Current Projects

High-performance Software Stacks for Terabit Ethernet

• 한국연구재단 중견연구지원사업 (funded by NRF, Mar. 2022 - Feb. 2026).

• Designing and building new software stacks that achieve near-hardware performance with >=200Gbps links. 

• NetChannel: disaggregating the host network stack. [SIGCOMM'22] [github] [Netdev 0x16]

Intelligent Networked Systems for Cloud Computing

• Desigining a new system framework for SLO-configured virtual machines and containers. [TCC]

• Applying machine learning apporaches to the systems (joint work with KU and KNU).

Collaboration with Samsung

• Network stacks and algorithms for multipath transmissions (funded by Samsung, Mar. 2023 - Feb. 2026).

• System software designs for memory-semantic SSDs.

Past Projects

CPU-efficient Kernel Stacks for Emerging High-Performance Hardware

• i10: Desigining a new remote storage I/O stack. [NSDI'20] [github] [Netdev 0x14]

• blk-switch: Rearchitecting Linux storage I/O stack. [OSDI'21] [github]

• Understanding Linux network stack overheads. [SIGCOMM'21] [github] [Netdev 0x15]

Multipath TCP (MPTCP) Linux kernel projects

• Developing a Multipath TCP (MPTCP) proxy server for KT’s GiGA LTE service, which aggregates LTE and Wi-Fi bandwidths, based on the open-source MPTCP Linux kernel. [patents]

• Designing and implementing Balia algorithm -- included in the open-source MPTCP Linux kernel. [ToN'16] [www] [github] [award1] [award2]

• Demonstrating that the Balia algorithm achieves better (i) responsiveness to network changes and (ii) fairness to single path TCP, compared to existing algorithms -- LIA and OLIA. [IETF Internet-Draft]

Transport Protocols for Cloud Data Centers

• DIATCP: Deadline- and Incast-Aware TCP. The implementation has been deployed on a data acquisition network at CERN. [ComNet'14] [Link]

• FastCoRe: Fast coupled retransmission for Multipath TCP. [Systems Journal'18]

• SCCP: Scalable congestion control protocol based on Software Defined Networking (SDN). [Globecom'15]