Hot/Cold Based Replacement Algorithm for Flash Memory Buffer Management
نویسندگان
چکیده
منابع مشابه
CFDC: A Flash-Aware Buffer Management Algorithm for Database Systems
Classical buffer replacement policies, e.g., LRU, are suboptimal for database systems having flash disks for persistence, because they are not aware of the distinguished characteristics of those storage devices. We present CFDC (Clean-First Dirty-Clustered), a flash-aware buffer management algorithm, which emphasizes that clean buffer pages are first considered for replacement and that modified...
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Flash memory has characteristics of out-of-place update and asymmetric I/O latencies for read, write, and erase operations. Thus, the buffering policy for flash-based databases has to consider those properties to improve the overall performance. This article introduces a new approach to buffer management for flash-based databases, called AD-LRU (Adaptive Double LRU), which focuses on improving ...
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Classical buffer replacement policies, e. g., LRU, are suboptimal for database systems having flash disks for persistence, because they are not aware of the distinguished characteristics of flash-based storage devices. We introduce the basic principles of buffer management for such devices and present two efficient buffer algorithms that apply these principles. These algorithms significantly im...
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Recently DRAM and PRAM hybrid main memory organization has been studied in order to address the high levels of energy dissipation in DRAM based main memory. It is expected that this new memory architecture will be used soon in mobile computers which use NAND Flash memory based storages. In such computers, legacy operating system functionalities like file system and memory system should be modif...
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Due to the limitations of flash memory, such as asymmetric I/O latencies and not-inplace update, two kinds of buffer replacement algorithms exist, namely page-clustered policy and group-clustered policy. The former organizes pages in the page-level, which makes it easy to deal with hot pages, but shows a bad performance when the buffer size is big enough. The latter organizes pages in the group...
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ژورنال
عنوان ژورنال: Journal of Engineering and Applied Sciences
سال: 2019
ISSN: 1816-949X
DOI: 10.36478/jeasci.2019.5072.5077