Time profiler in instruments is not working

Question

I recently update my Xcode to version 9.3, so is instruments. After that, time profiler won\'t work anymore, it usually works fine before.

I tried to run it via Xcode, a

Answer 1

I was hitting the same issue for a week.

Since today, I change the Xcode Version back to Xcode 9.2 - and the problem was resolved.

It seems like this is a bug of Xcode 9.3, I just filed an issue to Apple yesterday. No reply has been received.