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] [  4140/  9632 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [11.4% done] [  6732/  6244 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [14.7% done] [  4696/  9184 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [17.1% done] [  8756/  4148 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [20.0% done] [  4136/  7340 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.2% done] [  6932/  4296 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.0% done] [  2024/ 11192 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.8% done] [  5472/  5060 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [28.9% done] [  4236/  4676 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.8% done] [  5768/  3540 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  5176/  4132 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.0% done] [  3072/  7584 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [37.5% done] [  5980/  4936 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [39.0% done] [  5644/  3712 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.5% done] [  4796/  2936 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [42.9% done] [  4316/  5500 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [45.2% done] [  2556/  5132 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.5% done] [  1876/  6312 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  4996/  2632 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [48.9% done] [  2788/  3904 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [51.1% done] [  6012/  1192 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [52.2% done] [  4016/  2172 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [54.3% done] [  2908/  4220 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.5% done] [  1752/  5028 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [58.7% done] [  3520/  2916 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [59.6% done] [  2340/  3900 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [60.4% done] [  1732/  5532 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [61.2% done] [  2884/  4884 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5114, got signal=6
Threads: 2: [m_m] [62.0% done] [  5908/  1228 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5113, got signal=6
Threads: 1: [__m] [64.0% done] [  6660/   344 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5115, got signal=6

fio: (groupid=0): err= 0: pid=5113
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.6%, 4=16.5%, 8=82.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.0%, 10=0.5%, 20=4.2%, 50=16.9%, 100=9.9%
     lat (msec): 250=59.8%, 500=7.1%, 750=0.4%, 1000=0.4%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5114
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=0.8%, 4=18.9%, 8=80.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.2%, 10=1.6%, 20=4.8%, 50=14.7%, 100=5.8%
     lat (msec): 250=62.2%, 500=10.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5115
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=14.8%, 8=84.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=0.0%, 20=3.6%, 50=15.3%, 100=5.1%
     lat (msec): 250=66.2%, 500=8.6%, 750=0.4%, 1000=0.2%, >=2000=0.2%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2991/2721, merge=608/448, ticks=70536/49288, in_queue=119824, util=99.16%
0.18user 0.26system 0:33.84elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2523minor)pagefaults 0swaps