Performance modeling and analysis of disk arrays
Performance modeling and analysis of disk arrays
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磁盘阵列性能建模与分析
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
R. Katz
中科院分区：
文献类型：
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作者：
Edward K. F. Lee;R. Katz
随着磁盘阵列的广泛应用，对磁盘阵列性能进行建模和分析的工具变得越来越重要。特别是，准确的性能模型和系统的分析技术，再加上对预期工作负载的透彻理解，对于配置和设计磁盘阵列都是非常宝贵的。不幸的是，与许多并行系统一样，由于排队和fork-join同步，磁盘阵列很难建模和分析。本文提出了一种非冗余磁盘阵列性能分析模型，并提出了一种基于利用率曲线的冗余磁盘阵列性能分析新方法。在这两种情况下，我们都提供了我们工作的应用。我们使用分析模型推导出磁盘阵列中数据条带化的最佳大小的方程，并应用利用率配置文件来分析第二个磁盘阵列原型RAID-II的性能。分析结果用于回答有关RAID-II的几个性能相关问题，并将RAID-II的性能与我们的第一个磁盘阵列原型RAID-I进行比较。
As disk arrays become widely used, tools for modeling and analyzing the performance of disk arrays become increasingly important. In particular, accurate performance models and systematic analysis techniques, combined with a thorough understanding of the expected workload, are invaluable in both configuring and designing disk arrays. Unfortunately, disk arrays, like many parallel systems, are difficult to model and analyze because of queueing and fork-join synchronization. In this dissertation, we present an analytic performance model for non-redundant disk arrays and a new technique based on utilization profiles for analyzing the performance of redundant disk arrays. In both cases, we provide applications of our work. We use the analytic model to derive an equation for the optimal size of data striping in disk arrays, and we apply utilization profiles to analyze the performance of RAID-II, our second disk array prototype. The results of the analysis are used to answer several performance related questions about RAID-II and to compare the performance of RAID-II to RAID-I, our first disk array prototype.