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: [FmF] [27.3% done] [  4428/ 60724 kb/s] [eta 00m:08s]
Threads: 3: [FmF] [66.7% done] [  1576/ 48784 kb/s] [eta 00m:02s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16013, got signal=6
Threads: 2: [F_F] [100.0% done] [     0/ 12536 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: [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: 1: [V__] [81.0% done] [ 17280/     0 kb/s] [eta 00m:04s]
Threads: 1: [V__] [100.0% done] [ 35280/     0 kb/s] [eta 00m:00s]
Threads: 1: [V__] [100.0% done] [ 36320/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=16012
  read : io=100MiB, bw=5,346KiB/s, runt= 19613msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  242, avg=22.25, stdev=37.51
    bw (KiB/s) : min=    6, max=40083, per=315.10%, avg=19101.30, stdev=16975.62
  write: io=91,548KiB, bw=5,560KiB/s, runt= 16860msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  114, avg= 1.20, stdev= 5.77
    bw (KiB/s) : min=    0, max=60403, per=158.73%, avg=27238.67, stdev=30634.39
  cpu          : usr=3.92%, sys=1.67%, ctx=6670
  IO depths    : 1=1.4%, 2=53.1%, 4=31.8%, 8=13.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=46.0%, 4=1.3%, 10=22.5%, 20=18.9%, 50=6.2%, 100=2.2%
     lat (msec): 250=2.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16013
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=5.8%, 2=81.7%, 4=3.9%, 8=8.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=86.3%, 4=0.7%, 10=1.3%, 20=1.8%, 50=0.7%, 100=1.3%
     lat (msec): 250=5.8%, 500=1.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16014
  read : io=0KiB, bw=0KiB/s, runt= 16889msec
  write: io=100MiB, bw=6,220KiB/s, runt= 16856msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=    3, avg= 0.18, stdev= 0.40
    bw (KiB/s) : min=    0, max=129428, per=377.12%, avg=64714.00, stdev=91519.42
  cpu          : usr=4.88%, sys=1.80%, ctx=5466
  IO depths    : 1=0.2%, 2=98.0%, 4=1.7%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=99.1%, 4=0.4%, 10=0.0%, 20=0.0%, 50=0.0%, 100=0.0%
     lat (msec): 250=0.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=113MiB, aggrb=6,062KiB/s, minb=0KiB/s, maxb=5,346KiB/s, mint=16889msec, maxt=19613msec
  WRITE: io=276MiB, aggrb=17,160KiB/s, minb=0KiB/s, maxb=6,220KiB/s, mint=16889msec, maxt=19613msec

Disk stats (read/write):
  sda: ios=1418/3143, merge=418/67187, ticks=14076/2219716, in_queue=2238728, util=97.92%
2.37user 0.90system 0:19.93elapsed 16%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2461minor)pagefaults 0swaps