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] [27.3% done] [  2304/     0 kb/s] [eta 00m:08s]
Threads: 3: [mmm] [40.0% done] [  2460/ 20792 kb/s] [eta 00m:06s]
Threads: 3: [mmm] [45.5% done] [  2730/ 18818 kb/s] [eta 00m:06s]
Threads: 3: [mmm] [54.5% done] [  1712/  8716 kb/s] [eta 00m:05s]
Threads: 3: [Fmm] [53.8% done] [  1828/ 34008 kb/s] [eta 00m:06s]
Threads: 3: [Fmm] [61.5% done] [  1736/ 21072 kb/s] [eta 00m:05s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12176, got signal=6
Threads: 2: [Fm_] [64.3% done] [  2200/  2192 kb/s] [eta 00m:05s]
Threads: 2: [Fm_] [66.7% done] [  4720/     0 kb/s] [eta 00m:05s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12175, got signal=6
Threads: 1: [F__] [100.0% done] [     0/  4652 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [V__] [71.0% done] [  5212/     0 kb/s] [eta 00m:09s]
Threads: 1: [V__] [92.0% done] [ 31444/     0 kb/s] [eta 00m:02s]
Threads: 1: [V__] [100.0% done] [ 35414/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=12174
  read : io=100MiB, bw=4,140KiB/s, runt= 25326msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  799, avg=36.59, stdev=112.11
    bw (KiB/s) : min=    0, max=43180, per=192.19%, avg=9905.39, stdev=15540.08
  write: io=97,112KiB, bw=4,436KiB/s, runt= 22416msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  663, avg= 5.39, stdev=45.42
    bw (KiB/s) : min=    0, max=17657, per=41.41%, avg=5233.40, stdev=7725.63
  cpu          : usr=2.99%, sys=1.09%, ctx=8326
  IO depths    : 1=1.4%, 2=55.9%, 4=29.9%, 8=12.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=49.2%, 4=0.2%, 10=23.4%, 20=18.2%, 50=4.1%, 100=1.0%
     lat (msec): 250=0.9%, 500=1.0%, 750=1.6%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12175
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=74.4%, 4=8.2%, 8=16.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=73.4%, 4=0.4%, 10=1.8%, 20=2.7%, 50=6.9%, 100=3.6%
     lat (msec): 250=3.5%, 500=3.8%, 750=3.5%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12176
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=88.5%, 4=2.7%, 8=8.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=86.7%, 4=2.2%, 10=0.1%, 20=0.2%, 50=1.2%, 100=0.8%
     lat (msec): 250=2.7%, 500=2.7%, 750=2.1%, 1000=0.9%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=124MiB, aggrb=5,154KiB/s, minb=0KiB/s, maxb=4,140KiB/s, mint=0msec, maxt=25326msec
  WRITE: io=270MiB, aggrb=12,639KiB/s, minb=0KiB/s, maxb=4,436KiB/s, mint=0msec, maxt=25326msec

Disk stats (read/write):
  sda: ios=1584/3812, merge=547/64981, ticks=32936/2921912, in_queue=2960800, util=98.62%
2.30user 0.74system 0:25.70elapsed 11%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2514minor)pagefaults 0swaps