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IT24941: A LOG TARGET STATUS MEMORY VALUE IS NOT CORRECT, ALWAYS BEING TOO LOW

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • The user observed slowly increasing memory usage but struggled
    to pinpoint which part of configuration or traffic caused this.
    It turned out that having log target Identical Event Detection
    enabled, especially in combination with log target type
    syslog-tcp, did hold memory for a long time, as in this
    specific scenario many unique log records got created and where
    hold even beyond the Identical Event Detection timeout.
    It turned out this part of hold memory is not captured in the
    log target status provider, so customer could not pinpoint this
    specific log target to be the driver.
    

Local fix

  • Either shortly disable/enable the log target object to reclaim
    hold memory,
    or do not use Identical Event Detection (a preferred practice
    anyway to safe resources on DataPower),
    or more specifically don't use Identical Event Detection if the
    log target type is syslog-tcp.
    

Problem summary

  • The logging target status might not reflect actual memory used.
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    IT24941

  • Reported component name

    DATAPOWER

  • Reported component ID

    DP1234567

  • Reported release

    720

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-05-03

  • Closed date

    2018-07-17

  • Last modified date

    2018-07-25

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

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

Fix information

  • Fixed component name

    DATAPOWER

  • Fixed component ID

    DP1234567

Applicable component levels

  • R750 PSY

       UP

  • R751 PSY

       UP

  • R752 PSY

       UP

  • R760 PSY

       UP

  • R770 PSY

       UP



Document information

More support for: IBM DataPower Gateways
General

Software version: 7.2

Reference #: IT24941

Modified date: 25 July 2018