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PM40746: 'Measured packet jitter is 1199176 milliseconds greater than expected' error for RPT HTTP recording

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • 'Measured packet jitter is 1199176 milliseconds greater than
    expected' error for RPT HTTP recording
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    On some systems, (virtual for example), the machine
    performance counter loops on 32 bits instead of using 64
    bits. Read timestamps become negative, and the test
    generation fails when trying to reorder recorded packets.
    

Problem conclusion

  • If RPT finds the -DrecorderCore32BitsClock=True setting in
    the eclipse.ini, it will detect such environments and adjust
    the timestamps so they won't become negative. This is not
    active by default to avoid unnecessary overhead in normal
    cases.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM40746

  • Reported component name

    PERF TESTER WIN

  • Reported component ID

    5724J9601

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-06-03

  • Closed date

    2011-11-11

  • Last modified date

    2011-11-11

  • 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

    PERF TESTER WIN

  • Fixed component ID

    5724J9601

Applicable component levels

  • R800 PSN

       UP



Document information

More support for: Rational Performance Tester

Software version: 8.0

Reference #: PM40746

Modified date: 11 November 2011