A topology viewer for distributed brokering systems

In this paper we present a topology viewer for the NaradaBrokering system. The NaradaBrokering system comprises a distributed network of cooperating broker nodes organized within a logical overlay network. The topology viewer´s layout algorithm is implemented such that it augments the structure of the NaradaBrokering network. Furthermore, we believe that this approach could also be applied to similar visualization problems. Our visualization scheme extends recent work in the visualization of large hierarchies with primary focus on algorithmic and visual simplicity. Specifically, we have modified the ringed layout algorithm for placement of various NaradaBrokering components in order to achieve navigational efficiency. We also include performance measurements in this paper.