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] [5.0% done] [  1837/  4468 kb/s] [eta 00m:57s]
Threads: 3: [mFm] [6.7% done] [  2084/   704 kb/s] [eta 00m:56s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10272, got signal=6
Threads: 2: [_Fm] [50.0% done] [   828/ 98328 kb/s] [eta 00m:05s]
Threads: 2: [_Fm] [54.5% done] [   712/  2432 kb/s] [eta 00m:05s]
Threads: 2: [_Fm] [53.8% done] [   768/     0 kb/s] [eta 00m:06s]
Threads: 2: [_Fm] [53.3% done] [   944/     0 kb/s] [eta 00m:07s]
Threads: 2: [_FF] [100.0% done] [   764/ 21488 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: 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] [80.0% done] [ 18412/     0 kb/s] [eta 00m:04s]
Threads: 1: [__V] [100.0% done] [ 30692/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [100.0% done] [ 33476/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=10272
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=92.3%, 4=3.7%, 8=3.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=93.2%, 4=1.2%, 10=0.7%, 20=0.4%, 50=0.1%, 100=0.3%
     lat (msec): 250=1.3%, 500=0.8%, 750=1.4%, 1000=0.3%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=10273
  read : io=0KiB, bw=0KiB/s, runt= 11443msec
  write: io=100MiB, bw=9,188KiB/s, runt= 11412msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.02
    clat (msec): min=    0, max=    3, avg= 0.19, stdev= 0.42
    bw (KiB/s) : min=    0, max=127287, per=328.35%, avg=63643.50, stdev=90005.50
  cpu          : usr=7.13%, sys=2.45%, ctx=4141
  IO depths    : 1=0.3%, 2=98.6%, 4=1.1%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=98.7%, 4=0.7%, 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%
fio: (groupid=0): err= 0: pid=10274
  read : io=100MiB, bw=5,590KiB/s, runt= 18758msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1222, avg=50.85, stdev=146.27
    bw (KiB/s) : min=   21, max=38338, per=142.27%, avg=8251.65, stdev=13555.80
  write: io=91,048KiB, bw=6,044KiB/s, runt= 15424msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  839, avg= 5.07, stdev=50.16
    bw (KiB/s) : min=    0, max=140451, per=166.62%, avg=32295.80, stdev=61074.73
  cpu          : usr=3.67%, sys=1.81%, ctx=6622
  IO depths    : 1=1.0%, 2=53.7%, 4=30.7%, 8=14.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.6%, 4=0.3%, 10=18.7%, 20=21.2%, 50=5.2%, 100=0.6%
     lat (msec): 250=1.9%, 500=1.7%, 750=1.1%, 1000=0.2%, >=2000=0.4%

Run status group 0 (all jobs):
   READ: io=104MiB, aggrb=5,800KiB/s, minb=0KiB/s, maxb=5,590KiB/s, mint=11443msec, maxt=18758msec
  WRITE: io=285MiB, aggrb=19,383KiB/s, minb=0KiB/s, maxb=9,188KiB/s, mint=11443msec, maxt=18758msec

Disk stats (read/write):
  sda: ios=1333/2155, merge=448/70657, ticks=32856/1947916, in_queue=1991384, util=97.75%
2.33user 0.88system 0:19.34elapsed 16%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2471minor)pagefaults 0swaps