Comment Re:I always had the impression (Score 1) 179
I'm responding to this because earlier posts from you have seemed to be on the level.
Firefox stores the history of each tab in RAM. So if you reopen a tab with ctrl-alt-T (presumably, it's command-alt-T in Mac OS) then to maintain this behaviour the tab has to reopen with its history intact. Because that history is stored in RAM, this means that merely closing a Firefox tab does little to minimise its memory usage. There's an about::config flag to alter this behaviour, but I don't know it offhand.
Firefox stores the history of each tab in RAM. So if you reopen a tab with ctrl-alt-T (presumably, it's command-alt-T in Mac OS) then to maintain this behaviour the tab has to reopen with its history intact. Because that history is stored in RAM, this means that merely closing a Firefox tab does little to minimise its memory usage. There's an about::config flag to alter this behaviour, but I don't know it offhand.