Supposedly, it only runs when a) the machine is plugged in and b) Photos isn't running. There are seemingly very few ways to actually get it to stop or even pause. For a feature I imagine a lot of people either don't want or don't care about having on every device with Photos. This should not be the only location to learn about something that is using days of CPU time. The only mention of "photoanalysisd" is in Activity Monitor. On top of that, it is almost impossible for a normal user to learn this is going on. Usually not enough to notice, but seems like it might cause someone to be less than impressed with their brand new device if they didn't know this was going on. This causes the fanless machine to constantly stay pretty warm and chug on some things. It does use about 25% of the CPUs constantly. Many people complain about their way more powerful iMacs taking weeks to go through libraries of similar size.ĭuring this process, the machine is still usable, but it doesn't go unnoticed. I have a medium size photo library (~10k) and after a few hours on the 12" i5 MacBook, it has managed to go through almost 300 of them. I never plan to use the People tab, yet my machine still has to painstakingly go through my entire library. The main issue seems to be that you have no control over this process. It uses a good amount of resources, but doesn't try to fully harness the machine since it is meant to be a background process that occurs over the course of days. The sorts of analysis its doing is probably computationally intense. On the surface, this shouldn't be an issue. The only exception seems to be if you have a photo library barely into or lower than quadruple digits. Even if you have a fairly beefy machine, this process takes a long time. If you go into the People tab of Photos before it is done analyzing, you will see its progress. Or, in this case, how it seems to control your machine. What is not so good is the level of control you have around if/when/how this service is controlled. The fact that this happens on your machine and each of your machines is a good thing! There may be some things that get sent off to Apple, but the majority of the work seems to be happening on your hardware. This service is directly tied to the "People" tab in Photos (more on this in a moment). For the most part, it seems like it is trying to recognize people. This is a background service that, as the name implies, is responsible for analyzing your photos. Specifically, a process called photoanalysisd. However, the one I am not so fine with is Photos. All of Apple's stuff in particular has a lot to do and I'm fine with that. Naturally, I expect most applications to take a little bit to sync down settings, files, etc. I like to take the time to try and simplify what I've got on my machine. I decided to set it up fresh instead of restoring from a backup.
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