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arXiv 1906.09667cs.DB
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基于LSM的存储系统的性能稳定性(扩展版)

On Performance Stability in LSM-based Storage Systems (Extended Version)

Chen Luo, Michael J. Carey

摘要:

日志结构的合并树(LSM-tree)由于其优越的写入性能而被广泛应用于现代NoSQL系统。尽管LSM树很受欢迎,但由于其快速的内存写入和缓慢的后台I/O操作之间的固有不匹配,它们因写入停顿和大的性能差异而受到批评。在本文中,我们使用一个简单而有效的两阶段实验方法来评估各种LSM树设计的写失速。我们进一步探讨了LSM合并缓存器的设计选择,以最大限度地减少I/O带宽预算下的写停顿。我们已经进行了广泛的实验中的Apache AsterixDB系统的背景下,我们在这里的结果。

英文摘要:

The Log-Structured Merge-Tree (LSM-tree) has been widely adopted for use in modern NoSQL systems for its superior write performance. Despite the popularity of LSM-trees, they have been criticized for suffering from write stalls and large performance variances due to the inherent mismatch between their fast in-memory writes and slow background I/O operations. In this paper, we use a simple yet effective two-phase experimental approach to evaluate write stalls for various LSM-tree designs. We further explore the design choices of LSM merge schedulers to minimize write stalls given an I/O bandwidth budget. We have conducted extensive experiments in the context of the Apache AsterixDB system and we present the results here.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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