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  1. JDK
  2. JDK-8206920

Improve performance of Resource/ChunkPool handling

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    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P3
    • Resolution: Not an Issue
    • Affects Version/s: 11
    • Fix Version/s: 12
    • Component/s: hotspot
    • Labels:
      None
    • Subcomponent:
    • CPU:
      x86_64
    • OS:
      os_x

      Description

      Continuation prototype profiling showed scalability issues with ChunkPool implementation.
      Note: Resources are semantically thread local. Continuation usage was very specific to internal vm processing for freezing/thawing and has since been removed due to the cost. The profiles highlighted a high cost of freeing chunks. Need to create some microbenchmarks to determine if this is a problem with heuristics of freeing chunks or more fundamental issue with a shared global lock across ChunkPools. Sample profile attached.

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              Assignee:
              hseigel Harold Seigel
              Reporter:
              acorn Karen Kinnear (Inactive)
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                Created:
                Updated:
                Resolved: