Pushing the limits of CAN - scheduling frames with offsets provides a major performance boost
Identifieur interne : 003E59 ( Hal/Curation ); précédent : 003E58; suivant : 003E60Pushing the limits of CAN - scheduling frames with offsets provides a major performance boost
Auteurs : Mathieu Grenier [France] ; Lionel Havet [France] ; Nicolas Navet [France]Source :
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Abstract
With the increasing amount of electronics, making best usage of the bandwidth becomes of primary importance in automotive networks. One solution that is being investigated by car manufacturers is to schedule the messages with offsets, which leads to a desynchronization of the message streams. As it will be shown, this “traffic shaping” strategy is very beneficial in terms of worst-case response times. In this chapter, the problem of choosing the best offsets is addressed in the case of Controller Area Network, which is a de-facto standard in the automotive world. Comprehensive experiments shown in this chapter give insight into the fundamental reasons why offsets are efficient, and demonstrate that offsets actually provide a major performance boost in terms of response times. These experimental results suggest that sound offset strategies may extend the lifespan of CAN further, and may defer the introduction of FlexRay and additional CAN networks.
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One solution that is being investigated by car manufacturers is to schedule the messages with offsets, which leads to a desynchronization of the message streams. As it will be shown, this “traffic shaping” strategy is very beneficial in terms of worst-case response times. In this chapter, the problem of choosing the best offsets is addressed in the case of Controller Area Network, which is a de-facto standard in the automotive world. Comprehensive experiments shown in this chapter give insight into the fundamental reasons why offsets are efficient, and demonstrate that offsets actually provide a major performance boost in terms of response times. These experimental results suggest that sound offset strategies may extend the lifespan of CAN further, and may defer the introduction of FlexRay and additional CAN networks.</div></front></TEI><hal api="V3"><titleStmt><title xml:lang="en">Pushing the limits of CAN - scheduling frames with offsets provides a major performance boost</title><author role="aut"><persName><forename type="first">Mathieu</forename><surname>Grenier</surname></persName><email>mathieu.grenier@loria.fr</email><idno type="halauthor">61380</idno><affiliation ref="#struct-2406"></affiliation></author><author role="aut"><persName><forename type="first">Lionel</forename><surname>Havet</surname></persName><email></email><idno type="halauthor">227015</idno><affiliation ref="#struct-2406"></affiliation></author><author role="aut"><persName><forename type="first">Nicolas</forename><surname>Navet</surname></persName><email>nnavet@loria.fr</email><idno type="halauthor">61381</idno><affiliation ref="#struct-2406"></affiliation></author><editor role="depositor"><persName><forename>Nicolas</forename><surname>Navet</surname></persName><email>nnavet@loria.fr</email></editor></titleStmt><editionStmt><edition n="v1" type="current"><date type="whenSubmitted">2008-04-16 17:32:51</date><date type="whenModified">2016-05-19 01:09:19</date><date type="whenReleased">2008-04-16 17:36:06</date><date type="whenProduced">2008</date><date type="whenEndEmbargoed">2008-04-16</date><ref type="file" target="https://hal.inria.fr/inria-00273946/document"><date notBefore="2008-04-16"></date></ref><ref type="file" subtype="author" n="1" target="https://hal.inria.fr/inria-00273946/file/erts2008_offsets.pdf"><date notBefore="2008-04-16"></date></ref><ref type="annex" subtype="other" n="0" target="https://hal.inria.fr/inria-00273946/file/offsetsERTS.pps"><date notBefore="2008-04-16"></date></ref></edition><respStmt><resp>contributor</resp><name key="103730"><persName><forename>Nicolas</forename><surname>Navet</surname></persName><email>nnavet@loria.fr</email></name></respStmt></editionStmt><publicationStmt><distributor>CCSD</distributor><idno type="halId">inria-00273946</idno><idno type="halUri">https://hal.inria.fr/inria-00273946</idno><idno type="halBibtex">grenier:inria-00273946</idno><idno type="halRefHtml">4th European Congress on Embedded Real Time Software (ERTS 2008), 2008, Toulouse, France. 