Research Reform on Embedded Linuxs Hard Real-time Capability in Application

摘要：

To well support the hard real-time requirement for embedded applications,we enhance the real-time ability in Linux kernel through two new kernel mechanisms. Firstly,we focus on one of the major sources of unresponsiveness in the kernel,namely the presence of non-preemptible code sections,a new technique called normal task delayed locking technique can be used to reduce the OS latency. Secondly,because of the coarse-grained timer mechanism can not satisfy the microsecond-level timer resolution required by real-time tasks,we present a new microsecond-level timer mechanism,which is based on UTIME technique.The test result shows that the design can improve the real-time performance of the Linux system efficiently,which could be used to most of the embedded hard real-time systems.

作者: ZUJUE CHEN XING LUO ZHIXIONG ZHANG

作者单位: Department of Computer Science and Technology Jiangsu University,Zhenjiang Jiangsu,212013,China

会议类型: 国际会议

会议名称: The 2008 International Conference on Embedded Software and Systems Symposia(ICESS 2008)(2008国际嵌入式系统及嵌入式软件会议)

会议地点: 成都

会议语种:英文

页码: 146-151

在线出版日期: 2008-01-01（万方平台首次上网日期，不代表论文的发表时间）