About: Scalable TCP

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Type of Transmission Control Protocol which is designed to provide much higher throughput and scalability. Standard TCP recommendations as per RFC 2581 and RFC 5681 call for congestion window to be halved for each packet lost. Effectively, this process keeps halving the throughput until packet loss stops. Once the packet loss subsides, slow start kicks in to ramp the speed back up. When the window sizes are small, say 1 Mbit/s @ 200 ms round trip time and the window is about 20 packets, this recovery time is quite fast—on the order of a few seconds. But as transfer speeds approach 1 Gbit/s, the recovery time becomes half an hour and for 10 Gbit/s it's over 4 hours.

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rdf:type	yago:WikicatTransportLayerProtocols yago:Abstraction100002137 yago:Communication100033020 yago:Direction106786629 yago:Message106598915 yago:Protocol106665108 yago:WikicatInternetProtocols yago:Rule106652242
rdfs:label	Scalable TCP (en)
rdfs:comment	Type of Transmission Control Protocol which is designed to provide much higher throughput and scalability. Standard TCP recommendations as per RFC 2581 and RFC 5681 call for congestion window to be halved for each packet lost. Effectively, this process keeps halving the throughput until packet loss stops. Once the packet loss subsides, slow start kicks in to ramp the speed back up. When the window sizes are small, say 1 Mbit/s @ 200 ms round trip time and the window is about 20 packets, this recovery time is quite fast—on the order of a few seconds. But as transfer speeds approach 1 Gbit/s, the recovery time becomes half an hour and for 10 Gbit/s it's over 4 hours. (en)
dcterms:subject	Internet protocols Transport layer protocols TCP congestion control
Wikipage page ID	6979594 (xsd:integer)
Wikipage revision ID	1087932936 (xsd:integer)
Link from a Wikipage to another Wikipage	Packet loss Internet protocols UDP-based Data Transfer Protocol Transmission Control Protocol Network congestion Transport layer protocols TCP congestion control Scalability
Link from a Wikipage to an external page	http://datatag.web.cern.ch/datatag/papers/pfldnet2003-ctk.pdf https://onlinevideodownloaders.com/ http://tools.ietf.org/html/rfc2581 http://tools.ietf.org/html/rfc5681 http://www.csm.ornl.gov/~dunigan/net100/kelly.html https://web.archive.org/web/20200201204234/http:/www.deneholme.net/tom/scalable/
sameAs	Scalable TCP Scalable TCP Scalable TCP Scalable TCP
dbp:wikiPageUsesTemplate	dbt:Compu-sci-stub
has abstract	Type of Transmission Control Protocol which is designed to provide much higher throughput and scalability. Standard TCP recommendations as per RFC 2581 and RFC 5681 call for congestion window to be halved for each packet lost. Effectively, this process keeps halving the throughput until packet loss stops. Once the packet loss subsides, slow start kicks in to ramp the speed back up. When the window sizes are small, say 1 Mbit/s @ 200 ms round trip time and the window is about 20 packets, this recovery time is quite fast—on the order of a few seconds. But as transfer speeds approach 1 Gbit/s, the recovery time becomes half an hour and for 10 Gbit/s it's over 4 hours. Scalable TCP modifies the congestion control algorithm. Instead of halving the congestion window size, each packet loss decreases the congestion window by a small fraction (a factor of 1/8 instead of Standard TCP's 1/2) until packet loss stops. When packet loss stops, the rate is ramped up at a slow fixed rate (one packet is added for every one hundred successful acknowledgements) instead of the Standard TCP rate that's the inverse of the congestion window size (thus very large windows take a long time to recover). This helps reduce the recovery time on 10 Gbit/s links from 4+ hours (using Standard TCP) to less than 15 seconds when the round trip time is 200 milliseconds. (en)
prov:wasDerivedFrom	wikipedia-en:Scalable_TCP?oldid=1087932936&ns=0
page length (characters) of wiki page	2454 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Scalable_TCP
is Link from a Wikipage to another Wikipage of	Additive increase/multiplicative decrease STCP TCP congestion control Scalable Transmission Control Protocol
is Wikipage redirect of	Scalable Transmission Control Protocol
is foaf:primaryTopic of	wikipedia-en:Scalable_TCP

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