I don't need every application to be the leanest that it can be. What I need is for every application stop assuming that 12 GB of free memory means that it's th

I don't need every application to be the leanest that it can be. What I need is for every application stop assuming that 12 GB of free memory means that it's their 12 GB. I understand the adage of free memory being wasted memory, but there's a context for that adage. E.g. if a user clicks off of a tab, the browser doesn't need to write that tab's contents to disk when 12 GB is free. A good trade off is to store the tab in memory, for X minutes. Write the tab (or more simply, the URL) to disk after those X minutes have elapsed.