Examples on Capturing Snapshots Using Trace Profiles

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The following examples turn on several ETW sessions and merge them into a single trace file as needed.

Memory-based trace profile

For an in-memory repeated snapshots trace profile, run the following command:

xperf -start perf!GeneralProfiles.InBuffer

Run some scenario, and then issue the following command:

xperf -save perf!GeneralProfiles.InBuffer snapshot1.etl

You can, optionally, continue saving additional snapshots, and then stop the trace capturing with the following command:

xperf -cancel perf!GeneralProfiles.InBuffer.InBuffer

File-based trace profile

For a file-based trace profile, use following command:

xperf -start perf!RegistryProfiles.InSequentialFile

Run some scenario, and then issue the following command to stop trace capturing:

xperf -stop perf!RegistryProfiles.InSequentialFile trace.etl

Extending Profile Definitions

Profile definitions can be extended and composed using a script-based inheritance model, as explained earlier in this document, as well as immediately using the command line. For example, to add ReadyThread stacks to the perf!FileIOProfiles.InSequentialFile, run the following command:

xperf -start perf!FileIOProfiles.InSequentialFile -stackwalk ReadyThread