CST-trees: cache sensitive t-trees

  • Authors:
  • Ig-hoon Lee;Junho Shim;Sang-goo Lee;Jonghoon Chun

  • Affiliations:
  • Prompt Corp., Seoul, Korea,;Department of Computer Science, Sookmyung Women's University, Korea;School of Computer Science & Engineering, Seoul National University, Korea;Department of Computer Engineering, Myongji University, Korea

  • Venue:
  • DASFAA'07 Proceedings of the 12th international conference on Database systems for advanced applications
  • Year:
  • 2007

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Abstract

Researchers have modified existing index structures into ones optimized for CPU cache performance in main memory database environments. A Cache Sensitive B+-Tree is one of them. It is designed to minimize the impact of cache misses for B+-Trees and it has been known to be more effective than other types of main memory index structure including T-Trees. In this paper, we introduce a Cache Sensitive T-Tree (CST-Tree) and show how T-Trees can also be redesigned to be cache sensitive. We present an experimental performance study which shows that our Cache Sensitive T-Trees can outperform the original T-Trees and Cache Sensitive B+-Trees on average 65 percent and 17 percent, respectively.