IBM Support

IJ16941: OFFENSES CAN FAIL TO GENERATE WHEN EXPECTED, WHEN SPILLOVER FROMMEMORY TO DISK DURING CACHING OCCURS

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APAR status

  • Closed as program error.

Error description

  • It has been identified that Offenses can be slow to generate or
    fail to generate when expected when QRadar experiences a cache
    spillover from memory to disk.
    Messages similar to the following might be visible in
    /var/log/qradar.log when this specifc issue is occurring:
    [ecs-ep.ecs-ep] [MPC/PersisterThread@0000050540]
    com.q1labs.frameworks.cache.ChainAppendCache: [WARN]
    [NOT:0000004000][127.0.0.1/- -] [-/- -]TargetIPtoID is
    experiencing heavy COLLISIONS exceeding configured threshold
    (this may have negative performance impact) threshold = 5.0
    average collisions = 7.0
    [ecs-ep.ecs-ep] [MPC/PersisterThread@0000050540]
    com.q1labs.frameworks.cache.ChainAppendCache: [WARN]
    [NOT:0000004000][127.0.0.1/- -] [-/- -]LightTarget is
    experiencing heavy COLLISIONS exceeding configured threshold
    (this may have negative performance impact) threshold = 5.0
    average collisions = 6.0
    

Local fix

  • No workaround available.
    

Problem summary

  • This issue was fixed in QRadar QRM QVM release of 7.3.2 Patch 4.
    

Problem conclusion

  • This issue was fixed in QRadar QRM QVM release of 7.3.2 Patch 4.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IJ16941

  • 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

    2019-06-17

  • Closed date

    2019-08-16

  • Last modified date

    2019-08-16

  • 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:
16 August 2019