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  1. JDK
  2. JDK-8139652

Mutator refinement processing should take the oldest dirty card buffer

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    • gc
    • b16

    Description

      Currently, when a mutator helps refining a dirty card buffer, it refines the current buffer it just filled.
      In many situations this is not a good idea, because often the mutator will keep accessing the same memory areas again, immediately generating new card entries.

      Change the algorithm to use the last (oldest) buffer.

      There is a preliminary patch attached, needs perf testing.

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              kbarrett Kim Barrett
              tschatzl Thomas Schatzl
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