Can we modify the way Metricbeat Claculates the System metric fighures

[sunilmchaudhari (Sunil Chaudhari)]

Hi,
I have configured MB on linux machine to read system metric.
However figures are different that the commands? When I say free -m on command line, t gives different figures than that of metricbeat.

How to validate output of metricbeat?
What are the commands internally it uses?
Can we modify those commands?

br,
Sunil Chaudhari.

[pierhugues (Pier-Hugues Pellerin)]

We are using a system call to retrieve this information.

I think we send the bytes values to elasticsearch, and in your case free -m returns the values in mebibytes

How different are the numbers it is just a scale difference?

[sunilmchaudhari (Sunil Chaudhari)]

Hi Pier,
Thanks for reply.

There is scale different problem as well as explained below.
There are multiple hosts i have configured. In Combine line graph it shows one system to some Y1 level. See image 1
And when I click on that hosts, it goes down to some lower level, which seems to be its original one. Why does it behave like this?
See the host with green color.

[sunilmchaudhari (Sunil Chaudhari)]

Hi,
About calculation difference, We need the figures as below for the memory:
How we calculate free memory, is (free memory) + (buffer/cacche memory)
How we calculate memory utilization is equal to List all the running services and add the total percentage usage of each service
via (pidstat -rl)

How can we modify metricbeat to align to above calculations output.

br,
Sunil.

[pierhugues (Pier-Hugues Pellerin)]

Are theses the default dashboard that we ship with metricbeat?

[sunilmchaudhari (Sunil Chaudhari)]

Yes. These are default dashboards and visualization too.