TCP adaptation to EDS
Texte intégral
(2) INSTITUT NATIONAL DE RECHERCHE EN INFORMATIQUE ET EN AUTOMATIQUE. TCP. adaptation to EDS. Benjamin Gaidioz, Pascale Primet. N° 5121 February 2004. ISSN 0249-6399. ISRN INRIA/RR--5121--FR+ENG. THÈME 1. apport de recherche.
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(23) . MA GK@eRZMggc?IeRQJZMgHUQfKoXJQVHªgeKHJHA´6QJ;c? Zgc?G¡QV; QJ;c? Zz©?!HUQ<ZHVH<XVKoQJ?M´ kOGKzQV?Xª;K¤6gcr XVLcgPHJLeIeR?IHVHLcTGQJ;cZLOQªZHVHJ?IHf+dOLcXVgcr M \M}/}v´K¯eRZgcgc?IeRQJZMg>@Zz¤M?!H+XVZM> ¡QfH¬eKHJH i QVZPeRKMHVH i + 1 a:<;c?«eRZgcgc?!eQJZMg>KT eRZMgQVg6Lc? QVZgeRXV?IKH?!HG¡QfHSeKHJHGdO?IgQV¡4?X LcgQJ²QaXJ?!KMef;c?!H¾QV;c? ;crM;c?!HUQSeKHJHI c<G;c?gK@eRZgcgc?!eQJZMg ?RNOb#?XV?IgeR?!HGKZHJHGKMgddc?RQJ?!eQfHG¡Q!´cQa>Zz¤?IHªmKef QJZeRKMHVHAM :<;?a}^~# %§ '¬®KorMZXJQJ;c>µH¾gcZoQY>@ZOdO?Id^2:<;cH/[ULHQ©eZMgHJHQVHYgKMddOgrHZ>?aHJb#?IeR4e<>KoXV 6gr XVLc?IH<g}^~#/ class ← 1 date last drop ← now. º ·QV;c?XV? HGdKzQVK¯QVZH?Igd ¼ » H?IgdPb4KMef M?QVH dOXVZMb HSdO?RQV?IeQV?Id w v!· date last drop ← now class ← 1. ·" ¼ . class ← class + (date last drop − now ) ÷ (M × class > N ! class ← N. w v·. ·" ¼ ·! ¼ º · $'. \}/}. ). s $# » x w &%#| 1)KoXV 6gcr@HQJXfKzQJ?IrMT@ZXa}^~#/. ()*+,
(24) .-0/123-04+3
(25) . :<;HG>KMXJ 6gcrHUQVXVKoQJ?IrMTQV;KzQSeZMgHJHQVHag>@Zz¤6gr¯XVZM> KeRKMHVHªQJZKogZoQV;c?Xa>KT?IKd QJZbKef M?Q XV?ZOdO?IXJgcr4SW2KMef ?RQ¬XV?ZXVdc?XVgcreIKog ?!KMdQVZÀKo ?«ZHVH¬dc?RQJ?!eQVZg Kog4dQJ;6LHHJbcLcXVZLHSXV?RQVXVKMgHJ>H¥ HJZMgHI)³g¿ZLcX«>@bc?I>@?gQVKoQJZMg²´2ª?;K¤?>@Z6dc¡?!d QJ;?ÀKMHQ¯XV?RQVXVKMgHJ>Q«ZbOQJ>@!KzQJZMg¿HJZ)QV;KzQ QdcZ?!HgcZMQ¯XV?IKeQ«G;c?Ig%HJ??IeQV¤?PKMef 6gcZzG?IdcrM?>@?IgQfHLHJLKMT gdOeKoQJgcr K)ZHJHf KMef 6gcZzG?r? Lcef M?IXSbKef M?QVHI:<;HCHCdcZMgc?m6T)ef;c?Ief 6gcrQJ;?@eKHJHCKb4KMef M?Q¬<KMHCH?IgQCm#?RZXJ?¯QJXVrrM?IXJgcrQVH XV?RQVXVKMgHJ>HVHZMg²¯<dcLcbceIKzQJ?!d %²6~ 5ZOeeLcXJ?!dm#?IeIKoLHJ?ZoGKMef 6gcZzG?IdOr>?IgQ¬Zo< Lcef ?XbKef M?RQfH´ QV;c?g QV;c?ÀKMHQGXJ?QJXfKogHJ>@HVHZMgH<gZoQGQJXVrMrM?IXJ?!d^. MNM Âzáâ!ÍPO!Í.
