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: [mmF] [50.0% done] [  1196/126532 kb/s] [eta 00m:03s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13555, got signal=6
Threads: 2: [m_F] [44.4% done] [   572/ 13048 kb/s] [eta 00m:05s]
Threads: 2: [m_F] [45.5% done] [   856/     0 kb/s] [eta 00m:06s]
Threads: 2: [m_F] [46.2% done] [   412/     0 kb/s] [eta 00m:07s]
Threads: 2: [F_F] [100.0% done] [   156/ 34536 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [68.0% done] [   272/     0 kb/s] [eta 00m:08s]
Threads: 2: [V_V] [72.0% done] [ 23664/     0 kb/s] [eta 00m:07s]
Threads: 2: [V_V] [79.2% done] [ 28440/     0 kb/s] [eta 00m:05s]
Threads: 2: [V_V] [90.9% done] [ 33776/     0 kb/s] [eta 00m:02s]
Threads: 2: [V_V] [100.0% done] [ 41148/     0 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [100.0% done] [ 34348/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=13554
  read : io=100MiB, bw=4,445KiB/s, runt= 23586msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  942, avg=51.21, stdev=128.52
    bw (KiB/s) : min=    0, max=24210, per=87.08%, avg=7921.39, stdev=9276.79
  write: io=98,336KiB, bw=5,805KiB/s, runt= 17344msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  607, avg= 3.92, stdev=38.19
    bw (KiB/s) : min=    0, max=37051, per=55.08%, avg=9592.25, stdev=18310.13
  cpu          : usr=3.29%, sys=1.44%, ctx=5320
  IO depths    : 1=1.8%, 2=56.3%, 4=30.1%, 8=11.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=49.8%, 4=0.6%, 10=23.1%, 20=12.9%, 50=4.2%, 100=0.7%
     lat (msec): 250=5.7%, 500=1.6%, 750=0.8%, 1000=0.6%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13555
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=96.3%, 4=1.5%, 8=2.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=96.8%, 4=0.2%, 10=0.0%, 20=0.0%, 50=0.1%, 100=0.2%
     lat (msec): 250=0.7%, 500=0.7%, 750=0.6%, 1000=0.5%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13556
  read : io=100MiB, bw=4,529KiB/s, runt= 23144msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  855, avg=32.62, stdev=74.30
    bw (KiB/s) : min=    6, max=27619, per=144.24%, avg=13121.43, stdev=9674.72
  write: io=99,068KiB, bw=5,854KiB/s, runt= 17327msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  615, avg= 1.85, stdev=28.68
    bw (KiB/s) : min=    0, max=139657, per=400.97%, avg=69828.50, stdev=98752.41
  cpu          : usr=3.28%, sys=1.68%, ctx=5279
  IO depths    : 1=1.5%, 2=57.0%, 4=30.7%, 8=10.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=50.8%, 4=0.2%, 10=21.7%, 20=14.7%, 50=4.6%, 100=1.2%
     lat (msec): 250=5.7%, 500=0.5%, 750=0.2%, 1000=0.2%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=205MiB, aggrb=9,097KiB/s, minb=0KiB/s, maxb=4,529KiB/s, mint=23144msec, maxt=23586msec
  WRITE: io=288MiB, aggrb=17,415KiB/s, minb=0KiB/s, maxb=5,854KiB/s, mint=23144msec, maxt=23586msec

Disk stats (read/write):
  sda: ios=2114/2962, merge=864/70544, ticks=49220/2327964, in_queue=2379716, util=98.94%
2.34user 0.94system 0:23.90elapsed 13%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2489minor)pagefaults 0swaps