I'm a post doctoral fellow in the Carnegie Mellon School of Computer Science. Previously I graduated with a Ph.D. from Purdue University and I was part of the Internet Systems Lab led by Prof.Sanjay Rao. My research interests are broadly in Computer Networking and Systems, specifically Mobile Web, Cellular Networks, CDNs and Cloud Computing. Prior to joining Purdue, I worked for 3 years as a software development engineer in Cisco Systems, India. I received a bachelors degree in Electrical Engineering from Anna University (Madras Institute of Technology campus), Chennai, India. I have interned in AT&T Labs - Research thrice during Ph.D.
An eternal quest to reduce application latencies has been a prevalant theme for decades in networking research and it is the guiding principle behind my research as well. In recent years, owing to the dramatic increase in cellular users, it has become imperative for service providers to provide better quality of experience for their users. To that end, my dissertation work develops systems and techniques to improve Mobile Web performance by optimizing last-mile network delays that dominate page load latencies in cellular settings. Specifically, a proxy based system design that judiciously refactors browsing functionality between a proxy (inside the cellular network) and a client as well as develop techniques to make the proxy design scale to millions of users by reducing its computational overhead. Further, my work improves Web latencies optimizing the other constituent layers such as CDNs (content-delivery networks) and back-end data storage layer which are relevant in non-cellular settings.
Detailed description of the research projects here (Yet to be updated)
- "NutShell : Scalable Whittled Proxy Execution for Low-Latency Web over Cellular Networks", [One Minute Video]
Ashiwan Sivakumar, Chuan Jiang, Yun Seong Nam, Shankaranarayanan P.N., Vijay Gopalakrishnan, Sanjay Rao, Subhabrata Sen, Mithuna Thottethodi, Vijaykumar T.N.
Proc. ACM MOBICOM, 2017. [Talk Slides]
- "Reducing latency through page-aware management of web objects by Content Delivery Networks",
Shankaranarayanan P.N., Yun Seong Nam, Ashiwan Sivakumar, Balakrishnan Chandrasekaran, Bruce Maggs, Sanjay Rao
Proc. ACM SIGMETRICS, 2016.
- "Measuring and characterizing the performance of interactive multi-tier cloud applications" (Invited talk),
Mohammad Hajjat, Shankaranayanan P.N., Ashiwan Sivakumar, Sanjay Rao
Proc. IEEE LANMAN, 2015. [Talk Slides]
- "PARCEL: Proxy Assisted bRowsing in Cellular networks for Energy and Latency reduction",
Ashiwan Sivakumar, Shankaranarayanan P.N., Vijay Gopalakrishnan, Seungjoon Lee, Sanjay Rao and Subhabrata Sen
Proc. ACM CoNEXT, 2014. [Talk Slides]
- "Cloud is not a silver bullet: A case study of cloud-based mobile browsing",
Ashiwan Sivakumar, Vijay Gopalakrishnan, Seungjoon Lee, Sanjay Rao, Subhabrata Sen and Oliver Spatscheck
Proc. ACM HotMobile, 2014. [Talk Slides]
- "Performance Sensitive Replication in Geo-distributed Cloud Datastores",
Shankaranarayanan P.N., Ashiwan Sivakumar, Sanjay Rao and Mohit Tawarmalani
Proc. IEEE/IFIP DSN, 2014.
- "Closer to the Cloud - A Case for Emulating Cloud Dynamics by Controlling the Environment",
Ashiwan Sivakumar, Shankaranarayanan P N and Sanjay Rao
Proc. First GENI Research and Educational Experiment Workshop, 2012. [Talk Slides]