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Vmmem CPU and memory usage on Startup

Anonymous
2019-12-08T00:07:53+00:00

I run Windows 10 1909 on a Surface Pro 3 with an i7 -4650U CPU. On startup I am experiencing high CPU usage (>50%) and high memory usage (>1GB) for a process called Vmmem. This has started just recently. Why is this happening, can I fix it?

Surface | Surface Pro | Power and battery

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  1. Anonymous
    2020-01-01T03:25:42+00:00

    Hi,

    I thought I'd log the solution to my problem.

    In further research I can across a reference to the performance monitor report (cmd (admin), run perfmon /report).

    This reported a failure on the System Service Checks, with 3 abnormally terminated services:

    1. Container Manager Service (CmService);
    2. HV Host Service (HvHost) and
    3. Application Guard Container Service (hvsics).

    I tracked these down as being used (amongst other things) by the Windows Defender Application Guard (https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-guard/reqs-wd-app-guard) which appeared to me to be an enterprise deployed feature with some complex requirements (well at least to me).

    I went to Windows Features and noted the Windows Defender Application Guard was selected (I have a vague memory of doing that). I deselected the feature and rebooted. On rerunning the perfmon /report again I got an all clear on the System Service Checks. Checking Services status only the HvHost service of the 3 above is now listed and as a manual trigger and not started.

    That was yesterday. So far everything seems to be running as previously, Edge loads reasonably quickly and logon to ready is now only a few seconds vs over 30 seconds previously.

    Hope this information is of help.

    Regards.

    Andy

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  2. Barb Bowman 80,785 Reputation points MVP Volunteer Moderator
    2020-01-01T11:02:40+00:00

    Glad you resolved this.

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  3. Barb Bowman 80,785 Reputation points MVP Volunteer Moderator
    2019-12-08T10:11:23+00:00

    Are you running Virtual machines or using virtualization? See

    https://devblogs.microsoft.com/oldnewthing/20180717-00/?p=99265

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  4. Barb Bowman 80,785 Reputation points MVP Volunteer Moderator
    2019-12-09T10:48:09+00:00

    Don't mess with Secure Boot or Encryption - this is not the issue. When you say

    it is high usage on startup, does CPU and memory usage drop after a few minutes

    or not?

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  5. Anonymous
    2019-12-09T03:05:41+00:00

    Hi, thanks for replying.

    In response to your question:

    Turn Windows features on or off shows Hyper-V is not selected.

    Task Manager>Processes shows the following processes running:

    Hyper-V Host Compute Service

    Virtual Machine Worker Process

    Vmmem

    Service Host: HV Host Service

    Service Host: Network Virtualization Service (?)

    Task Manager>Services shows the following services:

    Hyper-V Host Compute Service, Running

    Hyper-V Guest Service Interface, Stopped

    Hyper-V Heartbeat Service, Stopped

    Hyper-V Data Exchange Service, Stopped

    Hyper-V Remote Desktop Virtualization Service, Stopped

    Hyper-V Guest Shutdown Service, Stopped

    Hyper-V Time Synchronization Service, Stopped

    Hyper-V PowerShell Direct Service, Stopped

    Hyper-V Volume Shadow Copy Requestor, Stopped

    Task Manager> Performance>CPU has Virtualisation: Enabled.

    I have never intentionally activated Hyper-V. However, I understand the security feature Secure Boot (Settings>Update & Security>Windows Security>Device Security>Secure Boot) uses Hyper-V. Secure Boot is set on on my PC. I have tried to set it off but it wanted to de-encrypt my drives to do that. Something I'd prefer not to do.  I don't know how Secure Boot was set but it seems like a useful feature to keep.

    To the best of my recollection, this issue only arose after Windows 10 1909 was installed on my PC on November 15th last.

    Thanks in advance for any help you can give.

    Regards.

    Andy

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