基于P2P的流媒体监控传输系统的设计与实现  

Design and Realization of Streaming Media's Supervision Transmitting System Based on P2P

作　　者：蒲石[1] 

机构地区：[1]内江师范学院现代教育技术中心,四川内江641000

出　　处：《成都大学学报（自然科学版）》2010年第2期146-149,共4页Journal of Chengdu University（Natural Science Edition）

摘　　要：利用半同步/半异步的模式进行框架设计,结合任务池和线程池等技术设计和实现了基于P2P的CDN流媒体系统中媒体资源服务器和原始服务器之间的传输子系统,提出了基于任务池闲置信息和系统运行参数统计信息相结合的有效动态线程池和任务池管理算法,根据各种运行参数信息动态评估系统当前的负载和压力情况,对任务池和线程池尺寸进行动态修改.通过与两种传统实现方式的实验比较,采用新算法后,显著降低了CPU的负载,有效提高了系统效率和网络吞吐量.Half-Sync or Half-Async models were used to design the framework and a transmission sub-system was designed and realized based on media resources server and original sever in CDN streaming media of P2P with help of technologies such as task pool and thread pool.An effective dynamic thread pool management algorithm based on thread pool idle information and system runtime parameters statistics was proposed which dynamically adjusted the size of the task pool and thread pool in a heuristic way with the system load information and other run-time parameters.Compared with the experiments on two traditional realization ways,the new algorithm can reduce load of CPU remarkably and improve the network efficiency and throughput.

关 键 词：半同步/半异步 任务池 线程池 

分 类 号：TP302.8[自动化与计算机技术—计算机系统结构]