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) (4 file(s) / 4096MiB)
stresser: Laying out IO file(s) (4 file(s) / 4096MiB)
stresser: Laying out IO file(s) (4 file(s) / 4096MiB)
stresser: Laying out IO file(s) (4 file(s) / 4096MiB)
stresser: Laying out IO file(s) (4 file(s) / 4096MiB)
stresser: Laying out IO file(s) (4 file(s) / 4096MiB)
stresser: Laying out IO file(s) (4 file(s) / 4096MiB)
stresser: Laying out IO file(s) (4 file(s) / 4096MiB)

stresser: (groupid=0, jobs=1): err= 0: pid=7246
  write: io=4,096MiB, bw=4,541KiB/s, iops=283, runt=923593msec
    clat (usec): min=14, max=2,547K, avg=3520.65, stdev=26674.58
    bw (KiB/s) : min=    0, max=20173, per=26.52%, avg=4802.31, stdev=4071.97
  cpu          : usr=0.37%, sys=0.49%, ctx=11809, majf=0, minf=1048784
  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=70.77%, 50=22.54%, 100=0.23%, 250=2.01%, 500=0.04%
     lat (usec): 750=0.01%, 1000=0.01%
     lat (msec): 2=0.13%, 4=0.14%, 10=0.64%, 20=0.56%, 50=1.03%
     lat (msec): 100=0.74%, 250=0.80%, 500=0.34%, 750=0.01%, 1000=0.01%
     lat (msec): 2000=0.01%, >=2000=0.01%
stresser: (groupid=0, jobs=1): err= 0: pid=7247
  write: io=4,096MiB, bw=4,584KiB/s, iops=286, runt=914947msec
    clat (usec): min=14, max=1,364K, avg=3487.31, stdev=25161.87
    bw (KiB/s) : min=    0, max=20326, per=26.68%, avg=4831.36, stdev=4078.03
  cpu          : usr=0.38%, sys=0.50%, ctx=12661, majf=1, minf=1048782
  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=68.03%, 50=25.25%, 100=0.20%, 250=1.74%, 500=0.04%
     lat (usec): 750=0.01%, 1000=0.01%
     lat (msec): 2=0.16%, 4=0.16%, 10=0.75%, 20=0.62%, 50=1.12%
     lat (msec): 100=0.74%, 250=0.85%, 500=0.31%, 750=0.01%, 2000=0.01%
stresser: (groupid=0, jobs=1): err= 0: pid=7248
  write: io=4,096MiB, bw=4,548KiB/s, iops=284, runt=922203msec
    clat (usec): min=14, max=634K, avg=3515.41, stdev=25300.59
    bw (KiB/s) : min=    0, max=19976, per=26.38%, avg=4776.32, stdev=3992.59
  cpu          : usr=0.39%, sys=0.48%, ctx=12762, majf=0, minf=1048970
  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=69.90%, 50=23.39%, 100=0.21%, 250=1.69%, 500=0.04%
     lat (usec): 750=0.01%, 1000=0.01%
     lat (msec): 2=0.17%, 4=0.17%, 10=0.73%, 20=0.66%, 50=1.10%
     lat (msec): 100=0.75%, 250=0.87%, 500=0.30%, 750=0.01%
stresser: (groupid=0, jobs=1): err= 0: pid=7249
  write: io=4,096MiB, bw=4,527KiB/s, iops=282, runt=926453msec
    clat (usec): min=13, max=675K, avg=3531.42, stdev=26074.83
    bw (KiB/s) : min=    0, max=57344, per=26.42%, avg=4783.50, stdev=4295.36
  cpu          : usr=0.38%, sys=0.48%, ctx=12703, majf=0, minf=1048786
  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=74.28%, 50=19.01%, 100=0.20%, 250=1.70%, 500=0.06%
     lat (usec): 750=0.01%, 1000=0.01%
     lat (msec): 2=0.18%, 4=0.17%, 10=0.75%, 20=0.65%, 50=1.13%
     lat (msec): 100=0.69%, 250=0.79%, 500=0.35%, 750=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=8414
  read : io=16KiB, bw=17KiB/s, iops=1, runt=   917msec
    clat (usec): min=917K, max=917K, avg=916807.00, stdev= 0.00
    bw (KiB/s) : min=   17, max=   17, per=24.64%, avg=17.00, 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): 1000=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=8415
  read : io=16KiB, bw=17KiB/s, iops=1, runt=   895msec
    clat (usec): min=894K, max=894K, avg=894389.00, stdev= 0.00
    bw (KiB/s) : min=   17, max=   17, per=24.64%, avg=17.00, 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): 1000=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=8416
  read : io=16KiB, bw=18KiB/s, iops=1, runt=   866msec
    clat (usec): min=15,466, max=15,466, avg=15466.00, stdev= 0.00
    bw (KiB/s) : min=   18, max=   18, per=26.09%, avg=18.00, stdev= 0.00
  write: io=32KiB, bw=36KiB/s, iops=2, runt=   866msec
    clat (msec): min=309, max=539, avg=424.78, stdev=162.83
    bw (KiB/s) : min=    0, max=    0, per=0.00%, avg= 0.00, stdev= 0.00
  cpu          : usr=0.00%, sys=0.00%, ctx=12, majf=0, minf=68
  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): 20=33.33%, 500=33.33%, 750=33.33%
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=8417
  read : io=16KiB, bw=18KiB/s, iops=1, runt=   844msec
    clat (usec): min=843K, max=843K, avg=842887.00, stdev= 0.00
    bw (KiB/s) : min=   19, max=   19, per=27.54%, avg=19.00, 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): 1000=100.00%

Run status group 0 (all jobs):
  WRITE: io=16,384MiB, aggrb=18,109KiB/s, minb=4,527KiB/s, maxb=4,584KiB/s, mint=914947msec, maxt=926453msec

Run status group 1 (all jobs):
   READ: io=64KiB, aggrb=69KiB/s, minb=17KiB/s, maxb=18KiB/s, mint=844msec, maxt=917msec
  WRITE: io=32KiB, aggrb=36KiB/s, minb=36KiB/s, maxb=36KiB/s, mint=866msec, maxt=866msec

Disk stats (read/write):
  sda: ios=70002/196182, merge=0/11354162, ticks=14974521/154316411, in_queue=169290867, util=95.36%
Command exited with non-zero status 4
14.34user 153.22system 29:11.88elapsed 9%CPU (0avgtext+0avgdata 0maxresident)k
33555744inputs+100669304outputs (31major+4202016minor)pagefaults 0swaps