Basically, it's my personal system (running 10.10) where I often switch from myself to my other myself (one login is for personal purposes, and the other one is the working login). So I come to situation that both myself are logged onto the system because I want to switch between accounts quickly.
Does anyone know how much memory has been consumed in such work? I haven't noticed any slowdowns, but I would like to know that. Is there any Ubuntu official document describing this?