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2006
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An Emprical Evaluation of Memory Management Alternatives for Real-Time Java

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An Emprical Evaluation of Memory Management Alternatives for Real-Time Java
Memory management is a critical issue for correctness and performance of hard-real time systems. Java environments usually incorporate high-throughput garbage collection algorithms, but these algorithms can induce pause times in excess of 100 milliseconds. This is not acceptable for a real-time system. Two approaches for remedying this problem are being investigated. The pauses times can be bounded with a real-time garbage collector, or means to program around the collector entirely can be provided, as it done in the Real-time Specification for Java with its Scoped Memory interface. This paper presents the first side-by-side empirical evaluation of the impact of memory management regimes on realistic realtime applications. We present usability arguments as well as a detailed performance comparison of scoped memory and real-time garbage collection. Experience with medium sized systems suggests that while programming with Scoped Memory is error prone, it provides substantially better ...
Filip Pizlo, Jan Vitek
Added 12 Jun 2010
Updated 12 Jun 2010
Type Conference
Year 2006
Where RTSS
Authors Filip Pizlo, Jan Vitek
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