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IV26272: REDUCE EARLY WORKING STORAGE PAGING APPLIES TO AIX 6100-07

A fix is available

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APAR status

  • Closed as program error.

Error description

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:
    * Users of the AIX 6100-07 Technology Level with the vmo
    * tunable "numperm_global = 1" set.
    ****************************************************************
    * PROBLEM DESCRIPTION:
    * Paging of computational storage pages is occurring when a
    * high percentage of memory is being used for the file cache.
    ****************************************************************
    * RECOMMENDATION:
    * Install APAR IV26272.
    * Prior to APAR availability, interim fixes are available at:
    * ftp://public.dhe.ibm.com/aix/ifixes/iv26272/
    * IV26272s04 for 6100-07-04
    * IV26272s05 for 6100-07-05
    ****************************************************************
    

Problem conclusion

  • LRU processing changed to perform file only 4K page stealing
    when 64K page size is at maxpin condition and there are 4K file
    pages available to steal in the mempool.
    

Temporary fix

  • *********
    * HIPER *
    *********
    

Comments

APAR Information

  • APAR number

    IV26272

  • Reported component name

    AIX 610 STD EDI

  • Reported component ID

    5765G6200

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Submitted date

    2012-08-14

  • Closed date

    2012-08-14

  • Last modified date

    2013-04-09

Fix information

  • Fixed component name

    AIX 610 STD EDI

  • Fixed component ID

    5765G6200

Applicable component levels

  • R610 PSY U854383

       UP12/12/06 I 1000

PTF to Fileset Mapping



Document information

More support for: AIX Enterprise Edition

Software version: 610

Operating system(s): AIX

Reference #: IV26272

Modified date: 09 April 2013