My RAM has a lot of duplicate data in. This seems counter to good design practices which should keep just one copy of big chunks of identical data. That's a qu

My RAM has a lot of duplicate data in. This seems counter to good design practices which should keep just one copy of big chunks of identical data. That's a question of trading space for time. Sure, we could look at each page of cache RAM and work out the best way to use all of it very efficiently in terms of space, but what is the rest of your system doing while you're doing all that? Just wasting time, twiddling its thumbs, asking "Are we there yet?"