I wonder how much of the base data structures that are always in memory are pointers, and if it'd be more fair to say it's really the equivalent of 3 mb virtual

I wonder how much of the base data structures that are always in memory are pointers, and if it'd be more fair to say it's really the equivalent of 3 mb virtual/1.5 mb resident (or even 1.5/.75 for 16 bit!)