Debug level logging is required. No need for verbose logs (adds too much information, logs wrap quickly, desired info lost).
Settings → Server_Name → General.
Look in Plex Media Server.log and rollovers, .1.log to .5.log.
Scheduled tasks show up as “Butler tasks” in the log files.
Search for lines with DEBUG - Butler:.
From PMS on my Synology DS918+ this morning.
Tasks starting:
Apr 28, 2024 04:00:08.018 [139794145901368] DEBUG - Butler: we're in the window, starting.
Apr 28, 2024 04:00:08.018 [139794145901368] DEBUG - Butler: Waking up!
When library scanning begins:
Apr 28, 2024 04:00:14.038 [139794182593336] DEBUG - Butler: refreshed all libraries
Apr 28, 2024 04:00:14.043 [139794194402104] DEBUG - Activity: registered new activity d3f8920a-5d10-4585-8f6d-304cccf21d05 - "Scanning"
Apr 28, 2024 04:00:14.047 [139794194402104] DEBUG - Scanning section 227
Apr 28, 2024 04:00:14.072 [139794194402104] DEBUG - Activity: updated activity d3f8920a-5d10-4585-8f6d-304cccf21d05 - completed 0.0% - Scanning Movies
Finishes scanning movies:
Apr 28, 2024 04:00:32.901 [139794194402104] DEBUG - Activity: updated activity d3f8920a-5d10-4585-8f6d-304cccf21d05 - completed 100.0% - Scanning Movies
It then proceeds to scan the rest of the libraries on the server.
Depending on which scheduled tasks are enabled, you may see entries for intro detection, sonic analysis of music, etc.
Butler tasks finished:
Apr 28, 2024 09:06:35.137 [139794182593336] DEBUG - Butler: Done doing work.
Scheduled task window closes:
Apr 28, 2024 12:00:08.125 [139794118605624] DEBUG - Butler: we're outside the window, stopping.