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2008
IEEE

PFC: Transparent Optimization of Existing Prefetching Strategies for Multi-Level Storage Systems

10 years 3 months ago
PFC: Transparent Optimization of Existing Prefetching Strategies for Multi-Level Storage Systems
The multi-level storage architecture has been widely adopted in servers and data centers. However, while prefetching has been shown as a crucial technique to exploit the sequentiality in accesses common for such systems and hide the increasing relative cost of disk I/O, existing multi-level storage studies have focused mostly on cache replacement strategies. In this paper, we show that prefetching algorithms designed for single-level systems may have their limitations magnified when applied to multi-level systems. Overly conservative prefetching will not be able to effectively use the lower-level cache space, while overly aggressive prefetching will be compounded across levels and generate large amounts of wasted prefetch. We take an innovative approach to this problem: rather than designing a new, multi-level prefetching algorithm, we developed PreFetching-Coordinator (PFC), a hierarchy-aware optimization applicable to any existing prefetching algorithms. PFC does not require any ap...
Zhe Zhang, Kyuhyung Lee, Xiaosong Ma, Yuanyuan Zho
Added 30 May 2010
Updated 30 May 2010
Type Conference
Year 2008
Where ICDCS
Authors Zhe Zhang, Kyuhyung Lee, Xiaosong Ma, Yuanyuan Zhou
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