(26) A. +&& 7H8 8
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(29) 3 #!f
(30) ! :<;?KMrZMXV¡QV;c> ;KMHCm#??IgQV?IHQJ?Id gHJ>¯LcKzQJZMg§³gQV;c?@?RNOb#?XV>@?gQ!´^©?@HLbcb4ZH?¯QJ;4KzQ eZMgO¥ g?IeQVZgHYHJ;KoXV?aK g #´G;c?SgcZ XVKMgdOZ> QJXfKzeaeXJZHJHJ?IH+Q¬QJ;c?¬gc m4?!eRZM>@?!HYeRZgcrM?!HUQV?Idm4N?!eKMLH? ZM2QJ;c? %§ '¬®%KMrZMXV¡QV;c>:<;c?XV?«H¬KHgcr?¯XJZLOQJ?IX¬G;cef;)>@bc?I>@?gQ ?QJ;c?IX¬m#?IHQ¥?R/ZMXJQ&\^]c®§ ZXa]c® _o . . . . !#". $'. 0. 3
(31) %$'&!* (& ) -02. <: ;??RNOb#?XV>@?gQfHSKoXV? XVLcgZz¤M?IX<QJ;c?g?RQUªZMXV HJ;cZzGgZMgr4#kOG:<;c?IXJ? HSKPHgcrM?XVZMLOQV?XGQV;KzQ¬H eXJZHJHJ?Id@m6TQJXfKzeSrM?g?XfKzQJ?!d@m6T}^~#PeRZMggc?IeRQJZMgHI2:<;c?SmKMgdOGd6QJ;Zo²QV;c?H;KMXJ?!d@gc dO?Ib4?IgdcH H bcXJZb4ZXQVZgKoMQJZSQJ;c?ªg6Lc>«m#?X n ZoeZMgcgc?!eQVZgHv:<;cH§b#?XV>@¡QfH§QVZ¬K¤ZMdXJLcggcgraQJ;?©?N6b#?XV?ge? geRZ>b?QJ?TLcg4dO?XRZz¤?XJ¥&bcXVZz¤6HJZMgc?!deIKMHJ?IHIv:<;? gc PQVHJ?+;KMH<gcZ@bcXVZMb4KorKoQJZMgPdc?KTM :<;c?IXJ?KMXJ?QJ;XJ?I??I¤M?HZo<eRZgcgc?IeRQJZMgHGQJ; ?!KMef; QJ>?Kdc¡/?XV?gQ gc KoQJ?g4eRTM:<;?gc KzQV?geT¢H?I¡QV;c?X 0.5 × L ´YZX 1 × L ´¾ZMX 1.5 × L G¡QV; L m#?gcrK ¤zKoXVT6gcr bKoXfKo>@?QJ?XZo¬QJ;c? ?NOb4?IXJ>@?gQI :<;c?]® _eZMgOrLcXfKzQJZMgHQV;c?ZMZzGgcr 2:<;c?XV?)KoXV? ;A A eRKMHVH?!H:<;c?)HJbKMegr m#?RQUª??IgeRKMHVH?!HYm#?IeIKoLHJ?aZo²dO/?XV?geKoQJZMgH©eZMgHQVKMgQ!v:<;?XV?aHªK XfKzQVZ ZM+ *gcZMQ¬;A A+m#?RQUª??Ig QV;c?XfHUQaKMgdQV;c? KMHQSeRKMHVH ³gQV;cH¬H?QSZo+?RNOb#?XV>@?IgQ!´ª? ¤zKoXVTQJ;?g6Lc>«m#?X ZoYeZMgcgc?!eQVZgHaKog4dPQV;c?KzQV?geTPbKMXVKM>¯¥ ?QJ?IX L G:<;cHa?IKdcHGQVZPKKoXVrM? g6Lc>¯m4?IXaZoYXV?IHJLcQVHGZgc?«n eKMgcgcZMQ¬H;Zz ?!KMHJTMI @?