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dc.contributor.authorWest, Richarden_US
dc.contributor.authorSchwan, Karsten
dc.date.accessioned2005-06-17T17:49:13Z
dc.date.available2005-06-17T17:49:13Z
dc.date.issued1998en_US
dc.identifier.urihttp://hdl.handle.net/1853/6627
dc.description.abstractComplex distributed applications, including virtual environments, and real-time multimedia require performance guarantees in the end-to-end transfer of information across a network. To make such guarantees requires the management of processing, memory, and network resources. This paper describes the Dionisys end-system quality of service (QoS) approach to specifying, translating, and enforcing end-to-end, object-level QoS constraints. Dionisys differs from previous work on QoS architectures by supporting QoS constraints on distributed shared objects, as well as multimedia streams. Consequently, we introduce 'interactors', which capture the QoS constraints and resource requirements at each stage in the generation, processing, and transfer of information between multiple cooperating objects. Using interactors, Dionisys is able to coordinate both thread and packet-level scheduling, so that information is processed and transmitted at matching rates. However, there are tradeoffs in the use of CPU cycles for scheduling and the need to meet QoS constraints on the information transferred between interacting objects. We show, empirically, the packet scheduling frequency to minimize CPU overheads while maximizing bandwidth usage.en_US
dc.format.extent272410 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.publisherGeorgia Institute of Technologyen_US
dc.relation.ispartofseriesCC Technical Report; GIT-CC-98-03en_US
dc.subjectQuality of service
dc.subjectPerformance
dc.subjectNetwork resource management
dc.subjectDistributed Shared Objects (DSO)
dc.subjectStreaming multimedia
dc.subjectThread schedulers
dc.subjectPacket scheduling algorithms
dc.subjectBandwidth
dc.titleInteractors: Capturing Tradeoffs in Bandwidth Versus CPU Usage for Quality of Service Constrained Objectsen_US
dc.typeTechnical Reporteng_US


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