Timing penalties associated with cache sharing

V. Babka, P. Libic, P. Tůma
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引用次数: 6

Abstract

Although important from software performance perspective, the behavior of memory caches is not captured by the common approaches to modeling of software performance, where the software performance models tend to treat operation durations as constants despite the fact that the operations compete for memory caches. Incorporating memory cache models into software performance models is hindered by the fact that existing cache models do not provide information about timings and penalties, but only about hits and misses. The paper outlines the relationship of cache events and cache timings on a real computer architecture, indicating that the existing practice of modeling cache miss penalties as constants is not sufficient to model software performance faithfully.
与缓存共享相关的时间惩罚
尽管从软件性能的角度来看,内存缓存的行为很重要,但是软件性能建模的常用方法并没有捕捉到内存缓存的行为,在这些方法中,软件性能模型倾向于将操作持续时间视为常量,尽管这些操作会竞争内存缓存。将内存缓存模型整合到软件性能模型中受到阻碍,因为现有的缓存模型不提供有关时间和惩罚的信息,而只提供命中和未命中的信息。本文概述了真实计算机体系结构中缓存事件和缓存时间的关系,指出现有的将缓存缺失惩罚建模为常量的做法不足以忠实地模拟软件性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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