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Boot metrics with fast boot enabled

I have significant gaps in my boot metrics and I suspect it is due to fast startup being enabled on my Windows 10 desktops.

 

Is this assumption correct, and if so, is it possible to capture metrics from a Windows 10 device with fast startup enabled?

3 comments

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    Dominik Britz

    Hi Michael,

    Could you specify what is missing? The metrics TotalBootTimeMs, MainPathBootTimeMs and PostBootTimeMs cannot be determined for every system boot, as stated in our release notes.

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    Michael McGuinness

    Those are the metrics missing - I must have missed this known issue.  Is the cause of these elements being missing known?  Also, am I correct that fast startup impacts metric collection or is it something else that we can mitigate?

     

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    Dominik Britz

    This happens the more often, the faster a machine starts up. A VM on an SSD without much software installed is most likely to be affected.

    uberAgent uses an event log as data source. This log is created automatically by Windows during and shortly after startup. When this issue occurs, the log simply has no events from after the login prompt.

    As for the fast startup. In a fast startup scenario, session 0 (=system) is frozen and only the user session is logged off. Technically, there is no complete restart. As a result, uberAgent does not recognize any.

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