Garbage collector assisted memory offloading for memory-constrained devices

DeQing Chen, A. Messer, D. Milojicic, S. Dwarkadas
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引用次数: 7

Abstract

Our everyday lives are becoming increasingly filled with mobile devices of varying capabilities. The common practice of creating multiple versions of the same application to cope with diverse device resource capabilities increases software development and maintenance costs. We discuss an offloading method to mask out the memory constraints on devices running a typical Java virtual machine. The method allows the garbage collector to selectively offload part of the object heap into a nearby wired server. In comparison with traditional virtual memory techniques, the garbage collector can make wiser offloading choices using information about object access patterns at a finer granularity. Our experiments show that our prototype introduces modest overhead in the JVM while allowing applications to execute on devices without enough physical memory. In addition, when running with the Linux virtual memory system under intense memory constraints, the prototype achieves an average improvement of 24% in run-time performance and 53% in energy savings.
垃圾收集器协助内存受限设备的内存卸载
我们的日常生活越来越多地充斥着各种功能的移动设备。为同一应用程序创建多个版本以应对不同设备资源能力的常见做法增加了软件开发和维护成本。我们将讨论一种卸载方法,以掩盖运行典型Java虚拟机的设备上的内存约束。该方法允许垃圾收集器选择性地将部分对象堆卸载到附近的有线服务器上。与传统的虚拟内存技术相比,垃圾收集器可以使用更细粒度的对象访问模式信息做出更明智的卸载选择。我们的实验表明,我们的原型在JVM中引入了适度的开销,同时允许应用程序在没有足够物理内存的设备上执行。此外,当与Linux虚拟内存系统一起在严格的内存约束下运行时,原型实现了24%的运行时性能平均提升和53%的能源节约。
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