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Recent & Upcoming Talks Ongoing & Past Projects Linux kernel contribution history (LWN subscription is required) As of 2026-06-08, made 1,192 commits for mainline Linux kernel in total. Recent Publications CV

Active Below are actively being developed. DAMON: Data Access Monitor damo hackermail Lazybox Inactive Below are not actively being developed at the moment. Translation of “Is Parallel Programming Hard, And, If So, What Can You Do About It?” stream-track RCX: Read-Copy Transact GCMA: Guaranteed Contiguous Memory Allocator DAPHICX: Data Access Pattern Hint Injecting Compiler Extension

2026 SJ Park, You’re Measuring Memory Wrong: The Right Ways With DAMON. In Open Source Summit Europe, Oct 2026. Link DAMON (nano) Conference. In Linux Plumbers, Oct 2026. Link Breaking through Accessed Bit Limits of DAMON. SJ Park, Ravi Jonnalagadda, Akinobu Mita Beyond Weighted Interleaving: Bandwidth-Driven Memory Tiering with DAMON. Ravi Jonnalagadda Guiding THP Decisions with DAMON Memory Monitoring. Asier Gutierrez Host-side DAMON Hotness under KVM/THP: Granularity Gaps and Evidence for Demotion....

SeongJae Park, Madhuparna Bhowmik, Alexandru Uta, DAOS: Data Access-aware Operating System. In The 31st International ACM Symposium on High-Performance Parallel and Distributed Computing (HPDC'22), June 2022. Paper, Slides, Poster SeongJae Park, Paul E. McKenney, Laurent Dufour, Heon Y. Yeom, An HTM-Based Update-side Synchronization for RCU on NUMA systems. In 15th ACM European Conference on Computer Systems (EuroSys), April 2020. Paper, Video (5min, 12min), Slides SeongJae Park, Yunjae Lee, Heon Y....