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macOS Sequoia Massive memory leak

So this seems to be an issue with all the recent macOS versions, the windowserver process just seems to eat more and more ram. Now when im running a single safari window with 5 tabs, mail, messages, notes, and onenote, the windowserver process i guess needs 5gb of ram to do its job. I rebooted, it started at 250mb, as soon as i start opening things it skyrockets. It seems to eat about 1gb per app window open. Closing the apps does not lower the processes ram usage. It will continue to grow with every app i open. I did a fresh reinstall of the OS, reinstalled all 3rd party apps by hand, of which i only use a few, and the issue persists. These numbers hold true on my m3 MBA with 16gb ram and my partners m1 base MBA. This is ridiculous Apple

Posted on Sep 19, 2024 4:38 PM

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Posted on Oct 6, 2024 9:51 PM

I found the Reason!


When the mouse passes over the top window special effect every time, Windowser would be larger and larger and won't be erased.

61 replies

Oct 13, 2024 5:12 AM in response to jessatd75

I'm no expert so this pennyworth might not be worth a penny but it is how I understand it:


Random Access Memory is memory instantly available for open programmes to use so having 8gb RAM and not using it all could be said to be a waste. I don't think that using it fills up the machine's "installed memory" where your photos and documents and apps are stored and, when you switch an app off, the RAM it was using becomes available for other tasks. The newer apps use more RAM because they do more but when they are not used they don't occupy the RAM memory space. I paid £400 extra to double the RAM on this M1 machine to 16gb and the money will have been wasted if it is not needed. If we notice a performance problem due to high RAM usage it might be time to upgrade to a more modern machine. Multi-tasking with a lot of open apps is a great idea but can our brains really cope with all that?

Oct 14, 2024 6:27 PM in response to dragontorc

No offense, but I’m using 2021 m1max with 64gb ram and 2t storage.


And windowserver process takes 13+gb memory after I quit all applications and services. When I put it away for one night, no memory was released. Also, no external display connected.


Before posting here, I’ve done several experiments and identify this issue is associated with iPhone mirroring.


Oct 14, 2024 10:55 AM in response to ahenk

I am astounded by the size of your Mail programme. Mine is:

I delete most communications except Family and Friends and my health, insurance, taxes and other personal business.

Are you the BBC or Microsoft or a spam factory? I am awed by the immense hoard of mail you have.

Perhaps you could move your historic, archival, emails to an external hard disk if you feel unable to bin them and that might free up more space for current work.

Nov 16, 2024 7:22 AM in response to jessatd75

So I had version 15.0 and everything was great. I'm now getting the problem after installing version 15.1. As someone here said, the problem is the OS in relation to USB-C and\or HDMI monitor connections. It's not one specific app. My particular problem is with the screensaver. My Citrix workspace App also but all that is irrelevant. I trying to figure out how to downgrade back to 15.0. No luck so far. Apple support said I would have to go back to Sonoma. Anyone found a solution yet?

Sep 22, 2024 4:23 PM in response to joelhz

Yesterday, again, I did a complete reinstall of the OS, had to restore it to Sonoma, upgrade to Sequoia, and the issue persists. Right now to test, I am not using ANY 3rd party apps, not even ones from the App Store. After 1.5 hours my windowserver process was 2gb.


So if this isn't a software issue it has to be a hardware issue. BUT I don't see how that's that case when in Sonoma with my current laptop I never say the windowserver process peak over 1gb and that was with 1 external 1440p displays and the integral display all running with tons of windows and apps open. Plus no other apps are running away, all are using only as much ram as they did in Sonoma. Maybe is a compatibility issue with my exact config? 13 MBA, M3, 16gb, 512gb.

macOS Sequoia Massive memory leak

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