5 ms·

contactsd was burning 100% of a core for years for me until a recent update.

• bborud 3y ago
  ....and as if on cue, contactsd started consuming lots of CPU on my machine. Goddamnit you jinxed me. :)
• jjtheblunt 3y ago
  It’s pretty wild, considering that I haven’t had any of those issues and I’m on Apple stuff continually all the way back to next step days. I guess I’ve just had good luck in comparison.
  • mcculley 3y ago
    I am certain that it is because I have a large address book and one or more cards exposed a bug. I expect that people with simpler address books (almost all users) never saw this. I reported it to Apple and never heard anything back, as expected. If you google, you will find others reporting the same misbehavior.
    • jjtheblunt 3y ago
      Have you tried turning off syncing of contacts with Gmail accounts/Outlook/Exchange servers, just as an experiment? Perhaps there's some protocol mismatch between contactsd and external ldap or whatever they use servers. I thought of this not because of a cpu core craziness, but a strange symptom i had for many months. On one of my macs i could see known people only as their phone numbers, and on another mac i saw their names: i had contact syncing settings toggled on/off differently between the two macs, wrt Gmail and Outlook servers (and i didn't realize i'd put any contacts on those servers...thought they were all in MacOS contacts).
      • mcculley 3y ago
        I was not synchronizing with anything but iCloud. Before the recent update that fixed it, I was in the habit of disabling WiFi when on battery so that my laptop would not drain my battery. contactsd definitely was doing something dumb around synchronization. At one point, I backed up my ~8,000 contacts and deleted them all. Everything was fine until I restored them.