Virtual memory compression: Difference between revisions

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===Low compression ratios===
<!-- NB. I would not consider these ratios to be "low", they are perfectly in line with what can be expected for binary code in general. -->
One of the primary issues is the degree to which the contents of physical memory can be compressed under real-world loads. Program code and much of the data held in physical memory is often not highly compressible, since efficient programming techniques and data architectures are designed to automatically eliminate redundancy in data sets. Various studies show typical [[data compression ratio]]s ranging from 2:1 to 2.5:1 for program data.,<ref name="SIMPSON"/><ref name="RIZZO"/> similar to typically achieval compression ratios with [[disk compression]].<!-- no surprise, but additional support of the numbers -->
 
===Background I/O===