com.apple.mediaanalysisd files filling drive in macOS 15.1

I am observing a similar anomalous problem with the mediaanalysisd process. I have an empty library of photos, but when I have a closed mac (I use aldente so it doesn't go to sleep) this process starts to load 1 core of the CPU completely for almost the whole period of the closed lid, in previous versions of OC this problem didn't happen at all, but support just said to erase SSD and reinstall macos =) (I don't think it will help)

I just want to know what process or event is causing this behavior, but support also couldn't tell me how to see it.

The problem spreads even in safe mode if you specify

sudo pmset -disablesleep 1

Below I attach a log file that was kept with a bash script (just recording the 5 most used processes every 10 seconds) all night long (only fit half)

Same here. Mine's at 47GB today. It was 45GB yesterday.

If this continues, the Mac SSD will run out of space very soon. Need a solution for this ASAP.

mediaanalysisd and photoslibraryd are background processes which go through and analyze a new or updated Photos library when the Mac is otherwise idling. With large 500 GB libraries with 50 000 images and thousands of movies that might take a week or more. Set the Mac to never sleep (allow the screen to turn off, setting the library as system library might also help) and let the Mac be on day and night until those processes are done. Or move the library to an external APFS or MacOS extended disk.

Does mediaanalysisd cause that issue if you create a dummy new user and login to that account? If, that helps, you might try if moving the following preference file to the Desktop, and then rebooting helps (backup first, just in case):

~/Library/Preferences/com.apple.mediaanalysisd.plist

...there is another preference but handling it is more involved and I would not lightly fiddle that:

/System/Library/LaunchAgents/com.apple.mediaanalysisd.plist

looks to have been tidied up in 15.2, my 18GB is now 344MB

and the total System Data has reduced from 130GB to 27GB so other things must have been done

however still got an issue with the size of utmapp as 28GB

Hopefully that will happen. I noticed today I have only 88 MB of free space on my M1 MacMini. It turned out com.apple.mediaanalysisd is about 23 GB as of now.