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首页> 外文会议>International Conference on Parallel and Distributed Processing Techniques and Applications(PDPTA'03) v.2; 20030623-20030626; Las Vegas,NV; US >Two-Level Disk Cache of RAID 5 Based on Both Temporal and Spatial Locality
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Two-Level Disk Cache of RAID 5 Based on Both Temporal and Spatial Locality

机译：基于时间和空间局部性的RAID 5二级磁盘缓存

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摘要

In RAID system, disk cache is one of the important elements in improving the system performance. Two-level cache displays superior performance in comparison to single cache and is effective in temporal and spatial locality. The proposed cache system consists in two levels. The first level cache is a set associative cache with small block size that uses a set-associative mapping scheme whereas the second level cache is a fully associative cache with large block size that uses a fully associative mapping scheme. In this paper, a RAID 5 disk cache model is presented that is located on a disk controller, which can improve disk input and output time especially in a large capacity disk cache and which can maintain consistency effectively. The aim is to show, in terms of hit ratio and service time, that the two-level cache structure presented in this paper is in fact much improved.
机译：在RAID系统中，磁盘缓存是提高系统性能的重要元素之一。与单级高速缓存相比，二级高速缓存显示出卓越的性能，并且在时间和空间局部性方面均有效。建议的缓存系统分为两个级别。第一级高速缓存是使用集合关联映射方案的小块大小的集关联高速缓存，而第二级高速缓存是使用完全关联映射方案的大块大小的全关联高速缓存。本文提出了一种位于磁盘控制器上的RAID 5磁盘缓存模型，该模型可以改善磁盘的输入和输出时间，尤其是在大容量磁盘缓存中，并且可以有效地保持一致性。目的是从命中率和服务时间上证明，本文介绍的二级缓存结构实际上已得到很大改进。

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