«;K¤?ef;cZHJ?g QJZ XV?bXJ?!H?IgQ¾QJ;c?CXJ?!HL¡QfH¾g?IKoXVTM´G¡QV;PgcZ;c?XfKoXfef;T¯m4?QU©?I?gPQJ;c?C?RNOb#?XV>@?gQfHF @ ?CZMXfdO?IX¾QV;c?Cdc¡¥ ?IXJ?IgQ©eRZgOrMLXVKoQJZMgH (n, L) HJZQJ;4KzQYQV;c?XV?aH¾KoggeXJ?!KMHJ?GZo/QJ;c? ,Ub#?XJZMXV>Koge.? -ÀXVKoQJ?´MQV>@?ZLOQVHI´ ?QVeM ¯XVZM> QJ;c?«\^]c®b#ZMgQaZo+¤6?I /¬g QJ;c?HVKo>@?rMXfKobc;§´O©?HJ;cZz QV;c?gm#ZoQV;QJ;c? b#?XJZMXV>Koge? ZmOQVKMg?IdG¡QV;\^]® KogdPQJ;c? b#?XJZMXV>Koge?ZMmOQfKogc?IdG¡QV;)]c® _o . 1$32 3 - /4&2
(32) 5$3- 6& . lvr6 H;cZzaH¾QJ;?K¤?XfKor?ag6Lc>«m#?X<Zo§QJ>?IZMLOQfH<?RNOb#?XV?IgeR?!dm6T}²~#PeZMgcgc?!eQVZgHvQGHªZm¤6ZMLH QV;KzQ¾QJ;c?¬gL>«m#?X¾ZM^QJ>@?ZMLcQVHYH©Zzª?X2GQJ;]® _GQJ;KMgG¡QV;\^]c®22:<;cH©H©Kog?RNOb#?IeRQJ?Id>@bcXVZz¤M?¥ >@?IgQYZmOQVKMg?Id@m6TQV;c?a>KoXV 6gcr HQJXfKzQV?rMT§Q¾H2>@b4ZXQfKogQ2QJZ gcZMQJ?GQV;KzQ2QV;c?ag6Lc>¯m4?IXYZo/QJ>@?ZLOQVH Ïà M Ï).
(33) }²~#
(34) P]® _ 16 14. timeouts. 12 10 8 6 4 RED EDS. 2 0 0. 100. 200. 300 experience. 400. 500. 600. 400. 500. 600. rapport EDS/RED. 2.5 2 1.5 1 0.5 0 0. 100. 200. 300 experience. lvrMLcXV? ?22: ZMb 2Y LKMgQV¡QUTPZo§QV>@?IZMLOQfHªZoQJQJZ>22XfKzQVZ]c®v_IM\^]c®2 GQJ; \^]c®ZXª]c®v_GH¾XV?KzQV¤?T«Zzm4?!eKMLH?S©?aL4H?CK¤M?IXJT¯?ReR?gQª¤M?XfHJZgZMª}²~#ÀeZMgHJdO?XVgr ZHVHªXJ?!eRZz¤?XVTO¾G;cef;H<QV;c?« _ %²6~ 5^¥³}²~#P¤?XfHZMg§ $ . - -+6",6&. lvr6p@H;cZzaH¾QJ;?K¤?XfKor?arMZ6ZOdObcLOQ<ZMmcQVKogc?!dPdOLcXVgcr«QV;c??RNOb#?XV>@?gQ!¬Hgcr@m#ZoQJ;\^]c® ZMXa]c®v_z´ QV;c?XGHGgcZ@>@bcXVZz¤M?I>@?gQI ( :<;c?XV?aHYgcZ¯>@bcXVZz¤M?I>@?gQYm4?!eKMLH?GgQV;cH© 6g4d@Zo²gc?QU©ZXJ /´MHJ?¤?XfKo}²~#eRZgcgc?!eQJZMg4HYeKMg LHJ?