VOOZH about

URL: https://www.ibm.com/support/pages/apar/IV77909

⇱ IV77909: PERFORMANCE REGRESSION IN JAVA 8 ON POWER WHEN CONVERTING UTF16 CHARACTERS TO BYTES


IV77909: PERFORMANCE REGRESSION IN JAVA 8 ON POWER WHEN CONVERTING UTF16 CHARACTERS TO BYTES

APAR status

  • Closed as program error.

Error description

  • Error Message: A performance regression may be observed on Java
    8 when converting UTF16 characters to bytes on POWER platforms
    when comparing to Java 7.
    .
    Stack Trace: N/A
    .
    

Local fix

Problem summary

  • The performance regression is due to a functional fix to the
    conversion routines that requires additional testing for
    surrogate pairs.
    

Problem conclusion

  • The conversion routines have been improved to offset the cost of
    the additional surrogate pair tests.
    .
    This APAR will be fixed in the following Java Releases:
     8 SR2 (8.0.2.0)
    .
    Contact your IBM Product's Service Team for these Service
    Refreshes and Fix Packs.
    For those running stand-alone, information about the available
    Service Refreshes and Fix Packs can be found at:
     https://www.ibm.com/developerworks/java/jdk/
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV77909

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    130

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2015-10-09

  • Closed date

    2015-10-09

  • Last modified date

    2015-10-09

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

  • Fixed component name

    JIT

  • Fixed component ID

    620700124

Applicable component levels

  • R130 PSY

       UP

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSC9HBA","label":"Just In Time (JIT) Compiler"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"130","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
09 October 2015