stresser: (g=0): rw=write, bs=16K-16K/16K-16K, ioengine=mmap, iodepth=1
...
stresser: (g=0): rw=write, bs=16K-16K/16K-16K, ioengine=mmap, iodepth=1
fio: mixed read/write workload with verify. May not work as expected, unless you pre-populated the file
stresser: (g=1): rw=randrw, bs=16K-16K/16K-16K, ioengine=mmap, iodepth=4
fio: mixed read/write workload with verify. May not work as expected, unless you pre-populated the file
fio: mixed read/write workload with verify. May not work as expected, unless you pre-populated the file
...
fio: mixed read/write workload with verify. May not work as expected, unless you pre-populated the file
stresser: (g=1): rw=randrw, bs=16K-16K/16K-16K, ioengine=mmap, iodepth=4
Starting 8 processes
Bad verify header 0
Bad verify header 0
Bad verify header 0
Bad verify header 0
stresser: Laying out IO file(s) (1 file(s) / 4096MiB)
stresser: Laying out IO file(s) (1 file(s) / 4096MiB)
stresser: Laying out IO file(s) (1 file(s) / 4096MiB)
stresser: Laying out IO file(s) (1 file(s) / 4096MiB)
stresser: Laying out IO file(s) (1 file(s) / 4096MiB)
stresser: Laying out IO file(s) (1 file(s) / 4096MiB)
stresser: Laying out IO file(s) (1 file(s) / 4096MiB)
stresser: Laying out IO file(s) (1 file(s) / 4096MiB)

stresser: (groupid=0, jobs=1): err= 0: pid=7252
  write: io=4,096MiB, bw=5,816KiB/s, iops=363, runt=721158msec
    clat (usec): min=14, max=1,312K, avg=2748.05, stdev=24293.52
    bw (KiB/s) : min=    0, max=24046, per=28.49%, avg=6573.26, stdev=7283.77
  cpu          : usr=0.51%, sys=0.58%, ctx=17590, majf=0, minf=1048743
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued r/w: total=0/262144, short=0/0
     lat (usec): 20=62.86%, 50=30.39%, 100=0.05%, 250=0.06%, 500=0.01%
     lat (usec): 750=0.01%, 1000=0.02%
     lat (msec): 2=0.04%, 4=0.23%, 10=1.52%, 20=3.01%, 50=0.78%
     lat (msec): 100=0.40%, 250=0.29%, 500=0.29%, 750=0.03%, 1000=0.01%
     lat (msec): 2000=0.01%
stresser: (groupid=0, jobs=1): err= 0: pid=7253
  write: io=4,096MiB, bw=5,886KiB/s, iops=367, runt=712495msec
    clat (usec): min=14, max=1,291K, avg=2715.47, stdev=23609.67
    bw (KiB/s) : min=    0, max=23825, per=28.73%, avg=6629.56, stdev=7254.12
  cpu          : usr=0.51%, sys=0.57%, ctx=17612, majf=0, minf=1048741
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued r/w: total=0/262144, short=0/0
     lat (usec): 20=70.15%, 50=23.10%, 100=0.06%, 250=0.05%, 500=0.01%
     lat (usec): 750=0.01%, 1000=0.01%
     lat (msec): 2=0.05%, 4=0.21%, 10=1.48%, 20=3.05%, 50=0.79%
     lat (msec): 100=0.42%, 250=0.31%, 500=0.27%, 750=0.03%, 1000=0.01%
     lat (msec): 2000=0.01%
stresser: (groupid=0, jobs=1): err= 0: pid=7254
  write: io=4,096MiB, bw=5,958KiB/s, iops=372, runt=703909msec
    clat (usec): min=14, max=1,326K, avg=2682.63, stdev=23492.91
    bw (KiB/s) : min=    0, max=26112, per=29.04%, avg=6699.40, stdev=7291.22
  cpu          : usr=0.52%, sys=0.58%, ctx=17590, majf=1, minf=1048738
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued r/w: total=0/262144, short=0/0
     lat (usec): 20=63.42%, 50=29.83%, 100=0.06%, 250=0.06%, 500=0.01%
     lat (usec): 750=0.01%, 1000=0.02%
     lat (msec): 2=0.05%, 4=0.23%, 10=1.49%, 20=3.03%, 50=0.79%
     lat (msec): 100=0.42%, 250=0.30%, 500=0.27%, 750=0.02%, 1000=0.01%
     lat (msec): 2000=0.01%
stresser: (groupid=0, jobs=1): err= 0: pid=7255
  write: io=4,096MiB, bw=5,768KiB/s, iops=360, runt=727115msec
    clat (usec): min=13, max=1,409K, avg=2771.27, stdev=25302.30
    bw (KiB/s) : min=    0, max=59699, per=28.56%, avg=6590.35, stdev=7606.01
  cpu          : usr=0.50%, sys=0.56%, ctx=17597, majf=0, minf=1048744
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued r/w: total=0/262144, short=0/0
     lat (usec): 20=74.49%, 50=18.78%, 100=0.05%, 250=0.05%, 500=0.01%
     lat (usec): 750=0.01%, 1000=0.02%
     lat (msec): 2=0.04%, 4=0.28%, 10=1.47%, 20=3.07%, 50=0.75%
     lat (msec): 100=0.40%, 250=0.26%, 500=0.28%, 750=0.04%, 1000=0.01%
     lat (msec): 2000=0.01%
stresser: (groupid=1, jobs=1): err=84 (file:io_u.c:986, func=io_u_sync_complete, error=Invalid or incomplete multibyte or wide character): pid=8245
  read : io=16KiB, bw=58KiB/s, iops=3, runt=   272msec
    clat (usec): min=272K, max=272K, avg=271638.00, stdev= 0.00
  cpu          : usr=0.00%, sys=0.00%, ctx=4, majf=0, minf=56
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=50.0%, 4=50.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued r/w: total=1/0, short=0/0

     lat (msec): 500=100.00%
stresser: (groupid=1, jobs=1): err=84 (file:io_u.c:986, func=io_u_sync_complete, error=Invalid or incomplete multibyte or wide character): pid=8246
  read : io=16KiB, bw=63KiB/s, iops=3, runt=   252msec
    clat (usec): min=3,471, max=3,471, avg=3471.00, stdev= 0.00
  write: io=32KiB, bw=126KiB/s, iops=7, runt=   252msec
    clat (msec): min=107, max=139, avg=123.68, stdev=22.89
    bw (KiB/s) : min=    0, max=    0, per=0.00%, avg= 0.00, stdev= 0.00
  cpu          : usr=0.00%, sys=0.40%, ctx=12, majf=0, minf=66
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=25.0%, 4=75.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued r/w: total=1/2, short=0/0

     lat (msec): 4=33.33%, 250=66.67%
stresser: (groupid=1, jobs=1): err=84 (file:io_u.c:986, func=io_u_sync_complete, error=Invalid or incomplete multibyte or wide character): pid=8247
  read : io=16KiB, bw=94KiB/s, iops=5, runt=   170msec
    clat (usec): min=169K, max=169K, avg=169165.00, stdev= 0.00
  cpu          : usr=0.00%, sys=0.00%, ctx=4, majf=0, minf=56
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=50.0%, 4=50.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued r/w: total=1/0, short=0/0

     lat (msec): 250=100.00%
stresser: (groupid=1, jobs=1): err=84 (file:io_u.c:986, func=io_u_sync_complete, error=Invalid or incomplete multibyte or wide character): pid=8248
  read : io=16KiB, bw=125KiB/s, iops=7, runt=   128msec
    clat (usec): min=127K, max=127K, avg=126820.00, stdev= 0.00
  cpu          : usr=0.00%, sys=0.00%, ctx=5, majf=0, minf=56
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=50.0%, 4=50.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued r/w: total=1/0, short=0/0

     lat (msec): 250=100.00%

Run status group 0 (all jobs):
  WRITE: io=16,384MiB, aggrb=23,073KiB/s, minb=5,768KiB/s, maxb=5,958KiB/s, mint=703909msec, maxt=727115msec

Run status group 1 (all jobs):
   READ: io=64KiB, aggrb=235KiB/s, minb=58KiB/s, maxb=125KiB/s, mint=128msec, maxt=272msec
  WRITE: io=32KiB, aggrb=127KiB/s, minb=127KiB/s, maxb=127KiB/s, mint=252msec, maxt=252msec

Disk stats (read/write):
  sda: ios=69941/195754, merge=0/11355593, ticks=3138866/110035005, in_queue=113173786, util=98.09%
Command exited with non-zero status 4
15.07user 147.89system 25:35.80elapsed 10%CPU (0avgtext+0avgdata 0maxresident)k
33555744inputs+100667272outputs (32major+4201030minor)pagefaults 0swaps