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VMedia: Enhanced Multimedia Services in Virtualized Systems


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This paper presents the VMedia multimedia virtualization framework, for sharing media devices among multiplevirtual machines VMs. The framework provides logical media devices to virtual machines. These devices areexported via a well defined, higher level, multimedia access interface to the applications and operating systemrunning in a virtual machine. By using semantically meaningful information, rather than low-level raw data,within the VMedia framework, efficient virtualization solutions can be created for physical devices shared bymultiple virtual machines. Experimental results demonstrate that the base cost of virtual device access viaVMedia is small compared to native physical device access, and in addition, that these costs scale well with anincreasing number of guest VMs. Here, VMedia’s MediaGraph abstraction is a key contributor, since it also allowsthe framework to support dynamic restructuring, in order to adapt device accesses to changing requirements.Finally, VMedia permits platforms to offer new and enhanced logical device functionality at lower costs thanthose achievable with alternative solutions.



CERCS Technical Reports -



Autor: Raj, Himanshu - Seshasayee, Balasubramanian - Schwan, Karsten - -

Fuente: https://smartech.gatech.edu/



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