IV11804: HIGH PSMD THREADS CPU CONSUMPTION APPLIES TO AIX 6100-08

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

  • The ps command shows a large amount of cpu time used by the
    psmd process.  This can occur when the system workload
    gnerates constant demand for new 4K and 64K pages.
    

Local fix

Problem summary

  • The ps command shows a large amount of cpu time used by the
    psmd process.  This can occur when the system workload
    gnerates constant demand for new 4K and 64K pages.
    

Problem conclusion

  • Change the psmd page size promote/demote algorithm to be less
    aggresive converting pages when there is a constant demand
    for both 4K and 64K pages.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV11804

  • Reported component name

    AIX 610 STD EDI

  • Reported component ID

    5765G6200

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2011-12-06

  • Closed date

    2011-12-06

  • Last modified date

    2013-02-27

  • APAR is sysrouted FROM one or more of the following:

    IV11778

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    AIX 610 STD EDI

  • Fixed component ID

    5765G6200

Applicable component levels

  • R610 PSY U845040

       UP12/10/23 I 1000

PTF to Fileset Mapping



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Document information


More support for:

AIX Enterprise Edition

Software version:

610

Operating system(s):

AIX

Reference #:

IV11804

Modified date:

2013-02-27

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