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A General, Tractable and Accurate Model for a Cascade of LRU Caches

机译:LRU缓存级联的通用,可操作且准确的模型

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The recent evolution of the Internet towards "Information-centric" transfer modes has renewed the interest in characterizing multi-cache systems, in which requests not satisfied by a cache are forwarded to other caches. In this work, we characterize the traffic statistics of the output (miss) stream, via a simple but accurate approximate analysis for LRU caches feeded by general "renewal" traffic patterns. In turn, we exploit such output stream traffic pattern to analyze the performance of the subsequent cache stage, and so on. The computational efficiency of our model, joint with its ability to handle traffic patterns beyond the traditional independent reference model, permits simple and tractable assessment of cache hierarchies.
机译:Internet向“信息中心”传输模式的最新发展重新激发了人们对表征多缓存系统的兴趣,在该系统中,缓存不满足的请求将转发到其他缓存。在这项工作中,我们通过简单而准确的近似分析来分析输出(未命中)流的流量统计数据,这些分析是由一般“更新”流量模式提供的。反过来,我们利用这种输出流流量模式来分析后续缓存阶段的性能,依此类推。我们模型的计算效率,加上其处理流量模式的能力,超越了传统的独立参考模型,可以对缓存层次结构进行简单而易于处理的评估。

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