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  1. JDK
  2. JDK-8295158

G1: Increase card-based cost sample reporting threshold

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    • gc
    • b20

    Description

      Currently G1 does not report costs for various gc phases if that cost involves less than 10 cards.

      This should avoid reporting outliers caused by various reasons (mostly setup overhead) into the predictors to make them more reliable.

      That 10 is a magic number; recent experiments showed that a value of 1000 is better; add a diagnostic option to configure that during runtime though.

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              tschatzl Thomas Schatzl
              tschatzl Thomas Schatzl
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