Research reform on real-time operating system based on Linux

This paper describes some current popular real-time operation systems such as QNX, VxWorks, analyses Linux present status and weak points for real-time supporting characteristics and related main trend technology of real-time support based on Linux kernel, compares comprehensively strong and weak points among different kinds of solutions; accordingly draws out a typical real-time application model driven by external interrupt, combines some present research results and thoughts, puts forward reform scheme of real-time operation system which is realized in Linux operation system.