Kostis Kaffes

Publications

* denotes equal first authors

Outrunning LLM Cutoffs: A Live Kernel Crash Resolution Benchmark for All.
Chenxi Huang, Alex Mathai, Feiyang Yu, Aleksandr Nogikh, Petros Maniatis, Franjo Ivancic, Eugene Wu, Kostis Kaffes, Junfeng Yang, Baishakhi Ray.
ICML 2026

Speculative Actions: A Lossless Framework for Faster Agentic Systems.
Naimeng Ye*, Arnav Ahuja*, Georgios Liargkovas*, Yunan Lu*, Kostis Kaffes, Tianyi Peng.
ICLR 2026 [ORAL]

Enabling fast networking in the public cloud.
Alireza Sanaee*, Vahab Jabrayilov*, Ilias Marinos, Farbod Shahinfar, Divyanshu Saxena, Gianni Antichi, Kostis Kaffes.
ASPLOS 2026

Santa: Language Agnostic Automated System Call Policy Learning for Cloud Microservices.
Meghna Pancholi, Andreas D. Kellas, Kostis Kaffes, Steven M. Bellovin, Simha Sethumadhavan, Vasileios P. Kemerlis.
DIMVA 2026

Agentic Data Environments.
Elaine Ang, Chenxi Huang, Georgios Liargkovas, Jerry Liu, Jinhui Liu, Nikos Pagonas, Charlie Summers, Haonan Wang, Jiakai Xu, Tianle Zhou, Yusen Zhang, Zhou Yu, Zhuo Zhang, Tianyi Peng, Kostis Kaffes, Eugene Wu.
IEEE Data Engineering Bulletin 2026

BranchBench: Aligning Database Branching with Agentic Demands.
Elaine Ang, Sam Weldon, In Keun Kim, Kevin Durand, Kostis Kaffes, Eugene Wu.
arXiv preprint

AgentOpt Technical Report: Client-Side Optimization for Agent Pipelines.
Wenyue Hua, Sripad Karne, Qian Xie, Armaan Agrawal, Nikos Pagonas, Kostis Kaffes, Tianyi Peng.
arXiv preprint

ALAP: Intent-Based Serverless Computing via Delayed Decision-Making.
Prasoon Sinha, Kostis Kaffes, Neeraja J. Yadwadkar.
SoCC 2025

An Expert in Residence: LLM Agents for Always-On Operating System Tuning.
Georgios Liargkovas, Vahab Jabrayilov, Hubertus Franke, Kostis Kaffes.
ML4Sys @ NeurIPS 2025

Toward Systems Foundations for Agentic Exploration.
Jiakai Xu, Tianle Zhou, Eugene Wu, Kostis Kaffes.
1st Workshop on Systems for Agentic AI (SAA '25)

Cortex: Workflow-Aware Resource Pooling and Scheduling for Agentic Serving.
Nikos Pagonas, Yeounoh Chung, Kostis Kaffes, Arvind Krishnamurthy.
1st Workshop on Systems for Agentic AI (SAA '25)

Set It and Forget It: Zero-Mod ML Magic for Linux Tuning.
Georgios Liargkovas, Prabhpreet Singh Sodhi, Kostis Kaffes.
PACMI 2025

Empowering machine-learning assisted kernel decisions with eBPFML.
Prabhpreet Singh Sodhi, Georgios Liargkovas, Kostis Kaffes.
eBPF 2025

Wave: Offloading Resource Management to SmartNIC Cores.
Jack Tigar Humphries, Neel Natu, Kostis Kaffes, Stanko Novaković, Paul Turner, Hank Levy, David Culler, Christos Kozyrakis.
ASPLOS 2025

Rethinking the Networking Stack for Serverless Environments: A Sidecar Approach.
Vishwanath Seshagiri, Abhinav Gupta, Vahab Jabrayilov, Avani Wildani, Kostis Kaffes.
SoCC 2024

LibPreemptible: Enabling Fast, Adaptive, and Hardware-Assisted User-Space Scheduling.
Yueying Li, Nikita Lazarev, David Koufaty, Tenny Yin, Andy Anderson, Zhiru Zhang, G Edward Suh, Kostis Kaffes, Christina Delimitrou.
HPCA 2024

