vCenter Server performance issues after increasing memory
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vCenter Server performance issues after increasing memory


Article ID: 326220


Updated On:


VMware vCenter Server


Update the memStopInMB to the updated memory limit in the vCenter Server.

    The vCenter Server’s performance is deteriorated after the memory allocated to vCenter Server is increased.


    VMware vCenter Server 6.0.x


    The memStopInMB parameter in the vCenter Server is not automatically updated when more memory is allocated to the machine.
    Note: This issue does not occur on the vCenter Server Appliance.


    The issue is resolved in vCenter Server 6.0 Update 3, available at VMware Downloads. For more information, see VMware vCenter Server 6.0 Update 3 Release Notes.

    To workaround the issue, determine the appropriate value for memStopInMB and then configure.

    To determine the new value for memStopInMB
    1. Open a Windows command prompt.
    2. Navigate to C:\Program Files\VMware\vCenter Server\visl-integration\usr\sbin with this command:

      cd C:\Program Files\VMware\vCenter Server\visl-integration\usr\sbin

    3. Run this command to determine the correct value for memStopInMB:

      .\cloudvm-ram-size.bat vpxd

    Adjusting the memStopInMB parameter in the vCenter Server
    1. Connect to the vCenter Server using the vSphere Client and administrator credentials.
    2. Select Administration > vCenter Server Settings.
    3. Select Advanced Settings.
    4. Select Edit...
    5. Change the value of the config.vpxd.memChecker.memStopInMB key to the number returned by the cloudvm-ram-size utility.
    6. Click OK.
    7. Restart the vCenter Server services. For more information, see:

    Additional Information

    How to stop, start, or restart vCenter Server 6.x services
    增加内存后 vCenter Server 出现的性能问题