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	Rethinking compiler optimizations for the linux kernel: An explorative study
	Yuan, Pengfei ; Guo, Yao ; Chen, Xiangqun
	2015
英文摘要	Performance of the operating system kernel is critical to many applications running on it. Although many efforts have been spent on improving Linux kernel performance, there is not enough attention on GCC, the compiler used to build Linux. As a result, the vanilla Linux kernel is typically compiled using the same -O2 option as most user programs. This paper investigates how different configurations of GCC may affect the performance of the Linux kernel. We have compared a number of compiler variations from different aspects on the Linux kernel, including switching simple options, using different GCC versions, controlling specific optimizations, as well as performing profile-guided optimization. We present detailed analysis on the experimental results and discuss potential compiler optimizations to further improve kernel performance. As the current GCC is far from optimal for compiling the Linux kernel, a future compiler for the kernel should include specialized optimizations, while more advanced compiler optimizations should also be incorporated to improve kernel performance. ? 2015 ACM.; EI
语种	英语
出处	6th Asia-Pacific Systems Workshop, APSys 2015
DOI标识	10.1145/2797022.2797030
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/436785]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Yuan, Pengfei,Guo, Yao,Chen, Xiangqun. Rethinking compiler optimizations for the linux kernel: An explorative study. 2015-01-01.

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