Networking(Distributed Systems) 网络处理(分布式系统) A distributed system is a collection processors that do not share memory or a clock. Each processor has its own local memory 分布式系统是一组不共享存储器或时钟的处理器集合,每个处理器有自己的 内存 The processors in the system are connected through a communication network系统中的处理器通过通信网络连接 A distributed system provides user access to various system resources分布式系统提供用户访问各种系统资源的手段 Access to a shared resource allows:对共享资源的访问可以实现 Computation speed-up加速运算 ncreased data availability提高数据利用性 Enhanced reliability增强可靠性 Applied Operating System Concepts 3.9Applied Operating System Concepts 3.9 Networking (Distributed Systems) 网络处理（分布式系统） • A distributed system is a collection processors that do not share memory or a clock. Each processor has its own local memory. 分布式系统是一组不共享存储器或时钟的处理器集合，每个处理器有自己的 内存 • The processors in the system are connected through a communication network.系统中的处理器通过通信网络连接 • A distributed system provides user access to various system resources.分布式系统提供用户访问各种系统资源的手段 • Access to a shared resource allows:对共享资源的访问可以实现： – Computation speed-up 加速运算 – Increased data availability 提高数据利用性 – Enhanced reliability 增强可靠性