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Using Pathchar to Estimate Internet Link Characteristics
  • Allen B. Downey, Franklin W. Olin College of Engineering
Document Type
Conference Proceeding
Publication Date
We evaluate pathchar, a tool that infers the characteristics of links along an Internet path (latency, bandwidth, queue delays). Looking at two example paths, we identify circumstances where pathchar is likely to succeed, and develop techniques to improve the accuracy of pathchar's estimates and reduce the time it takes to generate them. The most successful of these techniques is a form of adaptive data collection that reduces the number of measurements pathchar needs by more than 90% for some links.

© 1999 ACM. This article was published in ACM SIGCOMM'99 Proceedings of the Conference on Applications, Technologies, Architectures, and Protocols for Computer Communication, pp. 241-250 and may be found here.

Citation Information
Allen B. Downey. "Using Pathchar to Estimate Internet Link Characteristics" (1999)
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