spotlightknowledged consumes over 40 GB RAM after sleep even on macOS 26.1 (Tahoe)

Hi everyone,

I’m still facing a persistent SpotlightKnowledge memory leak issue on macOS 26.1 (Tahoe) running on a MacBook Air M4.


Every time my Mac goes to sleep (screen off or lid closed), the process spotlightknowledged starts consuming extremely high memory — often 30–45 GB or more according to Activity Monitor.


When I wake the laptop, it becomes very slow or laggy until I manually Force Quit spotlightknowledged. The memory is never released automatically.

I have already tried the following without success:

  • Rebuilt Spotlight index using sudo mdutil -E /
  • Deleted and rebuilt SpotlightKnowledge caches:
    • ~/Library/Application Support/com.apple.spotlightknowledge/
    • ~/Library/Metadata/CoreSpotlight/SpotlightKnowledgeEvents/
  • Excluded OneDrive and iCloud folders from Spotlight indexing
  • Disabled Power Nap (sudo pmset -a powernap 0)

Despite all of this, the problem reappears every time the Mac sleeps.

Using fs_usage, I noticed that during the memory spike the process loops on its own metadata files:


/Users/[username]/Library/Metadata/CoreSpotlight/SpotlightKnowledgeEvents/index.v2/events/
/Users/[username]/Library/Metadata/CoreSpotlight/SpotlightKnowledgeEvents/index.v2/journals/


This seems to indicate an internal SpotlightKnowledge loop or memory leak rather than normal file indexing activity.

At this point, the only temporary workaround is to manually force quit the process after each wake, which is inconvenient.

Question:

  • Is there any official Apple method to prevent spotlightknowledged from running during sleep or to safely disable the Knowledge Agent without turning off System Integrity Protection (SIP)?
  • Has Apple acknowledged this as a known issue in macOS 26.1?


I’d appreciate any insights, workarounds, or confirmation from others experiencing the same problem.

— bieeyx


MacBook Air 13″, macOS 26.1

Posted on Nov 10, 2025 8:46 PM

Reply
1 reply

Nov 11, 2025 5:18 AM in response to bieeyx

A couple tests to try:


-First, run Disk First Aid on the mounted volume. Perhaps there is some corruption causing the issue.

-add your user folder to the Search Privacy... list in Spotlight settings. This could determine if the is some "bad" file or folder in that Spotlight for some reason may have an issue with or may be constantly changing triggering Spotlight to spawn multiple threads. Spotlight should skip bad files but if something is constantly changing..

-Along the same lines, disconnect any external drives that you may have attached.

-Also, select the Disk tab in Activity Monitor to see if there are excessive disk writes. Be sure to select "Show All Processes".

-While likely not an issue, keep an eye on network activity in Activity Monitor to see if some app is downloading a bunch of stuff.



spotlightknowledged consumes over 40 GB RAM after sleep even on macOS 26.1 (Tahoe)

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