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