Overseer: low-level hardware monitoring and management for Java

Authors:
Achille Peternier;Daniele Bonetta;Walter Binder;Cesare Pautasso
Affiliations:
University of Lugano (USI), Lugano, Switzerland;University of Lugano (USI), Lugano, Switzerland;University of Lugano (USI), Lugano, Switzerland;University of Lugano (USI), Lugano, Switzerland
Venue:
Proceedings of the 9th International Conference on Principles and Practice of Programming in Java
Year:
2011

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Abstract

The high-level and portable nature of the Java platform allows applications to be written once and executed on all the supported systems. However, such a feature comes at the cost of hardware abstraction, making it more difficult or even impossible to access several low-level functionalities. Overseer is a Java framework that makes it possible on Linux systems by simplifying access to real-time measurement of low-level data such as Hardware Performance Counters (HPCs), IPMI sensors, and Java VM internal events. Overseer supports functionalities such as HPC-management, process/thread affinity settings, hardware topology identification, as well as power-consumption and temperature monitoring. In this paper we describe Overseer and how to use it to extend Java applications with functionalities not provided by the default runtime. A public release of Overseer is available.