Techniques for Update Handling in the Enhanced Client-Server DBMS
IEEE Transactions on Knowledge and Data Engineering
Distributed middleware architectures for scalable media services
Journal of Network and Computer Applications - Special issue: Network and information security: A computational intelligence approach
| Hi-index | 0.00 |
The size of data shipped over networks of distributed databases has increased substantially with the introduction of multimedia and high performance systems. Therefore, there is a need to understand the behavior and the trade-offs of available data communication abstractions in such settings. In this paper, we consider parameters associated with the abstractions, the impact of their implementation on throughput, and we compare the performance of BSD sockets (TCP, UDP), System V TLI (TCP), and SunOS RPCs (TCP) in the presence of large messages. In such environments, segmentation overhead of UDP messages at the user level outweighs other considerations such as optimal mbuf allocation and full ethernet bandwidth usage. In addition, it is found that the size of buffer areas allocated to TCP sockets gains further impedance when sending large messages. We also find that communication induced paging significantly deteriorates the data transmission throughput and suggest a policy to avoid this problem