I have a problem with my 2012 MacBook air (4gb RAM) and I was wondering if someone could help me out. Basically, iStatNano is telling me that I have minimal 'free' RAM, less than 100mb usually, but it also says I have 1gb of 'inactive' RAM. This is when I've only got a couple of windows of Safari open. The laptop does struggle when I have lots of programs open.
My question is, how do I get the laptop to use this so called 'inactive RAM'? and why is my 'free' ram so low?