Multiple page replacement algorithms can be used in any cache including an operating system cache for caching pages accessed via buffered I/O, as well as a cache for caching pages accessed via unbuffered I/O such as accesses to virtual disks made by virtual machines.N·P·科斯特斯A·达马托V·R·尚卡尔
Algorithm for FIFO Page Replacement Step 1. Start to traverse the pages. Step 2. f the memory holds fewer pages then the capacity go to Step 3, else go to Step 5. Step 3. Push pages in the queue one at a time until the queue reaches its maximum capacity or all page requests are ...
Therefore, we have to design a new page replacement algorithm that can not only maintain a high hit ratio as traditional algorithms do but also can avoid frequent writes to PCM. In this paper, aiming to provide a new solution to the page replacement problem in PCM/DRAM-based hybrid ...
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This is known as least recently used, or LRU, page replacement . The second-chance algorithm is one approach to implementing an LRU page-replacement scheme. ... Get Mastering Algorithms with C now with the O’Reilly learning platform. O’Reilly members experience books, live events, courses ...
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Some advanced cache replacement algorithms [16], [19] define their own custom cost indexes to enhance cache hit rates and reduce expenses associated with fetching objects from origin servers. GD-size (greedy-dual size) considers both the size and fetching cost of an object, while SW-LFU (serv...
There is clearly a myriad of possibilities, from special DRAM designs that include a hardware tag feature to software algorithms that make several memory references to look up one datum. Traditional virtual memory has the tags array implemented in software, and this software structure often holds mo...
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[16]. There are many types of replacement strategies, but we would like to use one that best predicts a page[17]which won’t be used again for the longest amount of time. This type of prediction is known asleast recently used (orLRU[18]for short). The idea is that any page that ...