IV33530: AIX SPECIFIC - HIGH CPU UTILISATION WHEN NIO SELECTORS ARE USED

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APAR status

  • Closed as program error.

Error description

  • Error Message: High CPU utilization on AIX
    .
    Stack Trace: N/A
    .
    select method may return zero continuously on AIX when NIO
    Selectors are used.  Java may exhibit high CPU usage symptoms
    

Local fix

Problem summary

  • Due to code error, closed file descriptors are polled
    

Problem conclusion

  • This defect will be fixed in:
    6.0.0 SR13
    6.0.1 SR5
    7.0.0 SR4
    .
    AIX NIO Selector code is updated to take care of this situation.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV33530

  • Reported component name

    JAVA CLASS LIBS

  • Reported component ID

    620700130

  • Reported release

    600

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-12-17

  • Closed date

    2012-12-25

  • Last modified date

    2013-02-28

  • 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



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Document information


More support for:

Runtimes for Java Technology
Java Class Libraries

Software version:

6.0

Reference #:

IV33530

Modified date:

2013-02-28

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