Real-time Performance Of Embedded Linux For The Communications Industry Transformation

As an excellent free operating system, Linux has its own strength.Many foreign telecommunication equipment manufacturers have paid close attention to Linux and developed telecommunication equipments and smart mobile phones based on the embedded Linux.After this long time development, Linux has enough qualifications to be applied to the large-scale telecommunication equipments.Now, the R&D of embedded Linux has important significance to lower the cost and improve the security level of products. This paper analyzed the basic concepts of linux's real-time performance particularly, the factors that influence the real-time performance and the basic ways that improve the Linux system performance. Based upon this discovery, it also explained the design and realization of modules to reconstruct Linux kernel finished by me, which include the main data structure, algorithm and function flowchart. In the end, we tested the system performance of real-time Linux kernel with two benchmarks which are thread processing speed and semaphore processing speed.At last, we compared it with standard Linux kernel and Vxworks , and get the impersonal ecaluation of the kernel.