A novel data caching scheme for multimedia servers

In this paper, we propose a Bi-directional Fragmental Pipelining (BFP) technique and its variable buffer size data-caching scheme BFP_V to reduce the disk I/O bandwidth requirement for multimedia servers. Our mathematical analysis shows that the BFP technique is superior to the traditional unidirectional pipelining technique in terms of memory buffer space requirement. We further demonstrate that the memory buffer management using BFP_V is better than that of using the fixed buffer size approach BFP_F. We have mathematically proved that BFP_V saves more disk I/O bandwidth than BFP_F does using the same memory buffer space. Our simulation results have quantitatively confirmed our analysis.