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] [9.1% done] [ 13712/  2308 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [12.5% done] [ 13472/  3852 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [13.5% done] [  6940/  9132 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [17.1% done] [    64/ 15080 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [18.9% done] [  7276/  5128 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [21.6% done] [  8268/  3412 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [24.3% done] [ 11112/  2548 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.0% done] [  5712/  7428 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.6% done] [  5992/  7136 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [33.3% done] [ 10600/  2100 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [36.1% done] [  7376/  4920 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [37.8% done] [ 10584/  1180 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [41.7% done] [  6684/  3916 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [43.2% done] [  9080/  1376 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [44.7% done] [  9449/     0 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [46.2% done] [  8036/  1248 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.5% done] [  3952/  6064 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.8% done] [  5744/  2024 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  6608/  1096 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.4% done] [  2816/  5924 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [54.8% done] [  1252/  7156 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [57.1% done] [  3232/  4120 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5413, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5414, got signal=6
Threads: 1: [m__] [59.5% done] [  3712/  2120 kb/s] [eta 00m:17s]
Threads: 1: [m__] [65.0% done] [  5004/  3576 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5412, got signal=6

fio: (groupid=0): err= 0: pid=5412
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.5%, 4=41.4%, 8=54.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.2%, 4=0.0%, 10=1.3%, 20=5.8%, 50=30.3%, 100=12.5%
     lat (msec): 250=35.2%, 500=12.2%, 750=1.0%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5413
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.3%, 4=26.7%, 8=70.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.0%, 10=0.7%, 20=0.9%, 50=11.1%, 100=28.4%
     lat (msec): 250=54.3%, 500=3.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5414
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=1.6%, 4=25.6%, 8=72.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.9%, 20=2.3%, 50=7.5%, 100=28.4%
     lat (msec): 250=55.5%, 500=4.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3674/2083, merge=570/149, ticks=60852/93812, in_queue=154664, util=99.18%
0.21user 0.35system 0:27.57elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2489minor)pagefaults 0swaps