IBM Support

IV80389: REDUCED PERFORMANCE RUNNING JSR292 WORKLOADS

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APAR status

  • Closed as program error.

Error description

  • Error Message: N/A
    .
    Stack Trace: N/A
    .
    Poor performance running applications employing JSR292 features
    (namely the invokedynamic bytecode) in computationally bound
    workloads that combine JSR292 with large numbers of calls or
    large methods.
    

Local fix

Problem summary

  • In scenarios where JSR292 bytecode features are used in
    combination with either large numbers of method calls or calls
    to large methods in compute heavy workloads, the JIT optimizer
    may fail to select the best inlining strategy leading to reduced
    performance.
    

Problem conclusion

  • The JIT inlining algorithms have been significantly enhanced to
    better handle JSR292 language features and to select an inlining
    scheme likely to generate much better performance.
    .
    This APAR will be fixed in the following Java Releases:
       8    SR2 FP10  (8.0.2.10)
    .
    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

    IV80389

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    130

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-01-14

  • Closed date

    2016-01-14

  • Last modified date

    2016-01-14

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

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

Fix information

  • Fixed component name

    JIT

  • Fixed component ID

    620700124

Applicable component levels

  • R130 PSY

       UP

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Document Information

Modified date:
14 January 2016