Introducing high performance distributed logging service for ACS
Identifieur interne : 000A99 ( Main/Exploration ); précédent : 000A98; suivant : 000B00Introducing high performance distributed logging service for ACS
Auteurs : Jorge A. Avarias [États-Unis] ; Joao S. Lopez [Chili] ; Cristian Maureira [Chili] ; Heiko Sommer [Allemagne] ; Gianluca Chiozzi [Allemagne]Source :
- Proceedings of SPIE, the International Society for Optical Engineering [ 0277-786X ] ; 2010.
Descripteurs français
- Pascal (Inist)
English descriptors
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Abstract
The ALMA Common Software (ACS) is a software framework that provides the infrastructure for the Atacama Large Millimeter Array and other projects. ACS, based on CORBA, offers basic services and common design patterns for distributed software. Every properly built system needs to be able to log status and error information. Logging in a single computer scenario can be as easy as using fprintf statements. However, in a distributed system, it must provide a way to centralize all logging data in a single place without overloading the network nor complicating the applications. ACS provides a complete logging service infrastructure in which every log has an associated priority and timestamp, allowing filtering at different levels of the system (application, service and clients). Currently the ACS logging service uses an implementation of the CORBA Telecom Log Service in a customized way, using only a minimal subset of the features provided by the standard. The most relevant feature used by ACS is the ability to treat the logs as event data that gets distributed over the network in a publisher-subscriber paradigm. For this purpose the CORBA Notification Service, which is resource intensive, is used. On the other hand, the Data Distribution Service (DDS) provides an alternative standard for publisher-subscriber communication for real-time systems, offering better performance and featuring decentralized message processing. The current document describes how the new high performance logging service of ACS has been modeled and developed using DDS, replacing the Telecom Log Service. Benefits and drawbacks are analyzed. A benchmark is presented comparing the differences between the implementations.
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Eng.</title><idno type="ISSN">0277-786X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Customization</term><term>Data distribution</term><term>Data logging</term><term>Date</term><term>Design pattern</term><term>Distributed algorithm</term><term>Distributed system</term><term>Filtering</term><term>High performance</term><term>Log file</term><term>Metamodel</term><term>Modeling</term><term>Notices</term><term>Overload</term><term>Real time</term><term>Reuse</term><term>Service oriented</term><term>Software component</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Haute performance</term><term>Composant logiciel</term><term>Réutilisation</term><term>Patron conception</term><term>Système réparti</term><term>Enregistrement donnée</term><term>Notification</term><term>Orienté service</term><term>Temps réel</term><term>Surcharge</term><term>Date</term><term>Personnalisation</term><term>Fichier log</term><term>Distribution donnée</term><term>Métamodèle</term><term>Algorithme réparti</term><term>Filtrage</term><term>Modélisation</term><term>.</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The ALMA Common Software (ACS) is a software framework that provides the infrastructure for the Atacama Large Millimeter Array and other projects. ACS, based on CORBA, offers basic services and common design patterns for distributed software. Every properly built system needs to be able to log status and error information. Logging in a single computer scenario can be as easy as using fprintf statements. However, in a distributed system, it must provide a way to centralize all logging data in a single place without overloading the network nor complicating the applications. ACS provides a complete logging service infrastructure in which every log has an associated priority and timestamp, allowing filtering at different levels of the system (application, service and clients). Currently the ACS logging service uses an implementation of the CORBA Telecom Log Service in a customized way, using only a minimal subset of the features provided by the standard. The most relevant feature used by ACS is the ability to treat the logs as event data that gets distributed over the network in a publisher-subscriber paradigm. For this purpose the CORBA Notification Service, which is resource intensive, is used. On the other hand, the Data Distribution Service (DDS) provides an alternative standard for publisher-subscriber communication for real-time systems, offering better performance and featuring decentralized message processing. The current document describes how the new high performance logging service of ACS has been modeled and developed using DDS, replacing the Telecom Log Service. Benefits and drawbacks are analyzed. A benchmark is presented comparing the differences between the implementations.</div></front></TEI><affiliations><list><country><li>Allemagne</li><li>Chili</li><li>États-Unis</li></country><region><li>Nouveau-Mexique</li></region></list><tree><country name="États-Unis"><region name="Nouveau-Mexique"><name sortKey="Avarias, Jorge A" sort="Avarias, Jorge A" uniqKey="Avarias J" first="Jorge A." last="Avarias">Jorge A. Avarias</name></region></country><country name="Chili"><noRegion><name sortKey="Lopez, Joao S" sort="Lopez, Joao S" uniqKey="Lopez J" first="Joao S." last="Lopez">Joao S. Lopez</name></noRegion><name sortKey="Maureira, Cristian" sort="Maureira, Cristian" uniqKey="Maureira C" first="Cristian" last="Maureira">Cristian Maureira</name></country><country name="Allemagne"><noRegion><name sortKey="Sommer, Heiko" sort="Sommer, Heiko" uniqKey="Sommer H" first="Heiko" last="Sommer">Heiko Sommer</name></noRegion><name sortKey="Chiozzi, Gianluca" sort="Chiozzi, Gianluca" uniqKey="Chiozzi G" first="Gianluca" last="Chiozzi">Gianluca Chiozzi</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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