When development applications on Linux system, we need to optimize the system to control the value of the kernel parameter. Generally, we touch system configuration file, named "/etc/sysctl.conf". But, When we work use embedded system, we falling to configure. In this paper, through kernel compile using Embedded Linux, for a method for the optimization of the system. Kernel version is Red Hat Linux 9.0(Kernel Ver. 2.6.18), and Cross compiler is "Montavista Linux Professional Edition 5.0.0".