Fast boot
摘要
說明書
In one embodiment, a dormant page, when converted, is converted into a primary copy, or into an exclusive copy that is in only one location in the system. After a period of time, the exclusive copy may be replicated, resulting in the exclusive copy becoming a primary copy, and a number of secondaries to be created throughout the system. This may occur, for example, when a zero is written into a page (even if not all of the page is written to zeroes). The page is turned from dormant into a real page, as it is often likely that the page will not be overwritten with all zeroes. However, as described above, there are cases in which an entire page is overwritten with zeroes.
As described above, pages with contents that are read-only may be replicated. In one embodiment, the page replication mechanism described herein is extended to replicating dormant pages, which have no contents, allowing, for example, primary dormant copies and secondary dormant copies, since a zero-page is read-only.
