Author

Seo Jin Park

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Preprint Aug 2026

Offering Microsecond-Scale Cross-VM Core Elasticity on Colocated Lightweight Virtual Machines

HyperFlux is presented, a commodity-KVM ultralight VM substrate that makes a VM's parallelism width (the number of physical cores backing it) elastic at runtime, and it is shown that HyperFlux can move a core across VMs in merely 13$\mu$s, even when forcibly reclaiming it from a busy donor, orders of magnitude faster t...

Yi-Bo Yan, Seo Jin Park · 1 citation

Jul 2026

DDB: Source-Level Interactive Debugging for Distributed Applications

DDB is presented, a source-level interactive debugger that extends interactive debugging capabilities to distributed applications and shows that each of these challenges admits a targeted solution.

Yibo Yan, Junzhou He, Seo Jin Park · arXiv.org · 0 citations

Preprint Aug 2026

Evaluating Agentic Code Repair Capabilities in Distributed Systems

DDBench is introduced, a code-repair benchmark of 60 historical bugs mined from 13 open-source distributed systems, partitioned into three difficulty tiers, isolating the effect of debugging context from model capability.

Yi-Bo Yan, Huijuan Wang, Jun-Zhou He et al. · 0 citations