MACROMEDIA FLASH MEDIA SERVER 2-SERVER MANAGEMENT ACTIONSCRIPT LANGUAGE Guide d'installation télécharger pdf (Page 19)

Comparing with Flash Media Server 2

Flash Media Server 3.5 nearly doubles the total number of active streams from Flash Media

Server 2.Increasescanbefoundinbothliveandprerecordedvideoapplicationsandallowfor

signicantly more connections at lower bit rates than Flash Media Server 2.

Total concurrent video stream capacity between Flash Media Server version 2 and version 3.5

All tests were sampled using RTMP. Values for live streaming were sampled at 60% CPU. Values for recorded

on-demand streaming were sampled at 20% CPU.

Connection throttling

Feature in Flash Media Streaming Server and Flash Media Interactive Server; requires Flash Player

6 or later.

Flash Media Server 3.5 features connection-handling management that ensures high-quality

serviceforuserswhoarealreadyconnectedtotheserver.Inthepast,ifalargenumberofnew

users was trying to connect to a popular application, the current users could experience a

disruptionofplayback.Connectionthrottlingprovidesanumberofmethodstopreserve

quality of service:

• Restrictsthenumberofthreadsthathandleincomingconnections.

• Providesacongurablemaximumrate(persecond)atwhichtheserveracceptsnewconnections.

Connectionsthatexceedthismaximumratearedelayedandqueuedintheoperatingsystem’s

networkstack.eOSlimitsthenumberofconnectionsitkeepsinitsqueue.Whenthequeueis

full,clientsattemptingtoconnectarerejected.Notethatthismaximumrateisper“listener.”For

example,ifyourserverisconguredtolistenonports1935and80,theconnectionrateappliesto

eachport.Soiftheconnectionratewassetto10connectionspersecond,thatcouldpotentially

meanatotalmaximumconnectionrateof20persecond.

• Providesamaximumqueuelength.Beyondthisqueuelength,theserverrejectsconnectionsto

maintain quality of service for currently connected users.

ese settings are, of course, fully congurable by the server administrator.

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MACROMEDIA FLASH MEDIA SERVER 2-SERVER MANAGEMENT ACTIONSCRIPT LANGUAGE Guide d'installation Page 19