量化测试高性能L5-Dispatcher  

Quantitative Measurement of High Performance L5-Dispatcher

作　　者：雷迎春[1] 张松[1] 李国杰[1] 

机构地区：[1]中国科学院计算技术研究所国家智能计算机研究开发中心,北京100080

出　　处：《计算机研究与发展》2003年第8期1153-1161,共9页Journal of Computer Research and Development

基　　金：国家"八六三"高技术研究发展计划软件专项基金 ( 2 0 0 2AA1Z2 10 2 )

摘　　要：主要内容是关于HTTPSplicing的性能评测 HTTPSplicing是针对TCPSplicing的缺陷而提出的 ,TCPSplicing现被广泛应用在L5 Dispatcher(即基于内容的Web交换机 )中 测试内容包括开销测试、性能测试、与L4 Dispatcher的对比测试、与TCPSplicing的对比测试和扩展性测试 所获得的结论为 :当尽力 (besteffort)访问 1KB大小的文件时 ,HTTPSplicing的性能要比TCPSplicing至少快 3 5倍 ,而当尽力访问 10KB大小的文件时 ,HTTPSplicing的性能比TCPSplic ing的性能高 2 2 % 当尽力访问 30 7KB大小的文件时 ,HTTPSplicing的一种实现———WebPatcher———的最好性能值为5 5 5 6 8replies/s ,超过了ArrowPoint公司的CS 10 0 (1193replies/s)和Alteon公司的ACEdirector 3(v6 0 2 5 ) (135 6replies/s).This paper is mainly concerned with the performance evaluation of HTTP Splicing. Aiming at the flaws of TCP Splicing, HTTP Splicing, a method adopted widely by L5-dispatcher which is a sort of web content switch, is put forward. The testing methods include overhead testing, performance testing, testing contrasted with L4-dispatcher, testing contrasted with TCP Splicing, and scalability testing. The conclusions are: when accessing a 1KB file under best effort model, performance of HTTP Splicing is better than that of TCP Splicing at least by 3.5; while accessing a 10KB files under best effort model, performance of HTTP Splicing improves that of TCP Splicing by 22%. When accessing a 307 bytes file under best effort model, the best performance of an implementation of HTTP Splicing, WebPatcher, is 5556.8 replies/s, outdoing ArrowPoint Co.'s CS-100(1193 replies/s) and Alteon Co.'s ACEdirector 3(v6.0.25)(1356 replies/s).

关 键 词：DISPATCHER TCP SPLICING HTTP SPLICING 评测工具 

分 类 号：TP393.05[自动化与计算机技术—计算机应用技术]