NDLI: A page fault equation for dynamic heap sizing

Content Provider	ACM Digital Library
Author	Tay, Y.C. Zong, X.R.
Abstract	For garbage-collected applications, dynamically-allocated objects are contained in a heap. Programmer productivity improves significantly if there is a garbage collector to automatically de-allocate objects that are no longer needed by the applications. However, there is a run-time performance overhead in garbage collection, and this cost is sensitive to heap size H: a smaller H will trigger more collection, but a large H can cause page faults, as when H exceeds the size M of main memory allocated to the application. This paper presents a Heap Sizing Rule for how H should vary with M. The Rule can help an application trade less page faults for more garbage collection, thus reducing execution time. It is based on a heap-aware Page Fault Equation that models how the number of page faults depends on H and M. Experiments show that this rule outperforms the default policy used by JikesRVM's heap size manager. Specifically, the number of faults and the execution time are reduced for both static and dynamically changing M.
Starting Page	201
Ending Page	206
Page Count	6
File Format	PDF
ISBN	9781605585635
DOI	10.1145/1712605.1712636
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2010-01-28
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Garbage collection Dynamic tuning Heap size Page faults
Content Type	Text
Resource Type	Article

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A page fault equation for dynamic heap sizing