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
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28035, got signal=6
Threads: 2
Threads: 2: [_Fm] [23.1% done] [   692/     0 kb/s] [eta 00m:10s]
Threads: 2: [_Fm] [23.5% done] [  2316/     0 kb/s] [eta 00m:13s]
Threads: 2: [_Fm] [25.0% done] [  1764/     0 kb/s] [eta 00m:15s]
Threads: 2: [_Fm] [26.1% done] [  1008/     0 kb/s] [eta 00m:17s]
Threads: 2: [_Vm] [28.0% done] [  8672/  1196 kb/s] [eta 00m:18s]
Threads: 2: [_Vm] [28.6% done] [ 26437/   440 kb/s] [eta 00m:20s]
Threads: 2: [_Vm] [29.0% done] [ 21508/     0 kb/s] [eta 00m:22s]
Threads: 2: [_Vm] [40.0% done] [ 24788/ 13852 kb/s] [eta 00m:15s]
Threads: 2: [_VF] [100.0% done] [ 11248/ 42932 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [ 15268/     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] [79.2% done] [ 18428/     0 kb/s] [eta 00m:05s]
Threads: 1: [__V] [100.0% done] [ 34604/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [100.0% done] [ 32628/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=28035
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=94.7%, 4=5.1%, 8=0.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=84.2%, 4=8.0%, 10=7.6%, 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=28036
  read : io=100MiB, bw=8,518KiB/s, runt= 12309msec
    clat (msec): min=    0, max=  325, avg=26.53, stdev=38.70
    bw (KiB/s) : min=    4, max=24949, per=175.05%, avg=16976.50, stdev=8591.54
  write: io=100MiB, bw=16,144KiB/s, runt=  6495msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=    6, avg= 0.25, stdev= 0.64
    bw (KiB/s) : min=    0, max=126615, per=394.41%, avg=63307.50, stdev=89530.33
  cpu          : usr=6.86%, sys=3.48%, ctx=4268
  IO depths    : 1=0.8%, 2=55.0%, 4=31.6%, 8=12.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=50.6%, 4=1.0%, 10=15.2%, 20=16.6%, 50=9.9%, 100=4.0%
     lat (msec): 250=2.2%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28037
  read : io=100MiB, bw=4,849KiB/s, runt= 21624msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1001, avg=58.59, stdev=150.37
    bw (KiB/s) : min=   26, max=35466, per=74.58%, avg=7232.36, stdev=12332.26
  write: io=87,176KiB, bw=4,793KiB/s, runt= 18623msec
    slat (msec): min=    0, max=    2, avg= 0.00, stdev= 0.05
    clat (msec): min=    0, max=  679, avg= 5.83, stdev=48.24
    bw (KiB/s) : min=    0, max=58135, per=74.01%, avg=11879.40, stdev=25861.45
  cpu          : usr=4.40%, sys=1.61%, ctx=4986
  IO depths    : 1=0.9%, 2=50.1%, 4=33.2%, 8=15.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=40.3%, 4=3.4%, 10=20.0%, 20=22.1%, 50=7.2%, 100=1.1%
     lat (msec): 250=1.0%, 500=2.5%, 750=1.6%, 1000=0.6%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=200MiB, aggrb=9,698KiB/s, minb=0KiB/s, maxb=8,518KiB/s, mint=12309msec, maxt=21624msec
  WRITE: io=285MiB, aggrb=16,051KiB/s, minb=0KiB/s, maxb=16,144KiB/s, mint=12309msec, maxt=21624msec

Disk stats (read/write):
  sda: ios=2279/2509, merge=1117/70306, ticks=53008/2500552, in_queue=2564676, util=96.29%
2.94user 0.99system 0:21.98elapsed 17%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2492minor)pagefaults 0swaps