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OA51549: HIGHER THAN EXPECTED GENERAL PURPOSE CPU USAGE WITH ACCESS MONITOR WHEN ZIIPS ARE PRESENT

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Higher than expected general purpose CPU usage is seen for
    applications whose workload is eligible for zIIP processing
    when Access Monitor is enabled.
    

Local fix

  • n/a
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: Users of the zSecure Access Monitor (started *
    *                 task) exploiting the software on systems     *
    *                 with IBM z Systems Integrated Information    *
    *                 Processor(s) (zIIP).                         *
    ****************************************************************
    * PROBLEM DESCRIPTION: The zSecure Access Monitor started task *
    *                      might consume an excessive amount of    *
    *                      the central processor time on systems   *
    *                      equipped with the IBM z Systems         *
    *                      Integrated Information Processor(s)     *
    *                      (zIIP).                                 *
    ****************************************************************
    * RECOMMENDATION: Apply the PTF provided and review the        *
    *                 documentation updates supplied.              *
    ****************************************************************
    When the zSecure Access Monitor started task is running on
    systems equipped with the IBM z Systems Integrated Information
    Processor(s) (zIIP), it still uses an excessive amount of the
    central processor time.
    

Problem conclusion

  • zSecure Access Monitor started task has been modified so that
    the amount of central processor time used by the software is
    reduced on systems equipped with IBM z Systems Integrated
    Information Processor(s) (zIIP). Please note the documentation
    changes as provided by the APAR tracking comment data.
    

Temporary fix

Comments

APAR Information

  • APAR number

    OA51549

  • Reported component name

    ZSEC BASE,ADMIN

  • Reported component ID

    5655T0100

  • Reported release

    220

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-10-28

  • Closed date

    2017-04-19

  • Last modified date

    2017-05-01

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

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

    UA83287 UA91582

Modules/Macros

  •    C2PACMON C2PAMSTS C2PCLEAN C2PENVLP C2PINIT
    C2POLICE C2PPRSRC C2PRACRT C2PRCY02 C2PRDY02 C2PRFY04 C2PRIY02
    C2PRPTHR C2PSMFPC C2PXINIT C2XACTV  HCKR220J HCKR221J
    

Fix information

  • Fixed component name

    ZSEC BASE,ADMIN

  • Fixed component ID

    5655T0100

Applicable component levels

  • R220 PSY UA83287

       UP17/04/21 P F704

  • R221 PSY UA91582

       UP17/04/21 P F704

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

[{"Business Unit":{"code":"BU048","label":"IBM Software"}, "Product":{"code":"SSCE68R","label":"zSecure Admin"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"220","Edition":""}]

Document Information

Modified date:
01 May 2017