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Runtime Information ETW Events

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These ETW events log information about the runtime, including the SKU, version number, the manner in which the runtime was activated, the command-line parameters it was started with, the GUID (if applicable), and other relevant information. If multiple runtimes are executing within a process, the information provided by these events (the ClrInstanceID) helps disambiguate the runtimes.

The following table shows the two runtime information events. The events can be raised under any keyword or mask. (For more information, see CLR ETW Keywords and Levels.)

Event Event ID Provider Description
RuntimeInformationEvent 187 CLRRuntime Raised when a runtime is loaded.
RuntimeInformationDCStart 187 CLRRundown Enumerates the runtimes that are loaded.

The following table shows event data.

Field name Data type Description
ClrInstanceID win:UInt16 Unique ID for the instance of CLR or CoreCLR.
Sku win:UInt16 1 – Desktop CLR.

2 – CoreCLR.
BclVersion – Major Version win:UInt16 Major version of mscorlib.dll.
BclVersion – Minor Version win:UInt16 Minor version number of mscorlib.dll.
BclVersion – Build Number win:UInt16 Build number of mscorlib.dll.
BclVersion – QFE win:UInt16 Hotfix version number of mscorlib.dll.
VMVersion – Major Version win:UInt16 Version of clr.dll or coreclr.dll, depending on SKU.
VMVersion – Minor Version win:UInt16 Minor version of clr.dll or coreclr.dll, depending on SKU.
VMVersion – Build Number win:UInt16 Build number of clr.dll or coreclr.dll.
VMVersion – QFE win:UInt16 Hotfix version number of clr.dll or coreclr.dll.
StartupFlags win:UInt32 Startup flags defined in mscoree.h.
StartupMode win:UInt8 0x01 - Managed executable.

0x02 - Hosted CLR.

0x04 - C++ managed interop.

0x08 - COM-activated.

0x10 - Other.
CommandLine win:UnicodeString Non-null only if StartupMode=0x01.
ComObjectGUID win:GUID Non-null only if StartupMode=0x08.
RuntimeDLLPath win:UnicodeString Path to the CLR .dll file that was loaded into the process.

See also