¬?e?IgQJT@QJ;c?Cgc?RQUªZMXV @KogdP©?eRZLcdgcZoQ<?RNOb#?IeQGKog>@bcXVZz¤M?I>@?gQ¾Zo§QJ;c?CLHJ?CHJ>@bcT G¡QV;K@>@KMXJ 6gcr@HUQVXVKoQJ?rTM ( :<;c?<ÀKMeRQ2QJ;KoQ2QJ;c?aHQVKMgdcKMXVddO?¤6KzQVZg¯H2Zz©?IXvHYdOL?<QJZQJ;?GXJ?!dOLeR?!dgL>«m#?X2Zo#QJ>@?ZLOQVH ÀHJ??¯QJ;c?gc?NQ HJ?IeQVZg4aKMgdQV;c?ÀKeQCQJ;KoQ¬QV;c?@HUQVXVKoQJ?rTbXJZMQJ?IeRQVHCeRZgcgc?IeRQJZMgH¬G;cef;>@?RQ HVHJLc?IH<Zgc?\M}/}HJZ6ZMgc?IXI. MNM Âzáâ!ÍPO!Í.
(35) +&& 7H8 8
(36) 8(D#) %'+ 0 +& *. quantite transferee. 60000 50000 40000 30000 20000 10000. RED EDS. 0 0. 200. 400. 600. 800 experience. 1000. 1200. 1400. 1600. 1200. 1400. 1600. 1.2 rapport EDS/RED. 1 0.8 0.6 0.4 0.2 0 0. 200. 400. 600. 800 experience. 1000. lvrLcXJ?p 2+: ZMb2Y L4KogQJQUTZovm6TQV?IHªQVXVKMgHU?IXJ?!d^ ª ZoQQVZM> 22XfKzQJZ]c® _!o\^]c®Y . . . &. ,+ + +
(37) &2
(38) - . lvrzjSHJ;cZz QV;c?ªHQVKMgdcKMXVddc?¤6KoQJZMgZMcQJ;?©g6Lc>¯m4?IX ZMm6TQV?IH QJXfKog4HU?IXJ?!dmTeZMgcg?IeQVZgHICXfKobc;H HJ;cZzQV;KzQGQV;c?HQVKog4dcKoXfddc?¤6KoQJZMg ZMmOQfKogc?IdGQJ;)]c® _H<Zz©?IXªQJ;KMg GQJ;)\^]c®Y
(39) G NE # £O>@KMXG©ZXJ HGeRZgdOLeRQJ?Id ZgPQVZMbZo+dO¡/?XV?gQSHJ?XV¤6e?CdO/?XV?gQJKzQVZgHJTOHUQV?>HI j !G;K¤?HJ??g¿QJ;c? gc??!d¢QVZ>KzQfef; ( :<;c?KoLOQV;cZMXfH«ZMabcXVZMb#ZMXJQJZMgKM©dO#?IXJ?IgQJKzQJ?!d¿HJ?XV¤eR?!H Ý; HUQVXJZgcrM?IX@¬Z6£ XJ?! LcXV?>@?IgQfH XVZM> QJ;??Igd6¥&QJZo¥?g4d¢¤6?IGb4ZgQHJgeR? bcXVZMb#ZMXJQJZMgKM¾dO#?IX¥ ?gQJKzQVZgdcZ?!HgcZoQbcXVZz¤6dO? KomHJZMLOQV?rLKoXfKogQJ?I?IHI ag KMdcKMbOQJ¤M? bcXVZoQVZ6eZM A !G;KMH@m#??Ig dO?IHJrMgc?!dPQVZPdOT6gKM>eKMTPHJ??IeRQaQJ;c?«m4?!HUQ¬eKHJHGKMgd QJ;?gbcXVZz¤6dO? KMgKMmHJZMLOQJ? rLKoXfKogQJ?I? gdO?IKT . . Ïà M Ï).
