links for 2011-03-14

  • Generational garbage collection (GGC) is one of the most popular garbage collection techniques. GGC gains a performance advantage by performing minor collections on the younger objects in the heap, reducing the number of major collections of the whole heap. A promotion policy determines when an object moves from the younger generation to the older. The design of GGC has been justified by the plausible assumption that many objects die very young, and a few live a very long time. But, attempts to tune the performance of GGC by adjusting the promotion policy have been disappointing – only the simplest immediate promotion policy has proved attractive. The success of GGC is probably due to simplicity and to avoiding scans of the whole heap, rather than to accurate lifetime predictions.
    (tags: gc algorithm)
  • (tags: leadership)
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