Qingyang Wang
  
Assistant Professor
Computer Science and Engineering Division
LSU, School of Electrical Engineering and Computer Science

Address: 325 Electrical Engineering Building
LSU, Baton Rouge, LA 70803
Phone: (225) 578-0959 (office)
E-Mail: qywang@csc

About Me

I am an assistant professor in the Department of Computer Science and Engineering at Louisiana State University. I received my Ph.D. degree in Computer Science from Georgia Tech in 2014. I received my M.E. degree from Chinese Academy of Sciences and B.E degree from Wuhan University in 2007 and 2004.

To prospective students: I'm always looking for students who share my research interests and have a solid background in computer systems. If you are interested, please e-mail me with your CV and transcripts.
 

Teaching
  • CS4610 Virtualization and Cloud Systems (Fall 2017, Fall 2016, Fall 2015)
  • CS4740 Big Data Technologies (Spring 2015)
  • CS2610 Cloud Fundamentals and Web Programming (Spring 2017, Spring 2016, Spring 2015, Fall 2014)
Research

My research is in distributed systems and cloud computing with a current focus on performance and scalability analysis of large-scale web applications (e.g., Amazon)

My research is motivated by the essential requirement of simultaneously achieving good performance and high utilization for cost efficiency in cloud computing environments. Good performance (e.g., fast response time) is critical for the business of e-commerce web applications like Amazon. High utilization through virtualization and hardware resource sharing is essential for cloud venders for high return on investment. However, both practitioners and researchers have experienced large response time fluctuations or unpredictable performance in cloud, especially when the utilization becomes high. To solve this problem, my research has been focusing on two aspects: first, investigate various system-level factors that cause the performance unpredictability of web applications running at high resource utilization; second, design, implement, and evaluate practical solutions to mitigate the negative impact of those factors and achieve the performance predictability at high resource utilization.

 
Publications

2017

  • Qingyang Wang, Chien-An Lai, Yasuhiko Kanemasa, Shungeng Zhang, and Calton Pu, “A Study of Long-Tail Latency in n-Tier Systems: RPC vs. Asynchronous Invocations”, to appear in the 37th International Conference on Distributed Computing Systems (ICDCS'17), Atlanta, GA, June 2017. (Acceptance rate: 90/531=16.9%)

  • Hui Chen, Qingyang Wang, Balaji Palanisamy, and Pengcheng Xiong, “DCM: Dynamic Concurrency Management for Scaling n-Tier Applications in Cloud”, to appear in the 37th International Conference on Distributed Computing Systems (ICDCS'17), Atlanta, GA, June 2017. (accepted as a short paper)

  • Chien-An Lai, Joshua Kimball, Tao Zhu, Qingyang Wang, and Calton Pu, “milliScope: a Fine-Grained Monitoring Framework for Performance Debugging of n-Tier Web Services", to appear in the 37th International Conference on Distributed Computing Systems (ICDCS'17), Atlanta, GA, June 2017. (Acceptance rate: 90/531=16.9%)

  • Tao Zhu, Jack Li, Josh Kimball, Junhee Park, Chien-An Lai, Calton Pu and Qingyang Wang, "Limitations of Load Balancing Mechanisms for N-Tier Systems in the Presence of Millibottlenecks", to appear in the 37th International Conference on Distributed Computing Systems (ICDCS'17), Atlanta, GA, June 2017. (Application track)

  • Chui-Hui Chiu, Dipak Kumar Singh, Qingyang Wang, and Seung-Jong Park, "Coflourish: An SDN-Assisted Coflow Scheduling Framework for Clouds", to appear in the 10th International Conference On Cloud Computing (Cloud'17), Honolulu, Hawaii, June 2017. (Acceptance rate: 18%)

  • Chui-Hui Chiu, Dipak Kumar Singh, Qingyang Wang, Kisung Lee, and Seung-Jong Park, "Minimal Coflow Routing and Scheduling in OpenFlow-based Cloud Storage Area Networks", to appear in the 10th International Conference On Cloud Computing (Cloud'17), Honolulu, Hawaii, June 2017.

  • Li Pan, Qingyang Wang, Liang Li, Shijun Liu, and Dahui Chen, "An Experimental Study of the Impact of vCPU Provisioning on the Performance of a 2-Tier Application Running in Cloud", to appear in the 10th International Conference On Cloud Computing (Cloud'17), Honolulu, Hawaii, June 2017. (Application track)

2016

  • Junhee Park, Qingyang Wang Jack Li, Chien-An Lai, Tao Zhu, Calton Pu, “Performance Interference of Memory Thrashing in Virtualized Cloud Environments: A Study of consolidated n-Tier Applications”, In Proc. of the 9th International Conference On Cloud Computing (Cloud'16), San Francisco, USA, July 2016. (Acceptance rate: 15%) (Runner-Up for Best Paper Award)

2015

  • Qi Fan, Qingyang Wang, “Performance Comparison of Web Servers with Different Architectures: A Case Study using High Concurrency Workload”, In Proc. of the 3rd IEEE Workshop on Hot Topics in Web Systems and Technologies (HotWeb'15), Washington, D.C., USA, November 2015.

  • Brian Peterson, Gerald Baumgartner, Qingyang Wang, “A Hybrid Cloud Framework for Scientific Computing”, In Proc. of the 8th International Conference On Cloud Computing (Cloud'15), New York City, USA, July 2015. (Acceptance rate: 15%)

2014

  • Jack Li, Qingyang Wang, Chien-An Lai, Junhee Park, Daisaku Yokoyama, Calton Pu, “The Impact of Software Resource Allocation on Consolidated n-Tier Applications”, In Proc. of the 7th International Conference On Cloud Computing (Cloud'14), Alaska, USA, June 2014.(Acceptance rate: 20%)

  • Chien-An Lai, Qingyang Wang, Josh Kimball,Jack Li, Junhee Park, Calton Pu, “IO Performance Interference among Consolidated n-Tier Applications: Sharing is Better than Isolation for Disks”, In Proc. of the 7th International Conference On Cloud Computing (Cloud'14), Alaska, USA June 2014.(Acceptance rate: 20%)

2013

2012

2011

Before 2011

  • Qingyang Wang, Jingshu Chen, Xibin Gao, Wei Zhou, Baoping Yan, “A New Architecture of Data Access Middleware under Grid Environment”, In Proc. of 1st Asia-Pacific Services Computing Conference (APSCC'06), September 2006.

  • Qingyang Wang, Deting Yang, Jingshu Chen, Xibing Gao, Baoping Yan, “Application of Universal Relation in the Data Access Middleware under Grid Environment”, In Proc. of the 20th CODATA international conference (CODATA’06), June 2006.

  • Jingshu Chen, Hong Wu, Qingyang Wang, “A reflective framework for authentication in Grid Computing Environments”, In Proc. of the 5th international conference on Grid and Cooperative Computing (GCC'06), October 2006.

Patents
  • Yasuhiko Kanemasa, Calton Pu, Qingyang Wang, “Computer Program, Method, and Information Processing Apparatus for Analyzing Performance of Computer System”, Appl. No. US 13/587,544, 2012.

  • Yasuhiko Kanemasa, Motoyuki Kawaba, Calton Pu, Qingyang Wang, “Information Processing Apparatus, Computer Program, and Method for Controlling Execution of Jobs”, Appl. No. US 13/597,507, 2012.

  • Yasuhiko Kanemasa, Motoyuki Kawaba, Calton Pu, Qingyang Wang, “Method, Computer Program, and Information Processing Apparatus for Analyzing Performance of Computer System”, Appl. No. US 13/373,047, 2011.

Recent Professional Activities
Experiences
Current Students
  • Hui Chen, PhD
  • Huasong Shan, PhD
  • Shungeng Zhang, PhD
  • Brian Peterson, PhD (co-advise with Dr. Gerald Baumgartner)
  • Chui Hui Chiu, PhD (co-advise with Dr. Seung-Jong Park)
  • Grant Bourque, B.S. 2016(expected)

Last Updated: March 8, 2016