Transparent sharing of memory pages using content comparison

摘要: A computer system has one or more software contexts that share use of a memory is divided into units such as pages. In the preferred embodiment invention, are, include, virtual machines running on common hardware platform. The contents, opposed to merely addresses page numbers, pages are accessible examined. If two context identical, then their mappings changed point single, shared copy in memory, thereby freeing space taken up by redundant copies. preferably marked copy-on-write. Sharing dynamic, whereby presence copies determined hashing contents and performing full content comparisons only when hash same key.