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中文摘要：
为改进并提高Linux系统的响应时间，从而达到实时化的目的，本文分析Linux时钟系统在实时性方面存在的不足，研究时钟中断服务、多模式时钟中断以及精密的时钟系统．具体修改了原时钟系统，实现一个具有较高软实时性的Linux内核，重点实现一个与原时钟系统共存的精密时钟系统，提出采用双时钟系统提高Linux实时性．支持具有强实时（精度为微秒）的应用，仿真结果表明效果良好．
英文摘要：
For shortening the response time of Linux, research is focused on the following three aspects after analyzing drawback of Linux time, which are modifying the time interrupt services, multi-mode time interrupt and precise time system. A new Linux kernel with high real-time performance by reform its time system is implemented. The key achievement is adding a high-precision time system that coexists with the old one. The reformed kernel runs on PC for long time and meets the real- time demands in the microsecond level. The experiment results are given.
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