IZ67445: 64K PAGING TAKING PLACE WHEN AVAILABLE SYSTEM RAM EXISTS APPLIES TO AIX 5300-08

A fix is available

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • When using 64k pages there may be paging space page
    outs of 64k pages even when VMM tuning indicates it
    should
    not be happening and AVM << real memory. This will
    normally
    occur when the demand for 64k and 4k pages is
    fluctuating.
    

Local fix

Problem summary

  • The customer will see 64K paging even though there are
    considerable 4K pages in memory.
    

Problem conclusion

  • The psmd algorithm is changed to be more aggressive in
    coalescing pages.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IZ67445

  • Reported component name

    AIX 5.3

  • Reported component ID

    5765G0300

  • Reported release

    530

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2009-12-30

  • Closed date

    2010-02-25

  • Last modified date

    2013-03-29

Fix information

  • Fixed component name

    AIX 5.3

  • Fixed component ID

    5765G0300

Applicable component levels

  • R530 PSY U836022

       UP10/05/18 I 1000



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Document information


More support for:

AIX family

Software version:

530

Operating system(s):

AIX

Reference #:

IZ67445

Modified date:

2013-03-29

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