Looking at the "BiosInitTime" from ETW events parsed using "tracerpt.exe" and I noticed for hibernate/S4 resume it's always 0 (see example at the end). The same happened with etl traces collected directly using XPERF or via ADK Windows Assessment Console. But via WAC/WPA analysis & GUI, the BIOS will be shown. So it appears the information is there but "tracerpt.exe" is parsing the wrong events to calculate "BiosInitTime".
What specific start/stop events I should check to calculate the Bios Init Time via etl trace, say, using xperf?
Thanks
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Kernel-Power" Guid="{331c3b3a-2005-44c2-ac5e-77220c37d6b4}" />
<EventID>39</EventID>
<Version>0</Version>
<Level>4</Level>
<Task>33</Task>
<Opcode>0</Opcode>
<Keywords>0x400000000000000C</Keywords>
<TimeCreated SystemTime="2016-02-03T15:08:43.601479000Z" />
<Correlation ActivityID="{00000000-0000-0000-0000-000000000000}" />
<Execution ProcessID="4" ThreadID="3140" ProcessorID="0" KernelTime="180" UserTime="0" />
<Channel>Microsoft-Windows-Kernel-Power/Diagnostic</Channel>
<Computer />
</System>
<EventData>
<Data Name="SleepTime"> 1546</Data>
<Data Name="ResumeTime"> 769</Data>
<Data Name="DriverWakeTime"> 715</Data>
<Data Name="HiberWriteTime"> 2999</Data>
<Data Name="HiberReadTime"> 1862</Data>
<Data Name="HiberPagesWritten"> 148964</Data>
**<Data Name="BiosInitTime"> 0</Data>**
</EventData>
<RenderingInfo Culture="en-US">
<Level>Information </Level>
<Opcode>Info </Opcode>
<Keywords>
<Keyword>po:Diagnostic</Keyword>
<Keyword>po:Performance</Keyword>
</Keywords>
<Task>PowerTransition</Task>
<Channel>Microsoft-Windows-Kernel-Power/Diagnostic</Channel>
<Provider>Microsoft-Windows-Kernel-Power </Provider>
</RenderingInfo>