Research

My research interests are computer networking and systems. In particular, recently I have focused on data center networking, networking for AI and machine learning systems.

Selected Publications（代表性论文）

Complete publication list: Google Scholar

* student mentored by me;    # (co)corresponding author

1. SGLB: Scalable and Robust Global Load Balancing in Commodity AI Clusters
   Chenchen Qi, Wenfei Wu, Yongcan Wang, Keqiang He#, Zongying He, Chen-Yu Yen, Yu-Hsiang (Sean) Kao, Zhuo Jiang, Feng Luo, Surendra Anubolu, Yanjin Gao, Bingfeng Lin, Wenda Ni, Yiming Yang, Donglin Wei, Boyang Zhou, Jian Wang, Shan Ding
   SIGCOMM 2025

2. Enabling Virtual Priority in Data Center Congestion Control
   Zhaochen Zhang, Feiyang Xue, Keqiang He, Zhimeng Yin, Gianni Antichi, Jiaqi Gao, Yizhi Wang, Rui Ning, Haixin Nan, Xu Zhang, Peirui Cao, Xiaoliang Wang, Wanchun Dou, Guihai Chen, Chen Tian
   EuroSys 2025

3. Marlin: Enabling High-Throughput Congestion Control Testing in Large-Scale Networks
   Yanqing Chen, Li Wang, Jingzhi Wang, Songyue Liu, Keqiang He, Jian Wang, Xiaoliang Wang, Wanchun Dou, Guihai Chen, Chen Tian
   EuroSys 2025

4. FlowGram: Resource Allocation for Network Flow Measurement in Clouds
   Chenqi Zhao, Wenfei Wu, Qun Huang, Keqiang He
   IWQoS 2025

5. Precise Data Center Traffic Engineering with Constrained Hardware Resources
   Shawn Chen*, Keqiang He, Rui Wang, Srinivasan Seshan, Peter Steenkiste
   NSDI 2024

6. Balancing SDN Control Plane Availability and Traffic Engineering Efficiency in Data Centers
   Brian Chang*, Keqiang He, Shawn Chen, Jiaxin Lin, Mingyang Zhang, Wenfei Wu, Aditya Akella
   ICNP 2024

7. Hashing Design in Modern Networks: Challenges and Mitigation Techniques
   Yunhong Xu*, Keqiang He, Rui Wang, Minlan Yu, Nick Duffield, Hassan Wassel, Shidong Zhang, Leon Poutievski, Junlan Zhou and Amin Vahdat
   ATC 2022

8. AC/DC TCP: Virtual Congestion Control Enforcement for Datacenter Networks
   Keqiang He, Eric Rozner, Kanak Agarwal, Yu (Jason) Gu, Wes Felter, John Carter, Aditya Akella
   SIGCOMM 2016

9. PerfSight: Performance Diagnosis for Software Dataplanes
   Wenfei Wu, Keqiang He and Aditya Akella
   IMC 2015

10. Measuring Control Plane Latency in SDN-enabled Switches
    Keqiang He, Junaid Khalid, Aaron Gember-Jacobson, Sourav Das, Chaithan Prakash, Aditya Akella, Li Erran Li, Marina Thottan
    SIGCOMM Symposium on SDN Research 2015

11. Latency in Software Defined Networks: Measurements and Mitigation Techniques
    Keqiang He, Junaid Khalid, Aaron Gember-Jacobson, Sourav Das, Chaithan Prakash, Aditya Akella, Li Erran Li, Marina Thottan
    SIGMETRICS 2015

12. Presto: Edge-based Load Balancing for Fast Datacenter Networks
    Keqiang He, Eric Rozner, Kanak Agarwal, Wes Felter, John Carter, Aditya Akella
    SIGCOMM 2015

13. Next Stop, the Cloud: Understanding Modern Web Service Deployment in EC2 and Azure
    Keqiang He, Alexis Fisher, Liang Wang, Aaron Gember, Aditya Akella, Thomas Ristenpart
    IMC 2013

14. Scalable Name Lookup in NDN Using Effective Name Component Encoding
    Yi Wang, Keqiang He, Huichen Dai, Wei Meng, Junchen Jiang, Bin Liu and Yan Chen
    ICDCS 2012

15. 快速自适应调频机制及其在NetFPGA上的实现
    汪漪，孟玮，胡成臣，贺可强，刘斌
    计算机学报 2012

16. Reducing Power of Traffic Manager in Routers via Dynamic On/Off-chip Scheduling
    Jindou Fan, Chengchen Hu, Keqiang He, Junchen Jiang and Bin Liu
    INFOCOM 2012

Patents（专利）

* 专利作者按姓氏字母序

1. Method to mitigate hash correlation in multi-path networks
   Rui Wang, Keqiang He, Hassan Wassel, Junlan Zhou, Shidong Zhang, Leonid Poutievski, Shaileshh Bojja Venkatakrishnan
   美国/中国/欧洲专利，专利号：11223561， 2022

2. Identifying a local congestion control algorithm of a virtual machine
   Kanak B. Agarwal, John Carter, Wesley M. Felter, Yu Gu, Keqiang He*, Eric J. Rozner
   美国专利，专利号：10833996， 2020

3. Virtual switch-based congestion control for multiple TCP flows
   Kanak B. Agarwal, John Carter, Wesley M. Felter, Yu Gu, Keqiang He*, Eric J. Rozner
   美国专利，专利号：10531332， 2020

4. Virtual switch-based congestion control for datacenter networks
   Kanak B. Agarwal, John Carter, Wesley M. Felter, Yu Gu, Keqiang He*, Eric J. Rozner
   美国专利，专利号：10425338， 2019

5. Enforcing datacenter-level congestion control
   Kanak B. Agarwal, John Carter, Wesley M. Felter, Yu Gu, Keqiang He*, Eric J. Rozner
   美国专利，专利号：10237186， 2019

6. Normalized flow value-based congestion control
   Kanak B. Agarwal, John Carter, Wesley M. Felter, Yu Gu, Keqiang He*, Eric J. Rozner
   美国专利，专利号：9985889， 2018

7. Congestion detection using a differentiated packet pair
   Kanak B. Agarwal, John Carter, Wesley M. Felter, Keqiang He*, Eric J. Rozner
   美国专利，专利号：9729448， 2017

8. Handling packet reordering at a network adapter
   Kanak B. Agarwal, John Carter, Wesley M. Felter, Keqiang He*, Eric J. Rozner
   美国专利，专利号：9674297， 2017