The Linux kernel techniques, such as non-interruptible kernel, coarse-grained time mechanism and lack of effective real-time scheduler etc., can’t well support the confirmability which is the basic characteristic of real-time operating system. Much research has been done on the real-time Linux in the world. In this paper, the shortcomings of Linux kernel when applied to real-time system and the relevant solutions implemented in some famous Linux projects, including RT-Linux, Kurt-Linux, and Hardhat-Linux, are introduced. Research on implementing interrupt in process is introduced and the final experiment shows that the research is effective and significant.
The paper proposes an analytical method of network survivability performance based traffic, in which the topology characteristic and the traffic characteristic are both considered. In addition, for the network that relies on another network, a solution to survivability analysis is proposed.