高性能路由器中NP并行处理及拥塞控制机制研究

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1、国防科学技术大学硕士学位论文高性能路由器中NP并行处理及拥塞控制机制研究姓名：时向泉申请学位级别：硕士专业：计算机科学与技术指导教师：苏金树20071001国防科学技术大学研究生院博士学位论文文调度机制CCAAQM及其具体实现算法。模拟实验证明，CCAAQM机制能够在网络节点为需要可靠保证的流应用提供区分服务。本文的研究受到国家自然科学基金重点课题和国家“863计划"重点课题支持。部分研究成果应用在国家“863计划"重点课题“新一代互联网高性能路由器”研究中。该课题2006年获得国家科技进步二等奖。关键词：网络

2、处理器、多线程并行、负载均衡、区分服务、极大流、多阶段拥塞控制国防科学技术大学研究生院博士学位论文ABSTRACTInrecentyears，newnetworkapplicationsandprotocolsaswellasthelinkbandwidthrequirementsgrowrapidly,higherperformanceandscalabilityarerequiredfornextgenermionllighperformanceroutcrs．However，thetraditionalr

3、outerscannotmeettherequirementsmentionedabove．Thereforenetworkprocessors—basedhighperformanceroutershaveattractedmuchattentionbecauseoftheirhigherperfommce，flexibilityandsealability．Theperformanceofanetworkprocessors—basedhighperformanceroutermainlydependson

4、threefactors：1)．theinherentperformanceofnetworkprocessorsusedintherouter；2)．theorganizationandemploymentofnetworkprocessorsinroutersystems；3)．therelatedcontrolalgorithmsofQoS．Carryingonresearchworkaroundthethreefactorsmentionedaboveisveryimportanttoimproveth

5、eperformanceofnetworkprocessors-basedhi．gllperformanceroutcrs．Thisdissertationfocusesonthethreefactorsrelatedtotheperformanceofnetworkprocessors-basedrouters．Itincludes：1)．theperformanceofparallelmultithreads；2)．thedynamicloadbalancealgorithmforhighspeedpack

6、etforwardingsystemcomposedoftheparallelnetworkprocessors；3)．thecongestioncontrolmechanismsfitforparallelnetworkprocessors．Itisimportantfordesigningnetworkprocessors—basedhighperformancerouters．Theperformanceofnetworkprocessorshasasignificantimpactontheperfor

7、manceofrouters，whiletheperformanceofnetworkprocessorsmainlydependsontheparallelprocessingmechanisms．Networkprocessorsparallelperformancemodel(NP3M)andnetworkprocessorsMultithreadParallelProcessingTimeModelareconstructedinthedissertation,andthesemodelsaleveri

8、fiedbyexperiments．Furthermore，thecharacteristicsofmultithreadhaltingandthecostofmultithreadswitchinga陀studied,andtheresultsareverifiedbyexperiments．Theresultsoftheresearchhavebeenusedtoguidethed