Title of article :
On network CoProcessors for scalable, predictable media services
Author/Authors :
K.، Schwan, نويسنده , , R.، Krishnamurthy, نويسنده , , R.، West, نويسنده , , M.C.، Rosu, نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Abstract :
This paper presents the embedded realization and experimental evaluation of a media stream scheduler on network interface (NI) CoProcessor boards. When using media frames as scheduling units, the scheduler is able to operate in real-time on streams traversing the CoProcessor, resulting in its ability to stream video to remote clients at realtime rates. This paper presents a detailed evaluation of the effects of placing application or kernel-level functionality, like packet scheduling on NIs, rather than the host machines to which they are attached. The main benefits of such placement are: 1) that traffic is eliminated from the host bus and memory subsystem, thereby allowing increased host CPU utilization for other tasks, and 2) that NI-based scheduling is immune to host-CPU loading, unlike host-based media schedulers that are easily affected even by transient load conditions. An outcome of this work is a proposed cluster architecture for building scalable media servers by distributing schedulers and media stream producers across the multiple NIs used by a single server and by clustering a number of such servers using commodity network hardware and software.
Keywords :
perceived difficulty , self-efficacy , goal involvement , motivational climate
Journal title :
IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS
Journal title :
IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS