Page Cache
978-613-2-11151-7
6132111514
124
2010-07-18
39.00 €
eng
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In computing, page cache, sometimes ambiguously called disk cache, is a "transparent" buffer of disk-backed pages kept in main memory (RAM) by the operating system for quicker access. Page cache is typically implemented in kernels with the paging memory management, and is completely transparent to applications. All memory that is not directly allocated to applications is usually utilized for page cache. Hard disk read speeds are low and random accesses require expensive disk seeks compared to main memory—this is why RAM upgrades usually yield significant improvements in computers' speed and responsiveness.
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Informatics
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