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] [12.5% done] [ 17864/  1403 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.7% done] [ 18176/     0 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [ 14616/  5944 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [26.1% done] [ 11296/  6684 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.9% done] [  8126/  8813 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [30.8% done] [  9496/  8009 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [34.6% done] [  3506/ 13815 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [37.0% done] [ 11434/  2133 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [40.7% done] [ 11515/  2901 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.9% done] [  9085/  3226 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [46.4% done] [  9768/  1714 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.3% done] [  6269/  6278 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [51.7% done] [  5782/  5132 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.3% done] [ 10309/   979 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [54.8% done] [  6607/  3929 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [58.1% done] [  5554/  3453 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [59.4% done] [  6883/  1828 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [60.6% done] [  6127/  1531 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [61.8% done] [  4132/  4169 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26449, got signal=6
fio: pid=26450, got signal=6
Threads: 1: [m__] [66.7% done] [  8151/   113 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26448, got signal=6

fio: (groupid=0): err= 0: pid=26448
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=1.2%, 4=23.5%, 8=75.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.2%, 10=0.8%, 20=6.0%, 50=18.8%, 100=26.5%
     lat (msec): 250=43.8%, 500=2.7%, 750=0.4%, 1000=0.3%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26449
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.6%, 4=24.2%, 8=72.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.6%, 10=1.6%, 20=4.2%, 50=14.3%, 100=29.3%
     lat (msec): 250=46.8%, 500=1.7%, 750=0.3%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26450
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.6%, 4=24.2%, 8=73.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.8%, 10=0.6%, 20=3.8%, 50=13.9%, 100=38.0%
     lat (msec): 250=41.5%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3578/1803, merge=481/197, ticks=47772/30772, in_queue=78544, util=99.02%
0.24user 0.42system 0:22.87elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2470minor)pagefaults 0swaps