Tuning the Linux Kernel University of the （调优Linux内核的大学）.pdf

1 Tuning the Linux Kernel Long Yi, James Connan Department of Computer Science University of the Western Cape, Bellville, South Africa, 7535 Tel:+(27) (0)21 959-3010 Fax: +(27) (0)21 959-3006 Email: 2475600@uwc.ac.za, jconnan@uwc.ac.za Abstract— Linux continues to attract telecommunication in- transfer of large objects the network is very important dustry attention. Optimising the Linux kernel can improve sites [13]. system performance and reduce system total costs. The Linux If web site content is static, the subsystem that has kernel has a large number of parameters to fine-tune system performance available to the system administrator. We focus the most impact on the web servers’ performance is on the kernel parameters that are most relevant to adjust for the network subsystem. If the web site is dynamic, the improving performance for specific system classes. We optimise subsystem that has the most impact on web servers’ the Linux kernel for two important applications: Web servers performance is the memory subsystem [4]. and Database servers. The results show that our optimised • Database servers The role of the database server is to GNU/Linux system running the Kernel 2.4.29 achieves effective performance improvements. store, search, retriev