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A New View on What Limits TCP/IP Throughput in Local Area Networks

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dc.contributor.authorAbrams, Marcen
dc.contributor.authorChen, Qi-Fanen
dc.contributor.departmentComputer Scienceen
dc.date.accessioned2013-06-19T14:36:22Zen
dc.date.available2013-06-19T14:36:22Zen
dc.date.issued1991en
dc.description.abstractThis paper presents experimental results on what limits local area network throughput at the application program level for two popular transport protocols, TCP and UDP, using two application program interfaces, Berkeley sockets and System V transport layer interface. The sensitivity of application-level performance to the choice of host computer speed and background load on the host are also studied. Two sets of measurements are discussed. The first contains macroscopic measurement of throughput on 68020, 68030, 68040, 80386, SPARC, and MIPS R2000 and R3000 based computers over a single Ethernet subnet. The second presents a detailed timing analysis using a hardware monitor of a TCP/IP implementation for PC architecture computers. Previous studies implicate memory copying, checksumming, and the operating system interface as the major overheads in TCP/IP, rather than the time required to execute the protocol itself. This study indicates that these factors are secondary when the sender and receiver are closely matched in speed; rather the primary bottleneck is the TCP flow control mechanism. TCP flow control becomes closer to optimal as the degree of speed mismatch increases. We draw conclusions on why window mechanisms should be augmented by rate based flow control in the new generation of high data rate networks.en
dc.format.mimetypeapplication/pdfen
dc.identifierhttp://eprints.cs.vt.edu/archive/00000268/en
dc.identifier.sourceurlhttp://eprints.cs.vt.edu/archive/00000268/01/TR-91-23.pdfen
dc.identifier.trnumberTR-91-23en
dc.identifier.urihttp://hdl.handle.net/10919/19675en
dc.language.isoenen
dc.publisherDepartment of Computer Science, Virginia Polytechnic Institute & State Universityen
dc.relation.ispartofHistorical Collection(Till Dec 2001)en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.titleA New View on What Limits TCP/IP Throughput in Local Area Networksen
dc.typeTechnical reporten
dc.type.dcmitypeTexten

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