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IV58615: HEAVY MESSAGE QUEUE USAGE RESULTS IN HEAVY LOCKING APPLIES TO AIX 6100-09

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

  • Heavy usage of the ipcs message queue subsystem results
    in %system significantly exceeding %user.
    

Local fix

Problem summary

  • performance issue with message queues under stress due to
    message heap lock contention
    

Problem conclusion

  • Increase the number of message heaps from 4 to 16 to decrease
    message heaps lock contention.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV58615

  • Reported component name

    AIX 610 STD EDI

  • Reported component ID

    5765G6200

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-04-02

  • Closed date

    2014-04-02

  • Last modified date

    2014-05-22

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

    IV52165

  • 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 U859304

       UP14/05/21 I 1000

PTF to Fileset Mapping



Document information

More support for: AIX Enterprise Edition

Software version: 610

Operating system(s): AIX

Reference #: IV58615

Modified date: 22 May 2014