导　　师： 周彩根

学科专业： 081203

授予学位： 硕士

作　　者： ;

机构地区： 北京邮电大学

摘　　要： 随着计算机技术的发展,流媒体服务变成越来越普遍,其被广泛应用于计算机服务,流媒体服务对网络环境,设备性能等方面也有着较高的要求,保证流媒体服务的实时性,稳定性成为流媒体服务的难点问题。 旅客服务系统是基于流媒体服务,用于解决旅客服务信息的及时广播,用于为旅客提供相关的信息服务。系统配置中CPU与内存是最为保贵的资源,其二者利用直接影响到系统的性能,因而合理的使用CPU与内存,是提高流媒体服务性能的着手点； 本文研究的是在系统的配置与资源一定的情况下,通过增加CPU对于流媒体关键进程的服务时间,同时合理管理内存,增加内存对于关键进程的服务空间,使得关键进程或对象可以长久驻留于内存,来提高流媒体效率,保证实时性；主要从CPU与内存资源二个主要方面入手来最大程度的提高系统中关键进程的响应速度,从而保证高效的流媒体服务。 With the development of computer technology, Streaming services become more and more common, It has been widely used in computer services, Streaming media services requirements Network Environment and Equipment performance highly.It is important to ensure the real-time streaming services, the stability of a streaming media services. Passenger service system is based on streaming media services, to provide timely Passenger service information broadcasting and other informations for Passenger. In system configuration the CPU and memory are the most valuable resource, its use of both directly impact on the performance of the system, so the rational use of CPU and memory is the start point to improve the Streaming services performance; This paper is to study how to enhance program efficiency while we just have limited computer resources; First increasing the CPU service time for the key processes, Second the rational management of memory and increasing memory space for the services of key processes to make a key process or object can reside in memory for long time; After we study two aspects mainly from the CPU and memory resources, reduce system response time, enhance performance for the key streamingmedia processes; Ensure the efficient streaming media services.

关 键 词： 实时性 内存锁定 内存压缩 流媒体

领　　域： [电子电信] [电子电信]