BPF-oF: Storage Function Pushdown Over the Network.
Ioannis Zarkadas, Tal Zussman, Jeremy Carin, Sheng Jiang, Yuhong Zhong, Jonas Pfefferle, Hubertus Franke, Junfeng Yang, Kostis Kaffes, Ryan Stutsman, Asaf Cidon.
arXiv preprint

Online Learning for Right-Sizing Serverless Functions.
Prasoon Sinha, Kostis Kaffes, Neeraja J. Yadwadkar.
MLArchSys@ISCA 2023

Apiary: A DBMS-Integrated Transactional Function-as-a-Service Framework.
Peter Kraft*, Qian Li*, Kostis Kaffes*, Athinagoras Skiadopoulos, Deeptaanshu Kumar, Danny Cho, Jason Li, Robert Redmond, Nathan Weckwerth, Brian Xia, Peter Bailis, Michael Cafarella, Goetz Graefe, Jeremy Kepner, Christos Kozyrakis, Michael Stonebraker, Lalith Suresh, Xiangyao Yu, Matei Zaharia.
arXiv preprint

Hermod: Principled and Practical Scheduling for Serverless Functions.
Kostis Kaffes, Neeraja J. Yadwadkar, Christos Kozyrakis.
SoCC 2022 -- 24.5% acceptance rate

DBOS: A DBMS-oriented Operating System.
Athinagoras Skiadopoulos*, Qian Li*, Peter Kraft*, Kostis Kaffes*, Daniel Hong, Shana Mathew, David Bestor, Michael Cafarella, Vijay Gadepally, Goetz Graefe, Jeremy Kepner, Christos Kozyrakis, Tim Kraska, Michael Stonebraker, Lalith Suresh, Matei Zaharia.
VLDB 2022

A Progress Report on DBOS: A DBMS-oriented Operating System.
Qian Li*, Peter Kraft*, Kostis Kaffes*, Athinagoras Skiadopoulos, Deeptaanshu Kumar, Jason Li, Michael Cafarella, Goetz Graefe, Jeremy Kepner, Christos Kozyrakis, Michael Stonebraker, Lalith Suresh, Matei Zaharia.
CIDR 2022

Syrup: User-Defined Scheduling across the Stack.
Kostis Kaffes, Jack Tigar Humphries, David Mazieres, Christos Kozyrakis.
SOSP 2021 -- 15.5% acceptance rate -- video

A Case Against (Most) Context Switches.
Jack Tigar Humphries*, Kostis Kaffes*, David Mazieres, Christos Kozyrakis.
HotOS 2021 -- 26.5% acceptance rate -- video

RackSched: A Microsecond-Scale Scheduler for Rack-Scale Computers.
Hang Zhu, Kostis Kaffes, Zixu Chen, Zhenming Liu, Christos Kozyrakis, Ion Stoica, Xin Jin.
OSDI 2020 -- 17.6% acceptance rate -- video

Leveraging Application Classes to Save Power in Highly-Utilized Data Centers.
Kostis Kaffes, Dragos Sbirlea, Yiyan Lin, David Lo, Christos Kozyrakis.
SoCC 2020 -- 24.5% acceptance rate -- video

Centralized Core-granular Scheduling for Serverless Functions.
Kostis Kaffes, Neeraja J. Yadwadkar, Christos Kozyrakis.
SoCC 2019 -- 24.8% acceptance rate

Mind the Gap: A Case for Informed Request Scheduling at the NIC.
Jack Tigar Humphries, Kostis Kaffes, David Mazieres, Christos Kozyrakis.
HotNets 2019 -- 20.4% acceptance rate

Shinjuku: Preemptive Scheduling for Microsecond-Scale Tail Latency.
Kostis Kaffes, Timothy Chong, Jack Tigar Humphries, Adam Belay, David Mazieres, Christos Kozyrakis.
NSDI 2019 -- 12.5% acceptance rate -- video