(40) }²~#
(41) P]® _. >. 9 8 7 ecart-type. 6 5 4 3 2 RED EDS. 1 0 0. 100. 200. 300 experience. 400. 500. 600. 500. 600. rapport EDS/RED. 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 0. 100. 200. 300 experience. 400. lvrMLcXV? j62Y: ZMb 2YHQVKMgdcKoXfdPdc?¤6KoQJZMg² ª ZoQJQJZ>22XfKzQVZ]c®v_IM\^]c®2 :<;c?}²~#¥-XV?gdOTPdO/?XV?gQJKzQV?IdH?IXJ¤6eR?!H©>KMXJ 6gcr ;!²H<mKH?!dPZgQV;c? HJKM>@?C<KT@QJZeZMgO¥ HdO?IXvHJ?XV¤6e?¾eRKMHVH?!H§KH§KamLcdOgcrCmcZOef CbcXVZoQJZOeZMH§eKMgLHJ?¾GQJ;K<gc?ªrMXfKogc?Id KdcKobcQVKzQVZg KorMZXJQJ;c>2:<;c? HJT6HQJ?I> H<m4KMHJ?IdZgQV;c?HUQfKogdKoXfd "()( 560 +)PHJ?XV¤6e?SG;c?IXJ? eKHJHJ?IH©rM?QGdc¡¥ ?XV?gQ¯dOXVZMb¢?¤?YbXJZmKomc¡QUTgcZdc?KT dO#?IXJ?IgQJKzQJZMg#:<;c?X«ZmO[U?IeRQJ¤M?H«HJ>@KMX QJZ LHHJge?PQV;c?TdOZ gZoQKo> KzQbcXVZz¤dOgcr HQJXVZMgrrML4KoXfKogQJ?I?IHmLOQ>@bcXVZz¤6gcrQJ;c?Zz¤?XfKo b4?IXZXJ>KMgeR?QV;c?TbcXVZz¤M?¬QJ;KoQªQV;c?TZMmOQfKog?IHVH<QV>@?ZLOQVHf ³gm#ZoQJ;¢eIKMHJ?IHI´^QJ;c?LgdO?XVTgcrHJ?XV¤eR?@dO#?IXJ?IgQJKzQJZMgKTM?XbcXVZz¤6dc?IHCbcXV¤6?IrM?IdeRKMHVHJ?IHI:<;c? KMXVef;¡QV?IeQVLcXV?IH¬>«LHQ m4?dO?IbcZzT?IdGQJ; KogKMeIeR?IHVHeRZgQVXJZvHJTOHUQV?> ÀZMX>KoXV gcr ;KMH¬QVZm#?dOZMgc? m6TPK¯QVXJLHQUªZMXJQJ;6Tm4ZXVdc?XG?gQV¡QUTc¾QJZ?IgHLXJ? K@eRZXVdOKo/LHJ? Zo+H?IXJ¤6eR?!H (. MNM Âzáâ!ÍPO!Í.
