Quantitative Evaluation of Thread-Local Garbage Collection Efficiency for Java


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This paper discusses thread-local garbage collection (GC), a technique of automatic memory management aimed at improving GC throughput and reducing GC pauses in managed runtimes. It exploits the observation that most objects do not escape the scope of the thread allocated them; therefore, memory occupied by these objects can be reclaimed locally within the thread. The question is how to efficiently compute this property at run time while achieving a good tradeoff between the precision of necessary dynamic analysis and the implied overheads for application performance. This paper gives a formal definition of thread-local reachability in the heap graph and proposes several strategies to compute it. Having implemented these strategies in a Java virtual machine, we present results of quantitative evaluation of the amount of thread-local objects discovered with a representative test suite of modern Java applications.

作者简介

A. Filatov

Novosibirsk State University

编辑信件的主要联系方式.
Email: a.filatov@g.nsu.ru
俄罗斯联邦, ul. Pirogova 2, Novosibirsk, 630090

V. Mikheev

Ershov Institute of Informatics Systems, Siberian Branch, Russian Academy of Sciences

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Email: vitvit@excelsior.ru
俄罗斯联邦, pr. Akademika Lavrent’eva 6, Novosibirsk, 630090

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