I had last year created (quite successfully) my own custom instrument using os_signpost.
Yesterday I went to run it again for the first time in several months, and discovered that nothing is being recorded in Instruments.
I added the plain os_log and os_signpost instruments, and I see that the system's intervals and logs appear, but none of mine.
When I run the app (an iOS app) in the debugger, all the os_logs appear, so thay are being created.
So, has some setting been added or changed in a recent Xcode or Instruments release that I somehow missed?
I tried rebuilding the instrument in the latest Xcode, to no effect.
This issue has been resolved in Instruments 11.4.1, released today. It has been release noted. Thank you very much for reporting it on the forums and sorry for your inconvenience.
We believe it was only an issue in simulators, so if you're facing issue like that on the device — please let us know!