一种自动分析网络软件时延的工具

网络软件实现的复杂性及运行的动态性增加了精确分析时延出现原因的难度.利用先进微处理器提供的性能监视功能和操作系统网络软件实现的特点,NetSlice提供了一种新颖、模块化且具有良好扩展性的自动分析网络软件时延的方法.首先介绍NetSlice的体系结构、各组成部分的功能和关系,然后分析其性能开销和应用策略,最后给出Linux操作系统中TCP发送过程的时延分析结果.实验结果表明,NetSlice非常有助于发现造成网络软件时延的真正原因.

A Tool for Automated Analysis of Network Software Latency

The complexity and the dynamic executing behavior of network software add to the difficulties for identifying the precise causes of latency. Using performance monitoring functions provided by the advanced microprocessor and implementation characteristics of network software, NetSlice provides a novel, modular, and extensible way for automated analysis of network software latency. The architecture of NetSlice and its components are introduced at first. Then the performance of NetSlice is studied in detail and the typical application strategy is also given.To demonstrate the utility of NetSlice,the results of analyzing the latency of TCP sending process on linux operating system are presented.The experimental results show NetSilce can shed considerable light on the causes of latency in network software