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Cache replacement policies information


In computing, cache replacement policies (also known as cache replacement algorithms or cache algorithms) are optimizing instructions or algorithms which a computer program or hardware-maintained structure can utilize to manage a cache of information. Caching improves performance by keeping recent or often-used data items in memory locations which are faster, or computationally cheaper to access, than normal memory stores. When the cache is full, the algorithm must choose which items to discard to make room for new data.

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Cache replacement policies

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In computing, cache replacement policies (also known as cache replacement algorithms or cache algorithms) are optimizing instructions or algorithms which...

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Cache placement policies

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Cache placement policies are policies that determine where a particular memory block can be placed when it goes into a CPU cache. A block of memory cannot...

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Adaptive replacement cache

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Adaptive Replacement Cache (ARC) is a page replacement algorithm with better performance than LRU (least recently used). This is accomplished by keeping...

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Page replacement algorithm

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balancing". LWN.net. Wong, Kin-Yeung (23 January 2006). "Web cache replacement policies: a pragmatic approach". IEEE Network. 20 (1). IEEE: 28–34. doi:10...

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Cache inclusion policy

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higher level cache are also present in the lower level cache, then the lower level cache is said to be inclusive of the higher level cache. If the lower...

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CPU cache

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evict is called the replacement policy. The fundamental problem with any replacement policy is that it must predict which existing cache entry is least likely...

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Cache hierarchy

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original (PDF) on 2016-10-19. Akanksha Jain; Calvin Lin; 2019. Cache Replacement Policies. Morgan & Claypool Publishers. p. 45. ISBN 978-1-68173-577-1....

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Least frequently used

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there are hybrids that utilize LFU concepts. Cache replacement policies Memory paging Page replacement algorithm § Not frequently used Donghee Lee; Jongmoo...

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Translation lookaside buffer

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A translation lookaside buffer (TLB) is a memory cache that stores the recent translations of virtual memory to physical memory. It is used to reduce...

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Software Guard Extensions

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using certain CPU instructions in lieu of a fine-grained timer to exploit cache DRAM side-channels. One countermeasure for this type of attack was presented...

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Algorithmic efficiency

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virtual memory. Because of this, cache replacement policies are extremely important to high-performance computing, as are cache-aware programming and data alignment...

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Row hammer

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Although the cache replacement policies differ between processors, this approach overcomes the architectural differences by employing an adaptive cache eviction...

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Arithmetic logic unit

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Heterogeneous architecture Components Core Cache CPU cache Scratchpad memory Data cache Instruction cache replacement policies coherence Bus Clock rate Clock signal...

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Computer performance

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update rate Complete instruction set Hardware acceleration Speedup Cache replacement policies Understanding Your PC Hardware Relative efficiency Computer Performance...

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Virtual memory

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same area of storage. Processor design Page (computer memory) Cache replacement policies Memory management Memory management (operating systems) Protected...

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LIRS caching algorithm

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for balancing cache and program memory in Linux. A report on the implementation of the CLOCK-Pro page replacement. Advanced Page Replacement Projects established...

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Subtractor

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Heterogeneous architecture Components Core Cache CPU cache Scratchpad memory Data cache Instruction cache replacement policies coherence Bus Clock rate Clock signal...

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Cache performance measurement and metric

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various parameters like cache size, associativity, replacement policy, etc. Cache performance depends on cache hits and cache misses, which are the factors...

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Trusted Execution Technology

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verifies that the platform meets the requirements of the Launch Control Policy (LCP) set by the platform owner. LCP consists of three parts: Verifying...

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Value cache encoding

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is used as replacement policy in both caches. It is implemented using reference bit and a n-bit time stamp for each value stored in cache. When a value...

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Glossary of computer hardware terms

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within a cache to make room for new cache entries to be allocated; controlled by a cache replacement policy. Caused by a cache miss whilst a cache is already...

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