1. A method comprising: capturing statistics for a plurality of elements of a partitioned linear address space wherein each addressable location is an element in the address space; rating subspaces of the partitioned linear address space based on captured statistics of at least one element; differentiating the subspaces based on frequency of access and designating each of the subspaces as being at least one of a lesser significance and a greater significance based on the frequency of access; and altering boundaries that separate the subspaces so as to effect coarser granularity in the subspaces determined to have the lesser significance and finer granularity in the subspaces determined to have the greater significance.