After upgrading to Sonoma I keep getting "Your system has run out of application memory" messages

There are separate "Mail web content" processes for different messages, and this case just one "Mail web content" using all those GB. This suggests a badly formed message using web content may have thrown Mail into a bug.

This, of course, should not happen. There may be a bug in how some of that content is processed in Mail, and perhaps a poorly crafted or maliciously done message can cause this.

Open Activity Monitor and check Memory.

The top part of it.

There's a list of all your apps, and how much they are using.

and check at the bottom,

8GB is really not enough to memory hog apps. Such Macs are good enough for light usage, such as web browsing, watching videos and so on. You might be able to use MS Excel, a memory hog app, but you'd have to quit Safari, for example. Instead of MX Excel, why not use the native Numbers app, and convert the result to MS Excel for school/work usage with other people.

have no any antivirus or cleaners

There's clearly something messed up. Same here. Using a Mac Mini M2 just like before, same applications. Now I get the pop message all the time.

Single webpages are consuming from 300MB up to 1GB. The websites didn't change. The content I consume quite not did change. But all the native applications are messed up.

kyrnois wrote:

But this has never happened in the past, so again, clearly an issue with the OS update and not the amount of photos or videos in the Photos app.

I actually found the upgrades are doing well for my MBP, which is an intel one, a 2018 model, made in 2019. In Storage, macOS and the System Data are nearly equal, which is how it should be.

I have somewhat bigger Documents directory, 14.55 GB and Applications, 16.21 GB, but the most important factor is that the macOS and the System Data are nearly equal. I don't do anything special to keep them that way. It is done by macOS. But, old habits make me keep other stuff in a regulated way. For example, if I want to check a 3rd party app, I do that for I am curious, but when I uninstall it, I get rid of the residue too. Of course, I don't use any modifier apps, any VPNs or any antivirus apps. The macOS is quite safe by itself.

But, if you find something wrong with your system, please send a feedback to Apple, using Feedback Assistant.

Not enough space in the memory for MacOS to work well,

Quit some apps.

But you don't have enough RAM free. You've used 91% of it. No wonder, the MBA gets stuck!

lumen131 wrote:

The issue on my end (MBP 2023 16" M2 Pro 32GB) is entirely Safari based.

Would you mind sending a feedback to Apple?

Oh, Apple won't send you a reply, but they'd surely read the feedback. Anyway, regarding your "problem" you should quit a few apps to have more free RAM space.

I have same issue also, with my Intel i5 processor and 16gb memory

ONLY since Sonoma upgrade

It seems addressbooksync is taking up 9.7gb for me :(

hi , I have the same issue. MacBook Pro 14 (M1 16 GB RAM). Everything running swimmingly until upgrading to Sonoma OS – Now I'm getting repeated "Your system has run out of application memory" messages – asking me to Force Quit applications. The Mac locks up completely – I can't even force quit any apps, and have to restart the machine!!!!

Thanks for your answer, but why should I do this? Before updating to Sonoma, I don’t need to do anything like that! Before the update, I used it exactly the same way, the same applications were opened and there were no such messages.

were open: WeChat, WhatsApp, telegram, word, Excel, notes, mail, safari with 18-20 tabs) I repeat that before updating MAC OS I never received a message that there was not enough memory. in this case of operation there was very rarely an SSD disk swap, maybe 2-3-5 GB. Only when I additionally opened Photoshop, and also the Liftoff game, the SSD swap was used up to 10 GB or something.

If this is so, I find it strange, I should open two tabs in the browser in one time and two applications, and if I want to open the third tab or app, close the first? This is not a computer from the 2000 year - do like that.

And I repeat, before the update there were no such messages, and the system did not take up such an amount of memory, and there were no messages, and there was no freeze, and there was no need to reboot

martin485 wrote:

It is definitely Sonoma bug, my MBA M1 is unusable since clean install without Time Machine restore.

Well, maybe it is a M1 bug, rather than a Sonoma bug? I don't have any such problems with my MBP 15" Intel with Sonoma.

Mail came with MacOS Sonoma, but I don't use it. I just ran it to check. If I run Mail.app it would take ~50MB.

I don't see any of these memory leaks, either in an Intel MBP or an M1 Max Mac Studio.

There could of course be specific situations that trigger a bug, or there could be other software causes, outside the OS. I see that there is a growing number of complaints about this, here and elsewhere, but this is like a hospital, you should expect to see lots of sick people. But most Sonoma users are not experiencing this, or there would have been an outcry way beyond what we are seeing.