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	Reducing last level cache pollution through OS-level software-controlled region-based partitioning
	Huang, Tao ; Zhong, Qi ; Guan, Xuetao ; Wang, Xiaoyin ; Cheng, Xu ; Wang, Keyi
	2012
英文摘要	Performance degradation caused by cache pollution in the last level cache is extremely severe. In this paper, we propose a software controlled mechanism for last level cache partitioning at the region level in order to reduce intra-application last level cache misses due to cache pollution. A profiling feedback mechanism is used to analyze the inter-region cache interference. Guided by the profiling information, we enhance operating system support for mapping poor locality regions to a small slice in the last level cache in order to eliminate the harmful effect of non-reusable data. Our approach does not require any hardware support or new instructions, and is also application transparent. In comparison with the default linux, our approach, called Soft-RP, reduces LLC MPKI, the last level cache misses per 1000 instructions, up to 30.88%, and 19.31% on average; execution time measurement shows that Soft-RP can improve the performance up to 15.51%, and 8.14% on average. ? 2012 ACM.; EI; 0
语种	英语
DOI标识	10.1145/2245276.2232065
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/412339]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Huang, Tao,Zhong, Qi,Guan, Xuetao,et al. Reducing last level cache pollution through OS-level software-controlled region-based partitioning. 2012-01-01.

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