东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2006, Vol. 27 ›› Issue (4): 394-397.DOI: -

• 论著 • 上一篇    下一篇

WebitOS内核的实现机制及性能分析

张希元;赵海;孙佩刚;罗玎玎;   

  1. 东北大学信息科学与工程学院;东北大学信息科学与工程学院;东北大学信息科学与工程学院;东北大学信息科学与工程学院 辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004;沈阳炮兵学院;辽宁沈阳110162;辽宁沈阳110004
  • 收稿日期:2013-06-23 修回日期:2013-06-23 出版日期:2006-04-15 发布日期:2013-06-23
  • 通讯作者: Zhang, X.-Y.
  • 作者简介:-
  • 基金资助:
    国家发改委高技术产业化示范工程资助项目(20012167);;

Realization mechanism and performance of WebitOS kernel

Zhang, Xi-Yuan (1); Zhao, Hai (1); Sun, Pei-Gang (1); Luo, Ding-Ding (1)   

  1. (1) School of Information Science and Engineering, Northeastern University, Shenyang 110004, China; (2) Shenyang Artillery Academy, Shenyang 110162, China
  • Received:2013-06-23 Revised:2013-06-23 Online:2006-04-15 Published:2013-06-23
  • Contact: Zhang, X.-Y.
  • About author:-
  • Supported by:
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摘要： 描述了WebitOS的体系结构,WebitOS采用模块化分层结构设计,包含设备驱动、实时内核及轻型TCP/IP协议栈等模块,功能完备;分析了WebitOS内核的实现机制:实时调度采用了基于优先级抢占的多任务调度机制,内存管理采用了最佳匹配的分配算法和边回收边整理的回收算法.在此基础上,从内核运行的时空开销、支持EI应用等角度对WebitOS内核的性能进行了测试.结果表明,WebitOS内核是一个实时、精简且高效的内核,特别适用于资源受限环境下开发嵌入式实时应用.

关键词: 嵌入式操作系统, 硬实时, 嵌入式Internet, 抢占式调度, 最佳分配算法

Abstract: Describes the architecture of WebitOS. As a hierarchically modularized system with perfect function, WebitOS consists of several modules for device driver, real-time kernel and TCP/IP protocol, etc. Analyzes the realization mechanism of WebitOS kernel: employs a priority-based preemptive multi-task scheduler for real-time scheduling and uses the best-fit allocation algorithm and collection-coalition algorithm for memory management. Then, tests the performance of WebitOS kernel in view of space-time costs and support to EI application. The results show that WebitOS kernel is a real-time, simplified and effective one that is specially adoptable to embedded applications in resource-constrained environment.

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