Limin Wang

C.V. ([ps] [pdf])   Resume ([html] [text])   Publication List

I am a Ph.D. candidate in the Department of Computer Science at Princeton University , and a member of the Network Systems Group. I am graduating in 2003.

Project Links: [CoDeeN - A CDN on PlanetLab]  [Robust CDN],   [Vegas+REM: ns-2 code and Tar file]

Recent Publications

Conference Publications

Limin Wang, Vivek Pai and Larry Peterson. "The Effectiveness of Request Redirection on CDN Robustness". In Proceedings of the Fifth Symposium on Operating Systems Design and Implementation (OSDI'02), Boston, MA, December 2002. Presentation Slides.

Steven Low, Larry Peterson and Limin Wang. "Understanding TCP Vegas: A Duality Model". In Proceedings of SIGMETRICS 2001 . (June 2001). [ps, pdf]

Limin Wang, Fred Douglis and Michael Rabinovich. "Forwarding Requests Among Reverse Proxies". The 5th International Web Caching and Content Delivery Workshop, Poster Session. (May 2000) Also apear as AT&T Research Technical Report TD-4LKK5L. [ps] [pdf] [html]

Yuanyuan Zhou, Limin Wang, Douglas W. Clark, and Kai Li. "Thread Scheduling for Out-of-core Applications with Memory Server on Multicomputers". In Proceedings of the 6th Workshop on I/O in Parallel and Distributed Systems, IOPADS '99 . (May 1999) [ps]

Journal Publications

Steven Low, Larry Peterson and Limin Wang. "Understanding TCP Vegas: A Duality Model". Journal of the ACM (JACM) 49(2):207-235, (March 2002). [ps, pdf]

Research

Robust Networks

Explored the design space of request redirection strategies in Content Distribution Networks (CDNs). Proposed new algorithms that balance server load, locality and network proximity, achieving large improvement in system capacity over published CDN technology, while maintaining response latency low. Developed a new strategy unified with normal request handling to deal with flash crowds and Distributed Denial of Service (DDoS) attacks.
Project Links: [Robust CDN]

Designed and implemented a novel hybrid network-server simulator by combining NS-2 and Logsim. This simulator provides detailed model at both packet level and operating system level. Conducted detailed large scale simulations to evaluate different CDN request redirection schemes.

Used a duality model to study TCP Vegas as a distributed optimization problem, provided insights on how and why TCP Vegas achieves its resource utilization, smoothness and fairness properties. Also investigated remedies for Vegas' buffer occupancy problem.
Related Links: [Vegas+REM: ns-2 code and Package Tar file]

Summer intern at AT&T Labs Research , Florham Park, NJ (summer 1999). Mentors: Fred Douglis and Misha Rabinovich

Evaluated how forwarding requests among ISP's reverse proxies can save ISP's backbone bandwidth.

Scalable I/O project (July 1998 - May 1999)

Built a Distributed Memory Server using Virtual Memory Mapped Communication on Windows NT, using remote memory as virtual memory's backing store in a PC cluster enviroment.

Thread Scheduling with Memory Server on PC clusters and Intel Paragon. Combined fine grained thread scheduling and memory server to improve out-of-core applications' performance.

Networklab of PKU's CS Department Peking University (February 1997 - July 1997).

WWW resource searching, indexing and query processing. http://e.pku.edu.cn/enindex.htm

Teaching

Teaching Assistant: COS 496: Information Security, Spring 1999.

Teaching Assistant: COS 471: Computer Architecture and Organization , Fall 1998