IV01849: MANY INTERPRETER PROFILING ENTRIES FAIL TO BE STORED IN THE SHAR ED CLASS CACHE

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APAR status

  • Closed as program error.

Error description

  • Error Message: N/A
    .
    Stack Trace: N/A
    .
    

Local fix

  • This is a performance issue and there is no workaround for it.
    The performance impact is relatively small.
    

Problem summary

  • The algorithm that is used to store interpreter profiling data
    in the shared class cache (to be used by subsequent runs) has a
    bug where some entries related to interface calls fail to be
    stored. As a consequence, subsequent runs cannot take advantage
    of such information and code quality could suffer. However, the
    overall performance impact is expected to be small because the
    issue is limited to methods compiled during startup.
    

Problem conclusion

  • This defect will be fixed in:
    6.0.1 GA FP1
    .
    The JIT code has been modified to rectify the problem.
    .
    To obtain the fix:
    Install build 20110227 or later
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV01849

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    260

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-06-15

  • Closed date

    2011-06-15

  • Last modified date

    2011-06-15

  • 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

  • R260 PSY

       UP



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Document information


More support for:

Runtimes for Java Technology
Just In Time (JIT) Compiler

Software version:

260

Reference #:

IV01849

Modified date:

2011-06-15

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