I have 4GB RAM on my computer and I could see using this command:
ps aux --sort=-%mem | awk 'NR<=10{print $0}'
that this process consumes a lot of memory and cpu:
/usr/lib/firefox/plugin-container -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appdir /usr/lib/firefox/browser 463 tab
And, in the second place, follows firefox
process.
I do not know if I can do something to avoid or reduce the RAM's consumption. I appreciate your help. Thanks!