Troubleshooting Why My Mac Was Slow: photoanalysisd

I woke my Mac after it had been sleeping for a while and I noticed it was slower than usual.  Clicking browser tabs felt like pushing through molasses.

I opened a Terminal window and typed: top, and immediately1 saw photoanalysisd consuming 95% CPU.  It showed no signs of letting up, after several minutes of watching it.

  • What was it doing?
  • Wasn’t photo analysis only supposed to happen when your Mac is idle or in PowerNap/sleep mode?

I opened Photos.  Now two CPU hungry processes were going: Photos itself and photoanalysisd.

After a quick web search, I went straight to the first hit at Stack Exchange, and found this gem:

  1. Start Photos, let it continue past the first dialogue box;
  2. Now Preferences in the app menu is clickable (if it wasn’t before);
  3. Preferences > General , and untick both check boxes in Memories;
  4. Close Photos.
    This stops photoanalysisd cold, no reboot or kill required.
uncheck-photoanalysisd.png
Untick these two boxes in Photos > Preferences > General > Memories

Not sure how this guy figured this out, but this tip worked great.  It did indeed stop photoanalysisd.  Hopefully this trouble won’t crop up again.

Leave a Reply

Please log in using one of these methods to post your comment:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s