XE_BUFFERMGR_FREEBUF_EVENT WAITS

Hi, my Foglight is generating a lot of XE_BUFFERMGR_FREEBUF_EVENT waits in one of our SQL instance, causing a bad performance in some apps. Can I set up Foglight in anyway to avoid this waits?

Thanks

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  • Hello Miguel Angel,

    I have not heard about such an issue yet. 

    Does this happen in a monitored SQL Server instance or the instance which you are using as the Foglight backend DB?

    When you stop the DB agent, do these wait events decrease?

    According to Microsoft documentation, these waits occur when either of the following conditions is true:

    • An Extended Events session is configured for no event loss, and all buffers in the session are currently full. This can indicate that the buffers for an Extended Events session are too small, or should be partitioned.
    • Audits experience a delay. This can indicate a disk bottleneck on the drive where the audits are written. 

    Did you check the SQL Server logs for further information?

    I would recommend opening a Service Request and then Quest support can investigate, what is going on. To raise a Service Request, look at here: https://support.quest.com/create-service-request

    Kind Regards

    Nicola

Reply
  • Hello Miguel Angel,

    I have not heard about such an issue yet. 

    Does this happen in a monitored SQL Server instance or the instance which you are using as the Foglight backend DB?

    When you stop the DB agent, do these wait events decrease?

    According to Microsoft documentation, these waits occur when either of the following conditions is true:

    • An Extended Events session is configured for no event loss, and all buffers in the session are currently full. This can indicate that the buffers for an Extended Events session are too small, or should be partitioned.
    • Audits experience a delay. This can indicate a disk bottleneck on the drive where the audits are written. 

    Did you check the SQL Server logs for further information?

    I would recommend opening a Service Request and then Quest support can investigate, what is going on. To raise a Service Request, look at here: https://support.quest.com/create-service-request

    Kind Regards

    Nicola

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