(42) +&& 7H8 8
(43) 8(D#) %'+ 0 +&. A!n. 'D !§q« K8P
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(45) g6LON *8!´2ª?PKoXV?PKoHJZrMZMgcrQVZ HQVKMXQQV;c?P>@bc?>@?gQVKoQJZMg¿ZMGQJ;c? bXJZMQJZOeRZ#bXJ?!H?IgQV?Idg QV;cHSKoXJQJeR?KMgd H?I?C;Zz(QaXJLcg4H<gXV?IKo^?M . . K I G #! A&! 1KoXV S>Kog²´2?XVgW2KzNcHJZMg²´Kogd @hDGef;KMXVd£QV?¤?gHI^}^~#PeRZMgrM?IHQJZMgeZMgQJXVZM&/³gQV?XVgc?RQ Da?I Lc?IHQSlcZX ©ZM>@>@?gQVHa\ ~)k j *cA´³gQV?XVgc?RQa½YgrMgc??IXJgcr: KH lZMXfeR?´ abcXV¾A >>>c 8k !£6QJ?¤?g ªKM M?M´©¨¬K¤6d ªKef /´ 1)KoXV ªKoXVHJZMg§´Y½YGTg ¨CK¤?IHI´ #;?gcr @KMgcr´ªKogd @KM¡QV?X @?HVH SgPKoXfef;cQJ?!eQJLXJ?<ZX©dO#?IXJ?IgQJKzQJ?!dHJ?XV¤eR?!H/³gQJ?IXJg?RQªDa?I Lc?IHQ©lZMX ©Z>@>?IgQVH<\ ~ kop MjO´6³gQJ?XVgc?Qa½YgcrMgc?I?XVgcr@:vKMHJ PlcZXVe?M´c¨¬?IeR?I>«m#?X ;A >>* ! ¨CKo;c ¥ 1gcr ©;cLKMgd%DaKo[ Kog² agKMTOHJH¯ZoSQJ;c?geRXV?IKH? KogddO?IeXJ?!KMHJ?KorMZXJQJ;>@HZMX eZMgcr?IHQJZMg¿K¤ZMdcKoge?geRZM>@bcLcQJ?X¯gc?RQUªZMXV OH 56+&0 +&
(46) 80 <8(8%_I® "( + (´ A OA! 2A /Ap4´ Lcgc?;A >*> p ! ¨CK¤6d¨¯ ©KMXJ //:<;c?SdO?!HrMg@bc;cZHJZMbc;6T«ZM/QJ;c?® %§\^ %gQJ?IXJgc?Q¾bcXVZoQVZ6eZMH#³g 0 ;#)+)+ 7 9 ( ,+)#D % +&0 +D() 0 85; L 56, #)
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(48) 80 <o´©;A -j 2Ý k A#:op4´ £O?bOQV?>«m#?X«A >>>c A ! ©ZgHQVKogQVgcZH2¨SZz¤6XVZMHvKog4d¯W2KMXVKM>?!H<KoXfKogDSKo>KogKoQJ;KMg²¨¬T6gKo>@eªeKHJH2HJ??IeRQJZMg 2 lcXVZM> XV?KzQV¤?dO#?IXJ?IgQVKoQJZMg QJZKomHJZMLOQJ? ZHI¾³g I0 #)+)+)8 7:98( &?+' +&0
(49) 8%( 8)D+&0 +&#)+. * +D
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(56) Unité de recherche INRIA Rhône-Alpes 655, avenue de l’Europe - 38330 Montbonnot-St-Martin (France) Unité de recherche INRIA Futurs : Domaine de Voluceau - Rocquencourt - BP 105 - 78153 Le Chesnay Cedex (France) Unité de recherche INRIA Lorraine : LORIA, Technopôle de Nancy-Brabois - Campus scientifique 615, rue du Jardin Botanique - BP 101 - 54602 Villers-lès-Nancy Cedex (France) Unité de recherche INRIA Rennes : IRISA, Campus universitaire de Beaulieu - 35042 Rennes Cedex (France) Unité de recherche INRIA Rocquencourt : Domaine de Voluceau - Rocquencourt - BP 105 - 78153 Le Chesnay Cedex (France) Unité de recherche INRIA Sophia Antipolis : 2004, route des Lucioles - BP 93 - 06902 Sophia Antipolis Cedex (France). Éditeur INRIA - Domaine de Voluceau - Rocquencourt, BP 105 - 78153 Le Chesnay Cedex (France).
(57). . ISSN 0249-6399.
(58)
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