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IV52649: PERFORMANCE ISSUE WITH JAVA.LANG.RUNTIME.EXEC() ON AIX

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Error Message: N/A
    .
    Stack Trace: N/A
    .
    Java on AIX platform closes 64K file descriptors in the child
    process irespective of how many are actually used, resulting a
    performance overhead.
    

Local fix

Problem summary

  • Current JDK implementation on AIX closes all file descriptors
    ranging from 1 to maximum allowed fd limit in the child process.
    

Problem conclusion

  • JDK has been modified to close only the file descriptors which
    are actually opened.
    .
    This APAR will be fixed in the following Java Releases:
       6    SR16 FP7  (6.0.16.7)
       6 R1 SR8 FP7   (6.1.8.7)
       7 R1 SR3 FP10  (7.1.3.10)
       7    SR9 FP 10 (7.0.9.10)
       8    SR1 FP10  (8.0.1.10)
    .
    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

    IV52649

  • Reported component name

    JAVA CLASS LIBS

  • Reported component ID

    620700130

  • Reported release

    600

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2013-11-29

  • Closed date

    2015-06-25

  • Last modified date

    2016-09-29

  • 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

    JAVA CLASS LIBS

  • Fixed component ID

    620700130

Applicable component levels

  • R600 PSY

       UP

  • R700 PSY

       UP

  • R800 PSY

       UP



Document information

More support for: Runtimes for Java Technology
Java Class Libraries

Software version: 6.0

Reference #: IV52649

Modified date: 29 September 2016