root@fio:~# fio --randrepeat=1 --ioengine=libaio --direct=1 --name=testingtons --filename=4GBtestfile --bssplit=512/10:4k/60:8k/20:64k/10 --iodepth=64 --size=5G --readwrite=randrw --rwmixread=75
testingtons: (g=0): rw=randrw, bs=512-64K/512-64K/512-64K, ioengine=libaio, iodepth=64
fio-2.2.10
Starting 1 process
Jobs: 1 (f=1): [m(1)] [99.7% done] [24666KB/7781KB/0KB /s] [6074/2023/0 iops] [eta 00m:01s]
testingtons: (groupid=0, jobs=1): err= 0: pid=1256: Tue Jun 21 16:38:57 2016
read : io=3840.5MB, bw=12145KB/s, iops=2116, runt=323802msec
slat (usec): min=2, max=139877, avg= 8.45, stdev=285.86
clat (usec): min=195, max=893745, avg=21346.85, stdev=38466.39
lat (usec): min=209, max=893749, avg=21355.49, stdev=38467.33
clat percentiles (usec):
| 1.00th=[ 1112], 5.00th=[ 2416], 10.00th=[ 3504], 20.00th=[ 5728],
| 30.00th=[ 8256], 40.00th=[10688], 50.00th=[13120], 60.00th=[15936],
| 70.00th=[19584], 80.00th=[24960], 90.00th=[38656], 95.00th=[70144],
| 99.00th=[144384], 99.50th=[175104], 99.90th=[659456], 99.95th=[675840],
| 99.99th=[716800]
bw (KB /s): min= 359, max=53377, per=100.00%, avg=12448.29, stdev=7363.89
write: io=1279.6MB, bw=4046.6KB/s, iops=705, runt=323802msec
slat (usec): min=3, max=136776, avg=13.41, stdev=521.88
clat (usec): min=660, max=829487, avg=26601.71, stdev=43170.32
lat (usec): min=808, max=829491, avg=26615.32, stdev=43171.97
clat percentiles (msec):
| 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 6], 20.00th=[ 10],
| 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 22],
| 70.00th=[ 25], 80.00th=[ 31], 90.00th=[ 46], 95.00th=[ 78],
| 99.00th=[ 159], 99.50th=[ 208], 99.90th=[ 676], 99.95th=[ 693],
| 99.99th=[ 742]
bw (KB /s): min= 58, max=17804, per=100.00%, avg=4149.12, stdev=2473.54
lat (usec) : 250=0.01%, 500=0.02%, 750=0.13%, 1000=0.40%
lat (msec) : 2=2.08%, 4=7.99%, 10=22.53%, 20=34.29%, 50=24.95%
lat (msec) : 100=4.45%, 250=2.87%, 500=0.07%, 750=0.21%, 1000=0.01%
cpu : usr=1.14%, sys=3.57%, ctx=301780, majf=0, minf=11
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=0.1%, >=64=100.0%
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=0.1%, >=64=0.0%
issued : total=r=685481/w=228538/d=0, short=r=0/w=0/d=0, drop=r=0/w=0/d=0
latency : target=0, window=0, percentile=100.00%, depth=64
Run status group 0 (all jobs):
READ: io=3840.5MB, aggrb=12145KB/s, minb=12145KB/s, maxb=12145KB/s, mint=323802msec, maxt=323802msec
WRITE: io=1279.6MB, aggrb=4046KB/s, minb=4046KB/s, maxb=4046KB/s, mint=323802msec, maxt=323802msec
Disk stats (read/write):
dm-0: ios=684749/228546, merge=0/0, ticks=14562900/6066296, in_queue=20629684, util=100.00%, aggrios=679894/227992, aggrmerge=5590/763, aggrticks=14518532/6057000, aggrin_queue=20576316, aggrutil=100.00%
sda: ios=679894/227992, merge=5590/763, ticks=14518532/6057000, in_queue=20576316, util=100.00%
root@fio:~#