I'm not sure about the specifics, but I'm filing this issue as a placeholder.

When I made the change in #299 to process unmerged ETL files, this changed the behavior of some of @vvuk's CoreCLR integration code. Specifically, the names we get when we read the unmerged ETL file are different from the names we expect.

For example, for Microsoft-Windows-DotNETRuntimeRundown/CLRMethodRundown/MethodDCStartVerbose, we currently instead get the name Microsoft-Windows-DotNETRuntimeRundown/Method /DCStartVerbose (including the space) from the unmerged ETL.

As a workaround, one could create merged ETL file manually and feed it into samply import.

Vlad had some ideas for what might be needed to fix this, but I forgot the specifics. If someone wants to dig into this, I can try to find his message in the https://chat.mozilla.org/#/room/#profiler:mozilla.org backscroll.