and Anindya Neogi,
second year Ph.D. students
SUNY at Stony Brook, Computer Science Department
$21,000 on 2/12/97
To provide a student stipend for 18 months for a project to modify
the file system under FreeBSD to provide special support for interactive
Multimedia File System Abstract
MMFS extends the UNIX File System (UFS) specifically to support interactive
multimedia applications. MMFS supports a two-dimensional file structure
for single-medium editing and multiple-media playback environments. The
API allows the communication of application-specific information to MMFS
for performance optimization.
MMFS significantly improves interactive playback
performance by supporting intelligent prefetching and state-based caching,
prioritized real-time disk scheduling, and synchronized multi-stream retrieval.
In addition to improved response time for VCR-like playback modes, the
MMFS optimizations lead to minimal synchronization skew during multi-stream
retrievals, and orders-of-magnitude reduction in response time for editing
operations, when compared to UFS.
Current Status as of 3/98
A local disk-based MMFS has been completed, together with a video editor
that exploits MMFS's features. Continuing to work on the network extension