Jonggyu Park

Postdoc researcher
Paul G. Allen School of Computer Science & Engineering
University of Washington

Email: jonggyu [at] cs [dot] washington [dot] edu
Links: CV | Résumé | Linkedin | Google Scholar | GitHub | Research Statement

I am a postdoc researcher at the University of Washington, advised by Tom Anderson and Simon Peter. My research interests include operating systems, storage, virtualization, and datacenter power management.

I received my B.S., M.S. (advised by Euiseong Seo), and Ph.D. (advised by Young Ik Eom) from Sungkyunkwan University in 2014, 2016, and 2022, respectively.

📢 Update: I’m currently on the job market. Feel free to reach out.

Research

During my Ph.D., I built single-server mechanisms that make performance and fairness enforceable: I redesigned storage behavior to manage fragmentation (FragPicker, ACM SOSP'21), enabled fairness in I/O cache (WaC, IEEE TC '21), and treated synchronization itself as a schedulable resource (Locks as a Resource, ACM PPoPP'24). Currently, I am dedicated to the design of power-adaptive data center infrastructure. Power oversubscription and volatile demand (especially with AI workloads) make reactive throttling too slow and too conservative. My power-management work builds a full-stack path to power adaptivity.

Representative projects include:

Datacenter Control Plane (1) EMPower: Power Control Plane (2) PIP: power-adaptive servers Compute node Source Compute node Destination VM VM CXL Memory Pools (3) FM²: Fast live VM Migration over CXL
Global scheduling + local enforcement + fast mobility

Skills & Experience

Selected Publications

[11] Prediction-Informed Power Management for General-Purpose Compute Servers
Jonggyu Park, Simon Peter, and Tom Anderson
Proceedings of ACM European Conference on Computer Systems (EuroSys), 2026.
Power management
[10] PASS: A Power Adaptive Storage Server
Dedong Xie, Theano Stavrinos, Jonggyu Park, Simon Peter, Baris Kasikci, and Tom Anderson
Proceedings of ACM European Conference on Computer Systems (EuroSys), 2026.
Power management Storage systems
[9] EMPower: The Case for a Cloud Power Control Plane
Jonggyu Park, Theano Stavrinos, Simon Peter, and Thomas Anderson
Proceedings of ACM SIGENERGY Energy Informatics Review, Volume 4, Issue 5, also presented in HotCarbon, 2024.
Power management
[8] Locks as a Resource: Fairly Scheduling Lock Occupation with CFL
Jonggyu Park and Young Ik Eom
Proceedings of the 29th ACM SIGPLAN Annual Symposium on Principles and Practice of Parallel Programming (PPoPP), 2024.
Synchronization
[7] Filesystem Fragmentation on Modern Storage Systems
Jonggyu Park and Young Ik Eom
ACM Transactions on Computer Systems (TOCS), 2023.
Storage systems
[6] File Fragmentation from the Perspective of I/O Control
Jonggyu Park and Young Ik Eom
Proceedings of the 14th ACM Workshop on Hot Topics in Storage and File Systems (HotStorage), 2022.
Storage systems
[5] Weight-Aware Cache for Application-Level Proportional I/O Sharing
Jonggyu Park and Young Ik Eom
IEEE Transactions on Computers, 2021.
Storage systems
[4] FragPicker: A New Defragmentation Tool for Modern Storage Devices
Jonggyu Park and Young Ik Eom
Proceedings of the 28th ACM Symposium on Operating Systems Principles (SOSP), 2021.
Storage systems
[3] Towards Application-level I/O Proportionality with a Weight-aware Page Cache Management
Jonggyu Park, Kwonje Oh, and Young Ik Eom
Proceedings of the 36th International Conference on Massive Storage Systems and Technology (MSST), 2020.
Storage systems
[2] Anti-Aging LFS: Self-Defragmentation With Fragmentation-Aware Cleaning
Jonggyu Park and Young Ik Eom
IEEE ACCESS, 2020.
Storage systems
[1] File Defragmentation Scheme for a Log-Structured File System
Jonggyu Park, Dong Hyun Kang, and Young Ik Eom
Proceedings of the 7th ACM Asia-Pacific Workshop on Systems (APSys), 2016.
Storage systems

Professional Service

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