Title: A peer-to-peer IO buffering service based on RAM-grid

Authors: Yiming Zhang, Rui Chu, Dongsheng Li

Addresses: National Laboratory for Parallel and Distributed Processing, National University of Defense Technology, Changsha 410073, China. ' National Laboratory for Parallel and Distributed Processing, National University of Defense Technology, Changsha 410073, China. ' National Laboratory for Parallel and Distributed Processing, National University of Defense Technology, Changsha 410073, China

Abstract: The performance of IO-intensive applications is determined by the hit ratio of local disk cache and the IO latency of missed disk accesses. To improve the IO performance, in this paper we propose PIB, a peer-to-peer IO buffering service based on RAM-grid (a new grid system aiming at memory resource sharing in WAN). The PIB service acts as a two-level disk cache, which buffers obsolete blocks in idle nodes on the internet for IO-intensive applications. It reduces the IO latency of missed disk accesses by means of the speed advantage of network over disks, and improves the hit ratio of local cache based on accurate identification of IO patterns. The effectiveness of our proposals is demonstrated through the trace driven simulation studies.

Keywords: caching service; disk cache; hit ratio; IO intensive; IO patterns; network memory; PIB service; policy service; P2P; peer-to-peer; RAM-grid; grid computing; input-output buffering; memory resource sharing; WANs; wireless area networks; IO latency; missed disk accesses; simulation.

DOI: 10.1504/IJAACS.2009.029172

International Journal of Autonomous and Adaptive Communications Systems, 2009 Vol.2 No.4, pp.382 - 396

Available online: 08 Nov 2009 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article