Publications

Reactive control of energy constraints in Kubernetes clusters: a multi-lever re-adaptation policy with SLA management

We propose a control-theoretic framework for cluster energy budgets that coordinates RAPL, vertical pod scaling, and admission control as coupled levers. Evaluated on a 64-node Grid’5000 cluster under mixed latency-sensitive and batch workloads.

@article{romial2026reactive,
  title   = "Reactive control of energy constraints in Kubernetes clusters",
  author  = "Romial, M. W. and Obama, C. and Pastor, J. and Lebre, A.",
  journal = "ACM TOCS (under review)",
  year    = "2026"
}

Energy-proportional scheduling via adaptive RAPL budgets

We introduce AdaptRAPL, a scheduler extension that re-negotiates per-package power budgets every 250 ms based on observed SLO slack. On SPEC Cloud workloads, we achieve 19 % energy savings with < 2 % tail-latency regression.

@inproceedings{romial2025adapt,
  title     = "Energy-proportional scheduling via adaptive RAPL budgets",
  author    = "Romial, M. W. and Pastor, J. and Lebre, A.",
  booktitle = "UCC '25",
  year      = "2025"
}

Multi-lever re-adaptation of SLA under a power cap

@inproceedings{romial2025multilever,
  title     = "Multi-lever re-adaptation of SLA under a power cap",
  author    = "Romial, M. W. and Lebre, A.",
  booktitle = "BDCAT '25",
  year      = "2025"
}

Position paper: Kubernetes needs an energy descriptor

@inproceedings{romial2024position,
  title     = "Kubernetes needs an energy descriptor",
  author    = "Romial, M. W. and Lebre, A.",
  booktitle = "HotCarbon '24",
  year      = "2024"
}

Mesurer l’énergie des conteneurs : méthodologie et artefact reproductible

First-year thesis proposal: toward energy-aware orchestration