VxWorks和RTlinux的性能测试分析

比较并分析了两种操作系统VxWorks和RTlinux的可适用性及可控性;为了使二者之间的差异表现的更加充分,基于统一的硬件平台和相同的测量方法,在两种操作系统稳定运行期间,我们对能反应操作系统性能的四项指标:上下文切换,中断响应能力,同步运行能力和信息传递能力,进行了功能性测试;在优先级反转问题上,对二者的效率进行了检测。测试结果表明,无论VxWorks还是RTlinux都显示出了良好的适用性,但是VxWorks具有更好的可控性和可预知性,因此这使它成为更好发展前景和更严格软硬件的实时操作系统平台。

Analysis of Performance of RTlinux and Vxworks Based on Test

This paper compares and evaluates the suitability of two real-time operating systems,the commercially available VxWorks and thepublicly available RTLinux.Holding the hardware constant and using different measurement methodologies,we measured the over- heads incurred during operating systems context switching,interrupt processing,objeetsynchronization,and message passing.We also exam- ine their effectiveness in terms of how they handle priority inversion problem.Our finding illustrates that both VxWorks and RTLinux pro- vide good raw performance.However,VxWorks is more predictable and deterministic,thereby making it more suitable as an operating sys- tem platform for developing and running soft and hard real-time applications.