2008</idno><idno type="halRef">4th European Congress on Embedded Real Time Software (ERTS 2008), 2008, Toulouse, France. 2008</idno></publicationStmt><seriesStmt><idno type="stamp" n="CNRS">CNRS - Centre national de la recherche scientifique</idno><idno type="stamp" n="INRIA">INRIA - Institut National de Recherche en Informatique et en Automatique</idno><idno type="stamp" n="INPL">Institut National Polytechnique de Lorraine</idno><idno type="stamp" n="LORIA2">Publications du LORIA</idno><idno type="stamp" n="INRIA-NANCY-GRAND-EST">INRIA Nancy - Grand Est</idno><idno type="stamp" n="LORIA">LORIA - Laboratoire Lorrain de Recherche en Informatique et ses Applications</idno><idno type="stamp" n="LORIA-NSS" p="LORIA">Réseaux, systèmes et services</idno><idno type="stamp" n="UNIV-LORRAINE">Université de Lorraine</idno><idno type="stamp" n="INRIA-LORRAINE">INRIA Nancy - Grand Est</idno><idno type="stamp" n="LABO-LORIA-SET" p="LORIA">LABO-LORIA-SET</idno></seriesStmt><notesStmt><note type="audience" n="2">International</note><note type="invited" n="0">No</note><note type="popular" n="0">No</note><note type="peer" n="1">Yes</note><note type="proceedings" n="1">Yes</note></notesStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Pushing the limits of CAN - scheduling frames with offsets provides a major performance boost</title><author role="aut"><persName><forename type="first">Mathieu</forename><surname>Grenier</surname></persName><email>mathieu.grenier@loria.fr</email><idno type="halAuthorId">61380</idno><affiliation ref="#struct-2406"></affiliation></author><author role="aut"><persName><forename type="first">Lionel</forename><surname>Havet</surname></persName><idno type="halAuthorId">227015</idno><affiliation ref="#struct-2406"></affiliation></author><author role="aut"><persName><forename type="first">Nicolas</forename><surname>Navet</surname></persName><email>nnavet@loria.fr</email><idno type="halAuthorId">61381</idno><affiliation ref="#struct-2406"></affiliation></author></analytic><monogr><meeting><title>4th European Congress on Embedded Real Time Software (ERTS 2008)</title><date type="start">2008</date><settlement>Toulouse</settlement><country key="FR">France</country></meeting><imprint><date type="datePub">2008</date></imprint></monogr></biblStruct></sourceDesc><profileDesc><langUsage><language ident="en">English</language></langUsage><textClass><keywords scheme="author"><term xml:lang="en">Controller Area Network</term><term xml:lang="en">message scheduling</term><term xml:lang="en">offsets</term><term xml:lang="en">response times</term><term xml:lang="en">resource optimization</term></keywords><classCode scheme="acm" n="J.7.6"></classCode><classCode scheme="acm" n="J.7.0"></classCode><classCode scheme="acm" n="J.2.6"></classCode><classCode scheme="halDomain" n="info.info-ds">Computer Science [cs]/Data Structures and Algorithms [cs.DS]</classCode><classCode scheme="halDomain" n="info.info-es">Computer Science [cs]/Embedded Systems</classCode><classCode scheme="halDomain" n="info.info-ni">Computer Science [cs]/Networking and Internet Architecture [cs.NI]</classCode><classCode scheme="halTypology" n="COMM">Conference papers</classCode></textClass><abstract xml:lang="en">With the increasing amount of electronics, making best usage of the bandwidth becomes of primary importance in automotive networks. One solution that is being investigated by car manufacturers is to schedule the messages with offsets, which leads to a desynchronization of the message streams. As it will be shown, this “traffic shaping” strategy is very beneficial in terms of worst-case response times. In this chapter, the problem of choosing the best offsets is addressed in the case of Controller Area Network, which is a de-facto standard in the automotive world. Comprehensive experiments shown in this chapter give insight into the fundamental reasons why offsets are efficient, and demonstrate that offsets actually provide a major performance boost in terms of response times. These experimental results suggest that sound offset strategies may extend the lifespan of CAN further, and may defer the introduction of FlexRay and additional CAN networks.</abstract></profileDesc></hal></record>Pour manipuler ce document sous Unix (Dilib)
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