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] [9.4% done] [  5776/  9348 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [12.1% done] [ 10230/  5826 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [14.7% done] [ 10640/  5354 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [17.6% done] [  5348/ 11664 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [19.4% done] [  2560/  9824 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [21.1% done] [  6828/  5924 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [23.1% done] [  7464/  4692 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [26.3% done] [  6565/  6769 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [29.7% done] [  6925/  6677 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [31.6% done] [  6344/  5972 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [32.5% done] [  2025/ 10446 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [35.0% done] [  8128/  3196 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [37.5% done] [  5656/  6008 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.0% done] [  6154/  5108 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.5% done] [  6840/  2064 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.0% done] [  2928/  8092 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.5% done] [  2032/  7204 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.8% done] [  6024/  2180 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  5052/  2202 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [53.7% done] [  4840/  3312 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2020, got signal=6
Threads: 2: [m_m] [54.8% done] [  1552/  5836 kb/s] [eta 00m:19s]
Threads: 2: [m_m] [60.0% done] [  1356/  7164 kb/s] [eta 00m:16s]
Threads: 2: [m_m] [64.1% done] [  3744/  3612 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2021, got signal=6
Threads: 1: [m__] [65.0% done] [  4764/  2416 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2019, got signal=6

fio: (groupid=0): err= 0: pid=2019
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=5.1%, 4=41.6%, 8=52.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.1%, 10=2.4%, 20=5.3%, 50=28.6%, 100=18.2%
     lat (msec): 250=29.8%, 500=12.3%, 750=1.7%, 1000=0.6%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2020
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.9%, 4=38.1%, 8=57.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.1%, 10=1.8%, 20=4.4%, 50=18.3%, 100=24.5%
     lat (msec): 250=46.0%, 500=4.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2021
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.3%, 4=34.2%, 8=64.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=1.0%, 20=1.7%, 50=14.4%, 100=23.8%
     lat (msec): 250=53.6%, 500=4.5%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2818/3010, merge=400/345, ticks=49400/145108, in_queue=194508, util=99.13%
0.24user 0.54system 0:27.44elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2499minor)pagefaults 0swaps