[Lava-users] IOZone test to measure performance of DUT

Hi All,

We use IOZone test to measure performance of our DUT Same command executed several time in a Lava session provide a diversity of results

iozone -az -i0 -i1 -I -e -s 100M -r 4k -r 16k -r 512k -r 1024k -r 16384k -f /mnt_emmc//tmp/iozone.tmp

Example1: kB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread 102400 4 5053 4420 12471 12137 102400 16 5070 5218 22101 22207 102400 512 11733 12630 40799 40862 102400 1024 11446 11494 39982 39976 102400 16384 13839 14235 42093 42094

Example 2: kB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread 102400 4 5088 5006 13496 13095 102400 16 5395 5549 17199 17220 102400 512 9203 10038 27819 27586 102400 1024 9382 8482 32514 32430 102400 16384 13569 13986 41992 42081

When same command is executed without LAVA with same DUT, results are more homogeneous (similar to exemple1) and permit to define clear targets

How to reduce interaction from Lava to measure performance of DUT ? Is it possible to disable some checks / interactions with DUT during execution of each test (around 3 / 4 minutes) ?

Thanks in advance for your answer Florence Rouger-Jung