Memory saturation

Hello to you. I have a VitalPbx in version 3.2.4-3 installed on a 16 GB msata.

It works fine , except : /dev/mapper/centos-root is at 98%.

image

I think all the traces are kept in memory. How to erase them.

Thank you

Install ncdu
You will see what uses the most space.
You can delete with it, too.

Thank you for the answer . I’ll try, but how do I recognize an important file from another that can be deleted?

Just share a screenshot of the largest files (ncdu).
Somebody might be able to help here.

thanks for the advice