Monterey introduced many new features and processes.
One of the new processes is called triald and no one, including the people at Apple support, know what it does. Whatever it is doing, it is using a ton of CPU doing it.
Anyone have any information?? Google Search only confirms that no one knows what it does.
Just speculating, but I wonder if it has something to do with Siri?
If I open ~/Library/Trial and then the subfolder Treatments, there is a bunch of reference to Siri.
Not sure whether you saw this ASC posting, but it’s described as Apple A/B testing here and in a couple of other references "triald" process preventing sleep on Mac … - Apple Community. It’s about a year and a half old and started there with Big Sur, so it’s not a new Monterey process. Speculation that it’s part of iOS framework. Seems to be associated with at least Cellular and WiFi. Since Monterey allows you to run iOS apps, I suppose it could have something to do with that, but AFAIK it was never a Big Sur feature.
I did go into Siri preferences and deleted the Siri dictation and search history. Apparently, Siri keeps all the stuff the user asks about for who knows how long.
But I deleted all of it with one click and the triald CPU use problem went away. For now.
Interesting suggestion to remove the ~/Library/Trial folder from Time Machine backups, on my laptop, the folder is 1.8 GB.