Performance Evaluation of Media Losses in the Continuous Media Toolkit
Abstract
This paper shows a methodology for user driven, top down approach to research in quality of service Issues in multimedia systems. As a case study, we show a development of metrics, validation by means of a user study, and a performance evaluation of prototyping environments. What is used, the Berkeley Continuous Media Toolkit (CMT), is a popular environment that satisfies this need. From a human user's perspective, in order for multimedia demonstrations to be comprehensible, the number of audio or video frames dropped and the timing delays in the ones that are displayed, need to be kept to a minimum. Therefore, it is important to know the frame dropping characteristics of CMT. In a series of experiments we monitored the variation of these parameters with respect to processor and network loads. It was observed that loads affect aggregate frame drops at lower rates and consecutive frame drops at higher rates. because at higher rates a large number of consecutive frames are dropped, the ones that are played appear in a more timely manned. As a solution to observed problems, we present som QoS based approaches to control drop and delay paramenters.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1998
- Accession Number
- ADA344178
Entities
People
- A. Nerode
- D. Wijesekera
- J. Srivastava
- S. Parikh
- S. Varadarajan
Organizations
- University of California, Berkeley