IBM Support

IJ14133: INCORRECT RX AND TX RING BUFFER SETTINGS CAN CAUSE PERFORMANCE ISSUES ON BOND0 OR BOND1 MANAGEMENT INTERFACES

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APAR status

  • Closed as program error.

Error description

  • It has been identified that using bond0 for a QRadar management
    interface or bond1 for a crossover interface can have ethtool
    incorrectly set hardware parameters for the NIC driver tx and
    rx ring buffers for the bond interface instead of the
    underlying slave interfaces.
    As it is the actual slave interfaces that have the hardware
    parameters set, and it possible to bond different NICs
    (Broadcom, Intel 1 GB, Intel 10Gb), etc., in some cases the
    hardware interfaces will default to boot up driver values.
    Intel NICs can sometimes default to a setting of 256 out of
    4096 for both tx and rx ring buffer settings.
    When this situation occurs, SAR sentinel - threshold crossed
    messages referencing dropped packets or other performance
    related issues can sometimes be observed with QRadar.
    

Local fix

  • Contact Support for a possible workaround that might address
    this issue in some instances.
    

Problem summary

  • This issue was fixed in QRadar QRM QVM release of 7.3.3 GA and
    7.3.2 Patch 6.
    

Problem conclusion

  • This issue was fixed in QRadar QRM QVM release of 7.3.3 GA and
    7.3.2 Patch 6.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IJ14133

  • Reported component name

    QRADAR SOFTWARE

  • Reported component ID

    5725QRDSW

  • Reported release

    728

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-02-25

  • Closed date

    2019-12-08

  • Last modified date

    2020-01-09

  • 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

    QRADAR SOFTWARE

  • Fixed component ID

    5725QRDSW

Applicable component levels

[{"Business Unit":{"code":"BU048","label":"IBM Software"}, "Product":{"code":"SSBQAC","label":"IBM Security QRadar SIEM"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"728","Edition":""}]

Document Information

Modified date:
09 January 2020