COLORIS: A dynamic cache partitioning system using page coloring
COLORIS: A dynamic cache partitioning system using page coloring
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DOI：
10.1145/2628071.2628104
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发表时间：
2014-08
期刊：
影响因子：
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通讯作者：
Y. Ye;R. West;Zhuoqun Cheng;Ye Li
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文献类型：
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作者：
Y. Ye;R. West;Zhuoqun Cheng;Ye Li
多层处理器中的共享缓存将受到共同运行线程的争论。最终的干扰可能会导致单个应用的高度变化性能。对于实时应用程序，这尤其有问题，需要可预测的时机保证。以前的工作已经应用了页面着色技术来分区共享的缓存，因此在共同运行的工作负载中，冲突错过将最小化。但是，先前的页面着色技术尚未解决在过度承诺的处理器上划分缓存的问题，在该处理器上，可执行线程多于内核。同样，页面着色技术尚未证明有效地适应了具有不同内存需求的线程的高速缓存分区大小。本文提出了一个名为Collis的内存管理框架，该框架为使用页面着色提供了静态和动态缓存分区的支持。 Cololis支持新颖的政策，以重新配置过度承诺系统中的应用程序线程之间的页面颜色分配。对于服务质量（QoS），Coloris监视运行应用程序的缓存率和触发器重新分配缓存，以防止超过应用程序特定范围的错率。本文介绍了应用于Linux的Cololis的设计和评估。我们为一组SPEC CPU2006工作负载展示了Cololis到色彩页面的效率和有效性，从而增强了对现有页面着色技术的性能隔离。
Shared caches in multicore processors are subject to contention from co-running threads. The resultant interference can lead to highly-variable performance for individual applications. This is particularly problematic for real-time applications, requiring predictable timing guarantees. Previous work has applied page coloring techniques to partition a shared cache, so that conflict misses are minimized amongst co-running workloads. However, prior page coloring techniques have not addressed the problem of partitioning a cache on over-committed processors where there are more executable threads than cores. Similarly, page coloring techniques have not proven efficient at adapting the cache partition sizes for threads with varying memory demands. This paper presents a memory management framework called COLORIS, which provides support for both static and dynamic cache partitioning using page coloring. COLORIS supports novel policies to reconfigure the assignment of page colors amongst application threads in over-committed systems. For quality-of-service (QoS), COLORIS monitors the cache miss rates of running applications and triggers re-partitioning of the cache to prevent miss rates exceeding applications-specific ranges. This paper presents the design and evaluation of COLORIS as applied to Linux. We show the efficiency and effectiveness of COLORIS to color memory pages for a set of SPEC CPU2006 workloads, thereby enhancing performance isolation over existing page coloring techniques.