I primarily work in the fields of operating systems and networking; my current projects include:

Software Defined Network Function Virtualization: We are designing the software infrastructures and management algorithms needed to transition network services like routers, firewalls, and intrusion detection systems from running on hardware to more flexible, software-based environments. The basis for our research is OpenNetVM (NSDI 14, HotMiddlebox 16), a high performance NFV platform that we have released as open source to the research community. Through careful optimizations at the systems-level, OpenNetVM can achieve packet processing rates of nearly 70Gbps, while retaining a flexible, SDN-controlled design. We have demonstrated the power of this platform with a self-managing, high speed load balancer for memcached clusters (ICAC 16 Best Paper), explored extreme scalability (Co-NEXT 16) service chain scheduling (SIGCOMM 17), and protocol-stack (SIGCOMM 18) related challenges. This work is supported in part by NSF CNS-1422362. More info here!

Efficient, Flexible, and Dependable Clouds: Modern data centers rely on virtualization to partition servers into isolated components. My early work on “black-box” and “gray-box” virtual machine management (NSDI 07) sought to evaluate the benefits and drawbacks of sending information across the virtualization abstraction layer for resource management. Since then we’ve explored how carefully puncturing the virtualization abstraction layer can be used to dynamically manage memory (VEE 09 Best Paper, Usenix ATC 12, VEE 14), storage (SC 15, IC2E 16) and CPU (IWQoS 12 Best Paper, CCGrid 14). We’ve also investigated the challenges with defending cloud services from both natural disasters (SoCC 11) and malicious attacks (EuroSys 11, HotCloud 16). This work is supported in part by NSF CNS-1525992, an NSF CAREER Award, the Comcast Technology Research and Development Fund, and a Google Faculty Award.

Selected Recent Publications

My full publication list is available on Google Scholar or on my CV. Here are some recent publications most representative of my ongoing work.

Service

My recent Program Committee service includes:

I also run an outreach program to local high schools that teaches students how the popular websites they use are actually built. Contact me if you are interested in this program.