Partha Kanuparthy - Dissertation

Diagnosing Performance Problems in Wide Area Providers

End-to-end Methods for Traffic Shaping Detection, Performance Problem Diagnosis, Home Wireless Troubleshooting

Finding Needles in the Haystack: Harnessing Syslogs for Data Center Management

Network device syslogs are ubiquitous and abundant in modern data centers with most large data centers producing millions of messages per day. Yet, the operational information reflected in syslogs and their implications on diagnosis or management tasks are poorly understood. Prevalent approaches to understanding syslogs focus on simple correlation and abnormality detection and are often limited...

DNS-based Ingress Load Balancing: An Experimental Evaluation

Multihomed services can load-balance their incoming connection requests using DNS, resolving the name of the server with different addresses depending on the link load that corresponds to each address. Previous work has studied a number of problems with this approach, e.g., due to Time-to-Live duration violations and client proximity to local DNS servers. In this paper, we experimentally evalua...

Pythia: Diagnosing Performance Problems in Wide Area Providers

Performance problem diagnosis is a critical part of network operations in ISPs. Service providers typically deploy monitoring nodes at several vantage points in their network, to record end-to-endmeasurements of network performance. Network operators use these measurements offline; for example, to troubleshoot customer complaints. In this work, we leverage such monitoring infrastructure deploym...