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SPECmail2009 is a new benchmark suite for measuring the performance of corporate mail servers. It assumes the IMAP4 protocol for retrieving messages and a large fraction of transactions are for manipulating hierarchical messages and mail folders from the users connected via high-speed networks. In this paper, we present a performance analysis of SPECmail2009, including disk I/O behavior, quality of...
The dominance of multimedia applications has increased with the emergence of high speed data networks. Among the multimedia applications, VoIP has placed itself in a strong position. However, the market is dominated by a number of VoIP applications with different architectural and protocol layouts. Therefore, analysis and comparison is necessary to understand their behavior and to define the QoS of...
Similar to conventional NAT technology, NAT-PT gateways break traditional TCP/IP's end-to-end argument property which result in IPSec can not be applied in NAT-PT environment, and would fall flat when the pool of IPv4 addresses is exhausted. A solution by adding IP transform message, modifying the address mapping tables and session tables, using port transform strategy with inner host computer character...
The purpose of Grid monitoring and management is to monitor services in Grid environment for fault detection, performance analysis, performance tuning, load balancing and scheduling. This paper emphasis on presenting a new framework namely iNet-Grid deployed for Grid monitoring and troubleshooting purposes. The iNet-Grid is integrated on top of Ganglia. iNet-Grid has been tested and successfully accomplished...
The IP-SAN based on third party transfer protocols comprises host(s), controller(s) and stores by extending the SCSI-3 transport layer to support distribution application. In the implemented architecture data may be sent directly between host and stores, passing all commands through the controller retains simplicity, relieving the controller communication bottleneck. A prototype IP-SAN using Ethernet...
Recently, Skype has been receiving considerable attention as a peer-to-peer (P2P) Internet telephony application. In Skype, a voice connection is established via super nodes chosen from among ordinary end-user nodes. User information such as an IP address and port number of an online Skype node is managed by super nodes in a decentralized manner where the number of super nodes changes dynamically...
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