That really is a big difference between our runs, and I definitely think it would be disk-bound. For the above set of packages (not that different from your selection), it takes me around 50 sec to completely discover the tests.

I'll open a separate issue about that later then, thanks!

Originally posted by @FMorschel in #5929

The extension profile trace:

• CPU-20260226T141050.848Z.cpuprofile.txt