Flash：一种高效，可移植的Web服务器【外文翻译】

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1、毕业论文（设计）外文翻译外文原文Flash:AnEfficientandPortableWebServerAbstractThispaperpresentsthedesignofanewWebserverarchitecturecalledtheasymmetricmulti-processeventdriven(AMPED)architecture,andevaluatestheperformanceofanimplementationofthisarchitecture,theFlashWebse

2、rver.TheFlashWebservercombinesthehighperformanceofsingle-processevent-drivenserversoncachedworkloadswiththeperformanceofmultiprocessandmulti-threadedserversondisk-boundworkloads.Furthermore,theFlashWebserveriseasilyportablesinceitachievestheseresultsusi

3、ngfacilitiesavailableinallmodernoperatingsystems.TheperformanceofdifferentWebserverarchitecturesisevaluatedinthecontextofasingleimplementationinordertoquantifytheimpactofaserver’sconcurrencyarchitectureonitsperformance.Furthermore,theperformanceofFlashi

4、scomparedwithtwowidelyusedWebservers,ApacheandZeus.ResultsindicatethatFlashcanmatchorexceedtheperformanceofexistingWebserversbyupto50%acrossawiderangeofrealworkloads.WealsopresentresultsthatshowthecontributionofvariousoptimizationsembeddedinFlash.Webser

5、versrelyoncachingoffrequently-requestedWebcontentinmainmemorytoachievethroughputratesofthousandsofrequestspersecond,despitethelonglatencyofdiskoperations.SincethedatasetsizeofWebworkloadstypicallyexceedthecapacityofaserver’smainmemory,ahigh-performanceW

6、ebservermustbestructuredsuchthatitcanoverlaptheservingofre-questsforcachedcontentwithconcurrentdiskoperationsthatfetchrequestedcontentnotcurrentlycachedinmainmemory.1IntroductionTheperformanceofWebserversplaysakeyroleinsatisfyingtheneedsofalargeandgrowi

7、ngcommunityofWebusers.Portablehigh-performanceWebserversreducethehardwarecostofmeetingagivenservicedemandandprovidetheflexibilitytochangehardwareplat-formsandoperatingsystemsbasedoncost,availability,orperformanceconsiderations.Webserversrelyoncachingoffr

8、equently-requestedWebcontentinmainmemorytoachievethroughputratesofthousandsofrequestspersecond,despitethelonglatencyofdiskoperations.SincethedatasetsizeofWebworkloadstypicallyexceedthecapacityofaserver’smainmemory,ahigh-performan