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  1. JDK
  2. JDK-8035815

Cache-align and pad the from card cache

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    • Subcomponent:
      gc
    • Resolved In Build:
      b08

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        Description

        The fast card cache is a very frequently accessed data structure.

        It is basically a 2d array of per-region values (for every thread) that contain the recently card within that region that has been put into the remembered set.

        This 2d array, nor its per-thread components are not aligned to cache lines or padded in any way to avoid false sharing.

        Fix this.

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                Assignee:
                tschatzl Thomas Schatzl
                Reporter:
                tschatzl Thomas Schatzl
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