The callservicesd memory leak issue seems to occur more often with macOS Monterey, typically after a Zoom or FaceTime group call.
When callservicesd is working well, it usually consumes no CPU and around 8MB of memory. You can find it in Macintosh HD/System/Library/PrivateFrameworks/amework/callservicesd.
So, it's closely related to apps such as Contacts, Messages, FaceTime, Zoom, etc. MacOS callserviced is a system daemon that's used for maintaining call state. callservicesd wants to use the login keychain Check out CalendarAgent,, cfprefsd, and cloudd. Tips: There are many macOS processes working in the background to maintain your Mac's smooth running.
