App. Res. of Comp. Accepted Paper
Vol. 41, 2024 No. 10

Tree-based in-memory index query optimization based on path prefetching

Lai Yirui
Li Yongkun
Xu Yinlong
University of Science & Technology of China, School of Computer Science & Technology, Hefei 230027, China
DOI: 10.19734/j.issn.1001-3695.2024.02.0051

Abstract

In the process of researching tree-based in-memory indexes, we find that traditional on-chip prefetching cannot adapt to the locality of index accesses, resulting in memory accesses becoming a performance bottleneck of this type of memory index. This paper proposes a path prefetching scheme at the software level to accelerate memory index accesses by prefetching, and enables the algorithm to be quickly deployed on real machines. Based on the analysis of the tree-based indexes memory access process, this algorithm uses a prefetch table to save the relationship between keys and index access paths, and matches data in the prefetch table through a matching algorithm based on key slice hashing. The algorithm has been implemented and evaluated on current advanced tree-based memory indexes, and the results indicate that it maintains stable performance improvement under different data scale and read-write-mixed workloads. Therefore, this article believes that the algorithm based on path prefetching can effectively accelerate the memory access speed of tree-based in-memory index and improve index performance.

Publish Information

DOI: 10.19734/j.issn.1001-3695.2024.02.0051
Publish at: Application Research of Computers Accepted Paper, Vol. 41, 2024 No. 10

Publish History

[2024-07-05] Accepted Paper

Cite This Article

来逸瑞, 李永坤, 许胤龙. 基于路径预取的树型索引查询优化 [J]. 计算机应用研究, 2024, 41 (10). (2024-07-12). https://doi.org/10.19734/j.issn.1001-3695.2024.02.0051. (Lai Yirui, Li Yongkun, Xu Yinlong. Tree-based in-memory index query optimization based on path prefetching [J]. Application Research of Computers, 2024, 41 (10). (2024-07-12). https://doi.org/10.19734/j.issn.1001-3695.2024.02.0051. )

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  • Application Research of Computers Monthly Journal
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    CN  51-1196/TP

Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

Aiming at the urgently needed cutting-edge technology in this discipline, Application Research of Computers reflects the mainstream technology, hot technology and the latest development trend of computer application research at home and abroad in a timely manner. The main contents of the journal include high-level academic papers in this discipline, the latest scientific research results and major application results. The contents of the columns involve new theories of computer discipline, basic computer theory, algorithm theory research, algorithm design and analysis, blockchain technology, system software and software engineering technology, pattern recognition and artificial intelligence, architecture, advanced computing, parallel processing, database technology, computer network and communication technology, information security technology, computer image graphics and its latest hot application technology.

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