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  1. JDK
  2. JDK-8213229

Investigate treating StringTable as weak in young collections

    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 13
    • Component/s: hotspot
    • Subcomponent:
      gc
    • Resolved In Build:
      b06
    • CPU:
      generic
    • OS:
      generic

      Description

      Current STW collectors presently treat the StringTable as a strong root in young collections. This avoids the need to walk the StringTable and delete dead entries in a young collection. Instead it walks the StringTable and marks all the strings, as one of the in-parallel root marking phases.

      With the recent reimplementation of the StringTable using ConcurrentHashtable and OopStorage, treating it as a strong root rather than a weak root in young collections may no longer provide best performance.

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              • Assignee:
                tschatzl Thomas Schatzl
                Reporter:
                kbarrett Kim Barrett
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                Dates

                • Created:
                  Updated:
                  Resolved: