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Content Provider | ACM Digital Library |
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Author | Siebert, Fridtjof |
Abstract | With the current developments in CPU implementations, it becomes obvious that ever more parallel multicore systems will be used even in embedded controllers that require real-time guarantees. When garbage collection is used in these systems, parallel and concurrent garbage collection brings important performance advantages in the average case. In a real-time system, however, guarantees on the GC's performance in the worst case are required. This paper explains how the single-CPU real-time GC of the Java implementation JamaicaVM was changed to make it a hard real-time garbage collector that is parallel and concurrent. Parallel means that an arbitrary number of CPUs may perform GC work in parallel, while concurrent means that the GC work can be performed concurrently to the application code without pre-empting the application. In addition, the single units of work that this garbage collector has to perform are very small and uniform and the total amount of GC work is bounded by a function of the heap size, such that it becomes possible for any application that has a bounded amount of reachable memory to run the GC work such that sufficient GC progress can be ensured for the application never to run out of heap space. |
Starting Page | 11 |
Ending Page | 20 |
Page Count | 10 |
File Format | |
ISBN | 9781450300544 |
DOI | 10.1145/1806651.1806654 |
Language | English |
Publisher | Association for Computing Machinery (ACM) |
Publisher Date | 2010-06-05 |
Publisher Place | New York |
Access Restriction | Subscribed |
Subject Keyword | Garbage collection Multicore Java Concurrent Real-time Parallel |
Content Type | Text |
Resource Type | Article |
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