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: [mFm] [33.3% done] [  1771/   363 kb/s] [eta 00m:06s]
Threads: 3: [mFm] [44.4% done] [  1110/ 45380 kb/s] [eta 00m:05s]
Threads: 3: [mFm] [45.5% done] [  3245/     0 kb/s] [eta 00m:06s]
Threads: 3: [mFm] [46.2% done] [  3370/     0 kb/s] [eta 00m:07s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5183, got signal=6
Threads: 2: [FF_] [100.0% done] [   142/ 33744 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FV_] [77.8% done] [ 10707/     0 kb/s] [eta 00m:04s]
Threads: 2: [FV_] [88.2% done] [ 21067/     0 kb/s] [eta 00m:02s]
Threads: 2: [FV_] [100.0% done] [ 19999/     0 kb/s] [eta 00m:00s]
Threads: 2: [FV_] [100.0% done] [ 20816/     0 kb/s] [eta 00m:00s]
Threads: 2: [FV_] [100.0% done] [ 12914/     0 kb/s] [eta 00m:00s]
Threads: 1: [V__] [70.4% done] [ 15316/     0 kb/s] [eta 00m:08s]
Threads: 1: [V__] [87.0% done] [ 27449/     0 kb/s] [eta 00m:03s]
Threads: 1: [V__] [100.0% done] [ 34756/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=5181
  read : io=100MiB, bw=4,622KiB/s, runt= 22623msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  807, avg=33.71, stdev=75.00
    bw (KiB/s) : min=    0, max=35823, per=109.73%, avg=10662.53, stdev=13725.38
  write: io=88,164KiB, bw=4,588KiB/s, runt= 19676msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  671, avg= 4.15, stdev=41.71
    bw (KiB/s) : min=    0, max=27770, per=64.47%, avg=9371.33, stdev=15934.64
  cpu          : usr=3.36%, sys=1.43%, ctx=4669
  IO depths    : 1=3.5%, 2=54.0%, 4=30.4%, 8=12.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=46.8%, 4=0.9%, 10=15.9%, 20=18.2%, 50=10.8%, 100=2.0%
     lat (msec): 250=3.7%, 500=0.8%, 750=0.4%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5182
  read : io=100MiB, bw=5,426KiB/s, runt= 19325msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  401, avg=27.69, stdev=45.87
    bw (KiB/s) : min=    8, max=23478, per=159.58%, avg=15506.25, stdev=7407.46
  write: io=98,988KiB, bw=7,440KiB/s, runt= 13624msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  315, avg= 0.77, stdev=11.99
    bw (KiB/s) : min=    0, max=139567, per=480.07%, avg=69783.50, stdev=98688.77
  cpu          : usr=4.06%, sys=2.01%, ctx=4162
  IO depths    : 1=4.2%, 2=60.0%, 4=27.6%, 8=8.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=54.6%, 4=0.1%, 10=18.2%, 20=13.2%, 50=4.5%, 100=6.4%
     lat (msec): 250=2.4%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5183
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=88.9%, 4=3.3%, 8=7.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=87.9%, 4=1.2%, 10=0.6%, 20=0.2%, 50=1.1%, 100=2.7%
     lat (msec): 250=2.5%, 500=0.8%, 750=1.8%, 1000=0.6%, >=2000=0.3%

Run status group 0 (all jobs):
   READ: io=210MiB, aggrb=9,717KiB/s, minb=0KiB/s, maxb=5,426KiB/s, mint=0msec, maxt=22623msec
  WRITE: io=273MiB, aggrb=14,536KiB/s, minb=0KiB/s, maxb=7,440KiB/s, mint=0msec, maxt=22623msec

Disk stats (read/write):
  sda: ios=1288/2053, merge=8900/67562, ticks=72492/2434892, in_queue=2543044, util=97.52%
2.38user 1.01system 0:23.44elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2484minor)pagefaults 0swaps