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IJ14231: URH-END-IO-HANDLER CONSUMING CPU WITH FLASHCACHE NOT CONFIGURED

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APAR status

  • Closed as program error.

Error description

  • Flashcache thread URH-END-IO-Handler which is expected
    to remain idle when flashcache is not configured,
    consumes
    CPU sometimes. This can be observed by running
    performance
    monitoring tool.
    

Local fix

Problem summary

  • When Flashcache is not configured, URH-END-IO-Handler thread
    when receives some signal, it consumes CPU in spin.
    

Problem conclusion

  • Code fixed to avoid the CPU consumption
    

Temporary fix

Comments

APAR Information

  • APAR number

    IJ14231

  • Reported component name

    AIX V7.2

  • Reported component ID

    5765CD200

  • Reported release

    720

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2019-02-27

  • Closed date

    2019-06-06

  • Last modified date

    2019-07-16

Fix information

  • Fixed component name

    AIX V7.2

  • Fixed component ID

    5765CD200

Applicable component levels

[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSVEF8","label":"AIX 7.2 Enterprise Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"720","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11S","label":"APARs - AIX 7.2 environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"720","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
16 July 2019