec): 250=53.1%, 500=2.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3621
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.9%, 4=24.3%, 8=73.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.2%, 10=0.5%, 20=3.3%, 50=10.2%, 100=27.9%
     lat (msec): 250=52.6%, 500=4.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3639/2061, merge=39/70, ticks=59392/27980, in_queue=87372, util=99.19%
0.21user 0.15system 0:28.10elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2494minor)pagefaults 0swaps