fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=libaio, iodepth=8
...
fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=libaio, iodepth=8
Starting 3 threads
Threads: 3
Threads: 3
Threads: 3: [mFm] [25.0% done] [  3222/ 15213 kb/s] [eta 00m:09s]
Threads: 3: [mFm] [25.0% done] [     0/     0 kb/s] [eta 00m:12s]
Threads: 3: [mFm] [25.0% done] [   658/     0 kb/s] [eta 00m:15s]
Threads: 3: [mFm] [25.0% done] [     0/     0 kb/s] [eta 00m:18s]
Threads: 3: [mFm] [25.0% done] [     0/     0 kb/s] [eta 00m:21s]
Threads: 3: [mFF] [25.8% done] [  1479/ 36311 kb/s] [eta 00m:23s]
Threads: 3: [mFF] [25.7% done] [     0/     0 kb/s] [eta 00m:26s]
Threads: 3: [mFF] [25.6% done] [     0/     0 kb/s] [eta 00m:29s]
Threads: 3: [mFF] [26.2% done] [   349/     0 kb/s] [eta 00m:31s]
Threads: 3: [mFF] [26.1% done] [     0/     0 kb/s] [eta 00m:34s]
Threads: 3: [mVV] [26.5% done] [ 13746/     0 kb/s] [eta 00m:36s]
Threads: 3: [mVV] [26.9% done] [ 30175/     0 kb/s] [eta 00m:38s]
Threads: 3: [mVV] [27.3% done] [ 23027/     0 kb/s] [eta 00m:40s]
Threads: 3: [mVV] [27.1% done] [ 31053/     0 kb/s] [eta 00m:43s]
Threads: 3: [mVV] [28.3% done] [ 35672/     0 kb/s] [eta 00m:43s]
Threads: 3: [mVV] [30.0% done] [ 30947/     0 kb/s] [eta 00m:42s]
Threads: 1: [m__] [48.7% done] [ 30118/ 31089 kb/s] [eta 00m:20s]
Threads: 1: [F__] [100.0% done] [  3551/ 26063 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__] [85.2% done] [ 27355/     0 kb/s] [eta 00m:04s]
Threads: 1: [V__] [100.0% done] [ 36628/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=26711
  read : io=100MiB, bw=4,224KiB/s, runt= 24823msec
    slat (msec): min=   19, max= 5064, avg=3313.58, stdev=1413.69
    clat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    bw (KiB/s) : min=   75, max=40824, per=83.11%, avg=10532.29, stdev=15463.09
  write: io=87,884KiB, bw=4,080KiB/s, runt= 22056msec
    slat (msec): min=    0, max=   34, avg= 2.63, stdev= 3.67
    clat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    bw (KiB/s) : min=    0, max=102912, per=214.70%, avg=27558.75, stdev=50290.13
  cpu          : usr=5.30%, sys=1.76%, ctx=1170
  IO depths    : 1=12.6%, 2=25.0%, 4=50.0%, 8=12.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=99.9%, 4=0.0%, 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=26712
  read : io=100MiB, bw=5,521KiB/s, runt= 18990msec
    slat (msec): min=   74, max=16728, avg=13018.46, stdev=3487.27
    clat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    bw (KiB/s) : min=    4, max=20415, per=96.90%, avg=12279.57, stdev=7099.87
  write: io=99,016KiB, bw=8,405KiB/s, runt= 12063msec
    slat (msec): min=    0, max=   76, avg= 2.68, stdev= 3.75
    clat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    bw (KiB/s) : min=    0, max=94732, per=311.84%, avg=40027.75, stdev=47737.74
  cpu          : usr=7.33%, sys=2.09%, ctx=880
  IO depths    : 1=12.6%, 2=25.0%, 4=50.0%, 8=12.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=99.9%, 4=0.0%, 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=26713
  read : io=100MiB, bw=5,548KiB/s, runt= 18900msec
    slat (msec): min=   61, max=11231, avg=7922.04, stdev=2737.89
    clat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    bw (KiB/s) : min=   47, max=20936, per=83.26%, avg=10550.29, stdev=6985.53
  write: io=89,588KiB, bw=7,599KiB/s, runt= 12072msec
    slat (msec): min=    0, max=    9, avg= 1.91, stdev= 1.89
    clat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    bw (KiB/s) : min=    0, max= 8771, per=34.17%, avg=4385.50, stdev=6202.03
  cpu          : usr=6.52%, sys=1.84%, ctx=1018
  IO depths    : 1=12.6%, 2=25.0%, 4=49.9%, 8=12.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=99.9%, 4=0.0%, 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=300MiB, aggrb=12,672KiB/s, minb=4,224KiB/s, maxb=5,548KiB/s, mint=18900msec, maxt=24823msec
  WRITE: io=270MiB, aggrb=12,836KiB/s, minb=4,080KiB/s, maxb=8,405KiB/s, mint=18900msec, maxt=24823msec

Disk stats (read/write):
  sda: ios=3711/2222, merge=1332/66831, ticks=71792/1540156, in_queue=1612496, util=97.01%
3.99user 1.25system 0:25.13elapsed 20%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2418minor)pagefaults 0swaps