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  1. JDK
  2. JDK-8060025

Object copy time regressions after JDK-8031323 and JDK-8057536

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 8u40, 9
    • Fix Version/s: 9
    • Component/s: hotspot
    • Subcomponent:
      gc
    • Resolved In Build:
      b45

      Backports

        Description

        Object copy times regress with SPECjbb2005 (and any other workload that mostly copies around data in the young generation) by a few percent.

        JDK-8031323 and JDK-8057536 seem to be the problem.

        Change copy_to_survivor_space() and friends to fix this.

          Attachments

          1. 00-remove-mark-load.patch
            4 kB
            Thomas Schatzl
          2. 01-split-allocation.diff
            5 kB
            Thomas Schatzl

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                Assignee:
                Unassigned Unassigned
                Reporter:
                tschatzl Thomas Schatzl
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                  Updated:
                  Resolved: