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  1. JDK
  2. JDK-8169192

Poor ByteBuffer performance on SPARC

    Details

    • Type: Enhancement
    • Status: Open
    • Priority: P4
    • Resolution: Unresolved
    • Affects Version/s: 9, 10
    • Fix Version/s: tbd
    • Component/s: hotspot
    • Labels:
    • Subcomponent:
    • CPU:
      sparc
    • OS:
      generic

      Description

      Unaligned byte access conditions resulting in (unnecessarily) poor code on the SPARC architecture. Poor results are demonstrated in e.g., java.nio.ByteBuffers.testByteBufferBulkGet10, where the code executed on SPARC uses a simplistic load-byte, store-byte approach (compared to the merged load-quad used on x86).

      Code generation on SPARC could be improved by using the new (S5) support for misaligned loads/stores and improved byte copy layout for inline intrinsics.

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              • Assignee:
                Unassigned
                Reporter:
                phedlin Patric Hedlin
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                Dates

                • Created:
                  Updated: