Project Description

Our project 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, our 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.

Full Publication List

2023

2022

2021

2020

2019

2018

2017

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)

  • Kisung Lee, Ling Liu, Raghu K. Ganti, Mudhakar Srivatsa, Qi Zhang, Yang Zhou, and Qingyang Wang, "Lightweight Indexing and Querying Services for Big Spatial Data." IEEE Transactions on Services Computing (TSC 2016)

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%)