摘要
针对嵌入式系统对嵌入式操作系统的要求,本文分析了基于Linux任务优先级的调度策略中实时性能的不足,提出了一种嵌入式Linux任务调度模型,将任务的相对截止期和空闲时间这两个特征参数结合起来,综合设计任务的优先级,而且任务的优先级由相对截止期和空闲时间惟一确定,从而提高任务调度的成功率,增强了系统的实时性能。
Accordlng to the requirement of the embodded operating system for embedded systems, the deficiency of real-time performance based on Linux task priority scheduling policy is analysed, then a task scheduling model about embedded Linux is presented, the two characteristic parameters of relative deadline and slack of, a task are combined to design its task priority, the priority of a task is uniquely determined by its relative deadline and slack, so the succeed ratio of task scheduling is increased and the real-time performance of system is improved.
出处
《计算机与现代化》
2006年第8期1-4,共4页
Computer and Modernization
关键词
嵌入式操作系统
实时系统
任务优先级
调度策略
embedding operating system
real-time system
task priority
scheduling policy
