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Windows Server 2012 R2 Hyper-V: Performance degradation

You operate your SAP application on Windows Server 2012 R2 Hyper-V?
Your SAP users complain about regressing performance when running CPU-intensive operations inside SAP?


Due to an issue in Windows Server 2012 R2 Hyper-V, CPU cores are parked in times of lower load, but cannot be unparked when needed, even if the Core Parking feature is disabled.

This issue leads to high performance regression in virtual machines hosted by this Hyper-V version.

Running SAP applications inside those virtual machines will lead to an experience of restricted performance.

Microsoft provided an update and a hotfix to resolve this issue. For details check Microsoft KB 3014069.


For a collection of recent issues related to the operation of SAP applications in virtual environments, check my 1DX community topic page for virtualization or my Wiki collection of recent issues.

2 Comments
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  • HI Claudia Baur ,

    Thanks for this Blog and Provided the Information we are Facing Lots Of Issue on DEV And Quality Server which is Running on Windows Server 2012 R2 – HYPER -V with the Physical RAM of 48GB but there is no any luck to reslove this issue .We have Apply the KB Patch also But the Error Remain the same .

     

    We have Upgrade our Oracle Database 12C

    SAP application on Windows Server 2012 R2 Hyper-V?
    Your SAP users complain about regressing performance when running CPU-intensive operations inside SAP?

    Any Solutions from sap Side we have Raise Sap OSS but no Luck

     

    Microsoft KB 3014069.

    Regards

    Bhavesh D Shah

    Sap Basis / Hana Certified

    • Hi Bhavesh,

      I am answering your question on behalf of Claudia.

      If you have installed KB 3014096 and its prerequisite (https://support.microsoft.com/help/2919355) and still observe issues please make sure you have enabled the “High Performance” power management profile on all your Hyper-V hosts. If you have “Balanced” enabled or your own power management profile that allows the CPUs to get in a lower power state this can have a massive performance impact on the VMs, too.
      Please check SAP Note 1246467 – Hyper-V Configuration Guidelines for this. If you have already done so and still see a performance degradation that you attribute to the Virtualization layer I would recommend to contact the Microsoft Support or your system vendor.

      Best Regards,

      Frank Hildenbrand